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| A note about the new revised web site: I hate to change our present indexing system, but my time has become
limited over the last four months. Also instead of seeing the list of the latest 10 shows on the index page,
of say, the LIMARC TechNet, all 73's _________________________________________________ Now you can listen to the Technet that best suites your needs! Don't forget to use your player's EQ to taylor the sound! To find a topic: Right now I have the "poor man's way" to search
for topics. In this browser window, go to the Edit Menu I understand this is a very crude way for searching, hey, it's better
than nothing I guess. In the future I will be installing a -Mike |
| 080106tech-001 | 0.00 | N2EO Rich: Need information on aftermarket software for the Kenwood TS-2000? |
| 080106tech-001 | 6.50 | N4PY website and Ham Radio Deluxe good sources for radio control software |
| 080106tech-001 | 11.14 | The latest in software defined radios |
| 080106tech-001 | 14.02 | Software that runs multiple brand name radios |
| 080106tech-001 | 17.10 | Eric: Slim chance for having a standard radio/computer protocol |
| 080106tech-001 | 21.40 | The basics of PayPal |
| 080106tech-001 | 25.35 | KC2MPD Steve: Comparison of coax line loss due to water |
| 080106tech-001 | 34.09 | What is a TDR/TDA (Time Domain Refectometer) How it works and where to buy one |
| 080106tech-001 | 40.35 | What type of coax do you use outside and how long should it last? |
| 080106tech-001 | 44.52 | How do you bring hard line into the house? |
| 080106tech-001 | 47.52 | The myth of connectors and cable loss |
| 080106tech-001 | 50.20 | Precautions when putting up a dipole above your roof. |
| 080106tech-001 | 58.04 | Can a single engine airplane strike a ham antenna? |
| 080106tech-002 | 0.00 | Con't Can a single engine airplane strike a ham antenna? |
| 080106tech-002 | 1.50 | Mel shares what he had to go through to get his tower up in his town |
| 080106tech-002 | 9.33 | KC2OES Fred: N3SVO J-Beam Project discussed |
| 080106tech-002 | 11.49 | Dick: All about resonating, radiating, and phasing |
| 080106tech-002 | 18.03 | Is there an antenna formula for what size material for what wattage? |
| 080106tech-002 | 20.25 | KC2OES Fred: N3SVO J-Beam Project discussed |
| 080106tech-002 | 23.18 | Phase delays in co-linear beam antennas |
| 080106tech-002 | 30.04 | WB5LIA good web site for Kenwood TS2000 software |
| 080106tech-002 | 31.35 | The changing definition of "valid contact" in ham radio |
| 080106tech-002 | 40.08 | Mel: "Straight Key Night" on held on New Year's Eve |
| 080106tech-002 | 42.07 | MEL'S EMAIL 01: How do you improve the B-Point impedance of a Cubical Quad? |
| 080106tech-002 | 49.28 | Dick: Is there a way to knock out the proper size cable hole in a fuse box? |
| 080106tech-002 | 56.55 | MEL'S EMAIL 02: Ham bought a pseudomorphic amplifier- can he salvage it for transistors? |
| 080106tech-003 | 0.00 | Con't MELS' EMAIL 02: Ham bought a pseudomorphic amplifier- can he salvage it for transistors? |
| 080106tech-003 | 5.51 | MEL'S EMAIL 03: How do I shunt feed a ground mounted tower? |
| 080106tech-003 | 18.19 | Mel: QST article "Ground mounted short vertical for 160m" ,website and books by Jerry W2FMI |
| 080106tech-003 | 22.04 | MELS EMAIL 04: What does "transinductive type" mean on a Weston Tubetester? |
| 080106tech-003 | 31.09 | Dick and Mel examine different types of tube testers |
| 080106tech-003 | 35.57 | Dick and Mel look back at drug stores that had tube testers |
| 080106tech-003 | 36.33 | Common early day tube failures |
| 080106tech-003 | 40.37 | Precautions when testing wall sockets |
| 080106tech-003 | 46.16 | New standards in home wall outlet wiring |
| 080106tech-003 | 50.01 | DX cables in home wiring discussed |
| 080106tech-003 | 55.11 | Ham Radio Univ. and its website good source for ham info. Next HRU 1/13/08 Briarcliff College |
| 080106tech-004 | 0.00 | SPACE REPORT WITH WS2N Paul: Spirit's 4th year anniversary this month on Mars |
| 080106tech-004 | 2.40 | ISS rotor repair update |
| 080106tech-004 | 14.30 | The role of water and radiators o the ISS |
| 080106tech-004 | 18.53 | Examining the solar panel rotary joints and motors |
| 080106tech-004 | 26.29 | MELS EMAIL 05: Can you use a computer power supply to run a 100W rig? |
| 080106tech-004 | 32.28 | Mel shares the results of his power supply tests |
| 080106tech-004 | 36.02 | Mel shares how he reengineered a power supply to get twice the current |
| 080106tech-004 | 36.40 | Dec 1999 and Jan 2000 QST article, "Home brewed power supplies" good source on power supplies |
| 080106tech-004 | 38.55 | Mel shares how he reengineered a power supply to get twice the current revisited |
| 080106tech-004 | 51.51 | 1/08 CQ Magazine editorial spotlights both BARA and LIMARC TechNets |
| 080106tech-004 | 53.55 | Can you put power supplies in parallel? |
January 13, 2008 Show
| 080113tech-001 | 3.00 | WC2C Aaron : How does the white EZ Pass box on your windshield work? |
| 080113tech-001 | 3.20 | Dick gives an in depth overview of RF Tags |
| 080113tech-001 | 9.31 | How EZ Pass technology works and its exciting future |
| 080113tech-001 | 17.05 | Scenarios of using RF Tags in business |
| 080113tech-001 | 26.15 | RF Tag use in law enforcement |
| 080113tech-001 | 33.55 | Different types of RF Tag technology |
| 080113tech-001 | 38.36 | KC2LTY Rich: Have faulty MFJ 941 Versatuner- external meter does not match internal meter |
| 080113tech-001 | 47.45 | N2MOD Mike: What are the three things that happen when you transmit? |
| 080113tech-001 | 55.20 | KC2OES Fred: Gives update on his N3SVO J-Beam Project (from 080106-002 9.33) |
| 080113tech-002 | 0.00 | Cont. KC2OES Fred: Gives update on his N3SVO J-Beam Project (from 080106-002 9.33) |
| 080113tech-002 | 6.50 | Spacing of the added element on the J-Beam |
| 080113tech-002 | 9.20 | Why K2OES Fred put angled PVC piping at the bottom of the J-Beam |
| 080113tech-002 | 11.01 | Future possibilities of the J-Beam |
| 080113tech-002 | 14.10 | N2EO Rich: The rising prices of HF Transmitting Tubes and question the present market for them. |
| 080113tech-002 | 25.10 | Dick offers some explanations for the state of the present tube market |
| 080113tech-002 | 31.01 | The present day IMAC Company compared to the old |
| 080113tech-002 | 33.40 | Is it mandatory to buy matched tubes? |
| 080113tech-002 | 43.02 | Living in a "throw-away" society |
| 080113tech-002 | 49.35 | QST Feb 2008 articles to read: Lighting protection, Smith Charts, Sunspot Cycles, Yagis |
| 080113tech-002 | 51.39 | MELS EMAIL 01: Good feedback on last weeks power supply discussion 080106-004 at 32.28 |
| 080113tech-003 | 0.00 | Cont: MELS EMAIL 01: Good feedback on last weeks power supply discussion 080106-004 at 32.28 |
| 080113tech-003 | 2.34 | The satisfaction of building your own equipment |
| 080113tech-003 | 12.21 | MELS EMAIL 02: Do you need a ham license to transmit on bands above 100Ghz? |
| 080113tech-003 | 16.54 | Dick: The human eye as a spectrum analyzer |
| 080113tech-003 | 20.19 | What are quasi-optical techniques? |
| 080113tech-003 | 21.22 | Dick shares his experiments being made above 30Ghz |
| 080113tech-003 | 23.33 | Mel: What is the highest frequency we can reach? |
| 080113tech-003 | 29.05 | You see different things when you look through different wavelengths |
| 080113tech-003 | 31.30 | MELS EMAIL 03: Unknown purpose of a Bertcha tester that doesn't have an antenna input |
| 080113tech-003 | 36.24 | Dick looks back at Mercury Vapor Rectifiers, 811, 807, and 866 tubes |
| 080113tech-003 | 42.02 | Effects when using a Choke Input power supplies |
| 080113tech-003 | 46.57 | Are MVRs on the market today? |
| 080113tech-003 | 49.00 | Where tubes outperform solid state |
| 080113tech-003 | 53.04 | Radiodaze.com excellent source for tubes and components |
| 080113tech-003 | 58.01 | Dick: What generation of radio are we in now? |
| 080113tech-004 | 2.35 | SPACE REPORT W/ WS2N Paul Good Show: History Channel's Universe on Tues. nights |
| 080113tech-004 | 5.10 | Hall Effect and modeling voltage in keyboards |
| 080113tech-004 | 11.47 | Good show PBS's "The Quest for Absolute Zero" Part 1 reviewed |
| 080113tech-004 | 15.52 | Comparing present day prices of antique radio tubes |
| 080113tech-004 | 19.30 | Dick reviews the play he saw "The Farnsworth Experiment" at the Music Box Theatre |
| 080113tech-004 | 22.40 | MELS EMAIL 04: How do you add a Q multiplier to a loop antenna? |
| 080113tech-004 | 26.15 | Mel and Dick look back at the early 807's, Heathkit AR-3 and others |
| 080113tech-004 | 33.04 | The early days of NYC's Canal Street |
| 080113tech-004 | 38.55 | MELS EMAIL 05: Will Halo antennas work well mobile on FM repeaters? |
| 080113tech-004 | 43.40 | MELS EMAIL 06: Looking at Frequency Calibrators |
| 080113tech-004 | 52.10 | Hall effect revisited from 5.10 |
January 20, 2008 Show
| 080120tech-001 | 2.45 | N2EO Rich: How can I get the most drive from my 8877 amp? |
| 080120tech-001 | 9.20 | Setting parameters in a Pi Network |
| 080120tech-001 | 16.12 | Dick: Jan 2008 QST good article on L Networks |
| 080120tech-001 | 19.13 | N2EO Rich had concerns about insertion loss |
| 080120tech-001 | 28.44 | WB2QGZ Bill: The recent HAARP 40m moonbounce |
| 080120tech-001 | 39.24 | WS2N Paul: What type of signals were received from moonbounce? |
| 080120tech-001 | 43.20 | Dick: Doppler Phase vs. Doppler Shift |
| 080120tech-001 | 45.43 | WB2OGZ Bill will try to provide an audio clip of the signals he received form the moonbounce |
| 080120tech-001 | 47.10 | A detail discussion of the types of moonbounce signals |
| 080120tech-001 | 55.56 | K9LTN has photos on the web of his very large antenna array (one of the largest in the world) |
| 080120tech-002 | 0.00 | SPACE REPORT WITH WS2N Paul: Update on the STS-122 connector repair |
| 080120tech-002 | 2.44 | Analysis of STS-122 connector problem |
| 080120tech-002 | 19.45 | The risks of having astronauts make repairs in synchronized orbit i.e. Hubble Telescope |
| 080120tech-002 | 27.22 | Mel looks back at WWII connectors i.e. Bendix |
| 080120tech-002 | 33.42 | Mel: Good response to TechNet's coverage of computer power supplies and the dB discussions |
| 080120tech-002 | 34.55 | MELS EMAIL 01: A ham needs assistance in repairing a National Radio IF transformer |
| 080120tech-002 | 36.10 | Dick and Mel look back at tricky IF repairs they've done |
| 080120tech-002 | 50.00 | Mel's secret way to check if an IF is bad |
| 080120tech-002 | 52.51 | Dick explains how to signal trace with a oscilloscope |
| 080120tech-002 | 56.22 | Dick: The big problem with Network Analyzer DSP screens |
| 080120tech-003 | 0.00 | Cont Dick: The big problem with Network Analyzer DSP screens |
| 080120tech-003 | 5.08 | N2EO Rich: Needs a new CRT for a Simpson 220 Kenwood monitor scope |
| 080120tech-003 | 12.01 | Dick: YouTube has a video of a man who hand makes vacuum tubes |
| 080120tech-003 | 14.45 | KC2QIW Joe: My computer is dead- could it be a faulty power supply? |
| 080120tech-003 | 17.50 | Dick highly praises the HP Spectrum Analyzer built in trouble shorting curcuits |
| 080120tech-003 | 20.15 | Diagnosing power supplies with Mel |
| 080120tech-003 | 21.46 | WA2IGD Charles: The advantage of have a power supply checker (at CompUSA) |
| 080120tech-003 | 26.49 | Dick: A voltmeter is a "must have" for any ham |
| 080120tech-003 | 31.51 | High praise for radiodaze.com for older radio components |
| 080120tech-003 | 32.00 | Examining old oscilloscopes, their features and CRTs |
| 080120tech-003 | 44.35 | WA2CDL Andy: Examining a faulty Arrow Antenna Directional Finding Loop |
| 080120tech-004 | 0.00 | Cont WA2CDL Andy: Examining a faulty Arrow Antenna Directional Finding Loop |
| 080120tech-004 | 6.50 | Examining the Arrow Off-set Attenuator and its Varicap |
| 080120tech-004 | 20.50 | MELS EMAIL 01: Is a 5/8 wave mobile whip that much better than a 1/4 wave mobile? |
| 080120tech-004 | 24.40 | MELS EMAIL 02: How do I get a 1KW rig to work in my car with the proper alternator? |
| 080120tech-004 | 34.10 | Solid state mobile amps examined and look at some mobile solutions |
| 080120tech-004 | 40.19 | The risk of damaging modern car electronics when exposed to RF |
| 080120tech-004 | 43.33 | MELS EMAIL 03: A ham has a device that is marked "SAW" - what is it? |
| 080120tech-004 | 49.10 | Use of filters in pulse compression. |
January 27, 2008 Show
| 080127tech-001 | 2.40 | N2EO Rich: What is the proper mount for a Glen Martin Quadrapod Roof Tower |
| 080127tech-001 | 8.30 | Dick: The importance of understanding wind balancing power |
| 080127tech-001 | 11.40 | WA2CDL Andy: How he installed his Glen Martin Quadrapod Tower |
| 080127tech-001 | 14.00 | Importance to protect the roof shingles and roof structure during installation |
| 080127tech-001 | 15.15 | Dick's success with roof towers |
| 080127tech-001 | 19.40 | WB7ADF Rob: Baluns: do you really need them? |
| 080127tech-001 | 24.18 | Cable TV RFI and its effect on HF performance |
| 080127tech-001 | 28.01 | High Pass Filters to combat TV RFI |
| 080127tech-001 | 30.02 | Dealing with interference with your neighbors |
| 080127tech-001 | 39.49 | In a CW QSO, how can both hams have the exact matching frequencies? |
| 080127tech-001 | 40.39 | Spotting features and side tone tuning in HF rigs |
| 080127tech-001 | 46.41 | Mel explains how his 3-LED CW fine-tuning gadget works (similar to the Timewave 599) |
| 080127tech-001 | 50.01 | How to set the RIT on your rig to fine tune CW |
| 080127tech-001 | 51.30 | N2KJJ Doug: Talks all about HAARP and its transmitting towers |
| 080127tech-001 | 54.10 | Dick explains HAARP moonbounce in detail |
| 080127tech-001 | 57.38 | Dick: How HAARP's large phased array arrangement works |
| 080127tech-002 | 0.00 | Cont Dick: How HAARP's large phased array arrangement works |
| 080127tech-002 | 1.45 | How HAARP "recycles" RF |
| 080127tech-002 | 6.00 | Dipoles are the backbone of HAARP |
| 080127tech-002 | 7.16 | Virtually all antennas are dipole derivatives |
| 080127tech-002 | 9.21 | Choosing between cross coupling and shunt capacitors |
| 080127tech-002 | 15.45 | WA1MBA.org good article on home page Making Perfect Impedance Matching |
| 080127tech-002 | 19.00 | Mel: Do you categorize a loop as a dipole derivative |
| 080127tech-002 | 21.11 | Dick: The magic of resonance and dipoles |
| 080127tech-002 | 25.29 | Dick explains the quiz he gave his colleagues at the Microwave Update Conference |
| 080127tech-002 | 32.10 | Dick explains the expediential decay of a RC Network |
| 080127tech-002 | 38.41 | WJ2B Joe: Impulse response vs. Steady state response |
| 080127tech-002 | 42.50 | What gauge wire can handle 1KW at 80m? |
| 080127tech-002 | 46.30 | Parallel KW amplifiers for 432Mhz and it shielding |
| 080127tech-002 | 53.00 | Dick: Resonance is energy bounding back and forth |
| 080127tech-003 | 0.00 | The new brushless electric model airplane motors Dick saw at N.E.A.T. |
| 080127tech-003 | 2.09 | Mel tells how an updated elevator system is now causing RFI |
| 080127tech-003 | 10.14 | Noise blankers to combat elevator RFI and noise |
| 080127tech-003 | 14.58 | Dick uses Google Earth to try and find Mel's antenna tower |
| 080127tech-003 | 30.06 | Mel: Still getting response from computer power supply discussion 080106-004 at 32.28 |
| 080127tech-003 | 30.45 | MELS EMAIL 01: Ever hear of the Gammatron 254 tube from WWII? |
| 080127tech-003 | 39.15 | MELS EMAIL 02: What is a fractal antenna? |
| 080127tech-003 | 46.10 | Dick explains fractal mathematics |
| 080127tech-003 | 47.10 | Maps.live.com has better resolution satellites photos than Google Earth |
| 080127tech-003 | 51.31 | People who live next to the Empire State Building concerned about RF exposure |
| 080127tech-003 | 53.38 | The transmit power of a car access keychain |
| 080127tech-003 | 58.36 | MELS EMAIL 03: Comparing filtered CW signals to the characteristics of noise. |
| 080127tech-004 | 0.00 | Cont MELS EMAIL 03: Comparing filtered CW signals to the characteristics of noise. |
| 080127tech-004 | 4.02 | Dick gives the definition of noise and KTB |
| 080127tech-004 | 8.17 | CW vs SSB signal to noise ratio comparison |
| 080127tech-004 | 11.46 | Dick still tries to find Mel's house on maps.live.com |
| 080127tech-004 | 17.41 | Elevator RFI and QRM squashers revisited |
| 080127tech-004 | 22.10 | MELS EMAIL 04: What does dBuv stand for? |
| 080127tech-004 | 30.02 | When oscilloscopes used Hard Microvolts and Easy Microvolts |
| 080127tech-004 | 39.15 | MELS EMAIL 05: What is a roofing filter? |
| 080127tech-004 | 43.39 | Examining a Collins Mechanical Filter |
| 080127tech-004 | 46.50 | Mel shares how he tried to enhance a National solid state HRO-500 receiver |
| 080127tech-004 | 51.29 | DSP filters and their shortcomings |
| 080127tech-004 | 54.08 | Each community has different zoning restrictions re: antenna height |
| 080203tech-001 | 1.43 | W2PNJ Paul: Does a wireless mouse interfere with transmitting? |
| 080203tech-001 | 4.31 | N2YJC Lou gives a 27Mhz wireless mouse example and possible 10m interference |
| 080203tech-001 | 12.45 | Blue Tooth technology frequencies |
| 080203tech-001 | 15.09 | The raw data and bandwidth of HDTV |
| 080203tech-001 | 18.50 | All about the analog to digital TV switch over in the US |
| 080203tech-001 | 24.03 | Signal thresholds- Digital vs Analog |
| 080203tech-001 | 27.40 | Advantages of putting up an outdoor antenna for digital TV |
| 080203tech-001 | 29.30 | Multipath HDTV signals and Intelligent antennas |
| 080203tech-001 | 36.15 | Types of TV that are allowed to be sold today |
| 080203tech-001 | 37.50 | KD2BD John: Shares how he uses his ProBrand 3150 digital tuner and his attic antenna for DX |
| 080203tech-001 | 44.02 | A new wave of DTV enthusiasts are coming |
| 080203tech-001 | 49.39 | WB2HWW Howie: How will HDTV will effect the 6m band |
| 080203tech-001 | 56.15 | US broadcast TV vs. European broadcast TV |
| 080203tech-001 | 58.45 | Senior citizen issues regarding discounted TV converter boxes |
| 080203tech-002 | 0.00 | Cont Senior citizen issues regarding discounted TV converter boxes |
| 080203tech-002 | 9.01 | KC2RGW Chris: Is there a way to remotely switch the polarity of an outside antenna? |
| 080203tech-002 | 15.09 | How to hook up a horizontal and vertical Yagi to your rig |
| 080203tech-002 | 22.58 | WB2HWW Howie: suggested using 2 inverted Vs to experiment with Faraday Rotation |
| 080203tech-002 | 29.31 | Dick: The receiver is very forgiving to antenna mismatches |
| 080203tech-002 | 33.50 | How will do TV roof antennas work with ham rigs? |
| 080203tech-002 | 37.50 | wa2mba.org / K2RIW article on bottom of homepage good source for impedance matching |
| 080203tech-002 | 41.50 | Cleaning and using aluminum tubing for ham use |
| 080203tech-002 | 46.15 | logbooks.com good source for waterproof logbooks |
| 080203tech-002 | 47.00 | Can you transmit with a horizontal beam and a vertical beam at the same time? |
| 080203tech-002 | 50.00 | Can you transmit with a 2m horizontal beam and a 2m vertical beam at the same time? |
| 080203tech-002 | 53.07 | N2NEO Rich: Advice on running an amp at half power-load the rig to the max first? |
| 080203tech-003 | 0.00 | Mel explains his Collins amp inductors, finals, and tank circuit |
| 080203tech-003 | 2.40 | The dissipation of tank circuits |
| 080203tech-003 | 7.51 | What is flat topping? |
| 080203tech-003 | 16.59 | The NY Giants win the Super Bowl |
| 080203tech-003 | 21.35 | W2PWJ Bob: Smoke detector problem update from 071014tech-001 47:41 |
| 080203tech-003 | 24.50 | Dick wants to link two fuse boxes together and needs advice |
| 080203tech-003 | 33.34 | Mel made a QSO with a ham he hasn't seen in over 50 years and who knows Dick |
| 080203tech-003 | 42.09 | Mel's indoor loop sparks conversation on 40m |
| 080203tech-003 | 50.41 | Mel's outdoor loop S/N ratio vs. the indoor receiving loop S/N ratio |
| 080203tech-003 | 57.19 | Examining Mel's indoor loop's construction and performance |
| 080203tech-004 | 0.00 | Cont Examining Mel's indoor loop's construction and performance |
| 080203tech-004 | 5.11 | The lack of education regarding dipole antennas |
| 080203tech-004 | 10.01 | The parts of the radiating system |
| 080203tech-004 | 13.10 | MELS EMAIL 01: How do a free a stuck slug from an IF can? |
| 080203tech-004 | 23.52 | Mel shares his collection of radio parts and porcelain rotary shifts |
| 080203tech-004 | 25.59 | Looking back at the Dumont Network, CBS Research Labs, and Bell Labs |
| 080203tech-004 | 30.50 | Looking back a monthly journals from labs |
| 080203tech-004 | 36.51 | Use of the color wheel in DLP television |
| 080203tech-004 | 43.34 | MELS EMAIL 02: How do you measure Q inexpensively? |
February 10, 2008 Show
| 080210tech-001 | 1.09 | N2EO Rich Need wind load advice on putting up a Cubical Quad on a roof tower |
| 080210tech-001 | 3.01 | Discussion on Quad vs. Beam performance and reliability |
| 080210tech-001 | 8.27 | Wayne Overbeck K6YNB article in Ham Radio Mag May 1979 good source on Quads vs. Yagis |
| 080210tech-001 | 24.19 | Cubical Quad wind load considerations |
| 080210tech-001 | 31.50 | The Cubex Cubical Quad antenna wiring construction and gain figures |
| 080210tech-001 | 38.09 | WS2N Paul What happens to coax when it absorbs water? |
| 080210tech-001 | 47.23 | The mechanism that gives water-effected cable its loss |
| 080210tech-001 | 50.24 | The effects of water in ignition wiring |
| 080210tech-001 | 57.30 | KB1BFY Bill: When water got in his Austin Suburban antenna (not the coax) |
| 080210tech-001 | 60.01 | Types of cables that can be sealed from water |
| 080210tech-001 | 63.21 | Water damage to baluns |
| 080210tech-002 | 0.00 | Con't Water damage to baluns |
| 080210tech-002 | 1.11 | N2MPJ Bob Line frequency changes in the United Kingdom vs. the US |
| 080210tech-002 | 3.41 | A primer on home power generators |
| 080210tech-002 | 14.12 | Amateur astronomers are now taking photos/videos of the ISS with a camera and telescope |
| 080210tech-002 | 15.13 | SPACE REPORT with WS2N Paul: ISS's new Columbus module installation |
| 080210tech-002 | 17.57 | History of ISS's modules |
| 080210tech-002 | 26.56 | Telescope mission that detects gamma ray bursts and other future non-man missions |
| 080210tech-002 | 34.28 | MELS EMAIL 01: How do you prevent ice loading on a HF Quad? |
| 080210tech-002 | 46.01 | Wayne Overbeck K6YNB article in Ham Radio Mag May 1979 good source on Quads vs. Yagis, revisited |
| 080210tech-002 | 50.07 | The origins of the Quad antenna |
| 080210tech-002 | 54.19 | MELS EMAIL 02: Please explain a Dielectric Rod Antenna that was used by the military |
| 080210tech-002 | 60.05 | Mel: If you have a longer waveguide, will the gain also be higher? |
| 080210tech-003 | 0.00 | Con't Mel: If you have a longer waveguide, will the gain also be higher? |
| 080210tech-003 | 2.04 | Dick explains Frequency Selective Surfaces |
| 080210tech-003 | 4.01 | The Dielectric Antenna's bandwidth |
| 080210tech-003 | 11.05 | Focal Point Diameter Ratio discussed |
| 080210tech-003 | 14.10 | W1GHZ website good source for 10Ghz information |
| 080210tech-003 | 15.45 | WS2N Paul: Use Google Images and enter "Diagram International Space" for picture of the ISS |
| 080210tech-003 | 23.02 | Dick: How hams homebrewed 10Ghz transmitters |
| 080210tech-003 | 24.58 | Some of Dick's 10Ghz QSOs |
| 080210tech-003 | 29.48 | 10Ghz broadband vs. 10Ghz narrowband techniques |
| 080210tech-003 | 33.15 | MELS EMAIL 03: Please define .25 microvolts @ 10 db S/N ratio |
| 080210tech-003 | 42.07 | Dick: How WA2CDL Andy tests rigs by using microvolts and db S/N ratio |
| 080210tech-003 | 45.53 | MELS EMAIL 04: Please explain what IMD is |
| 080210tech-003 | 49.57 | MELS EMAIL 05: Can I use a 10.7 IF from my FM receiver for ham radio? |
| 080210tech-003 | 52.31 | The best way to charge dry cells |
| 080210tech-003 | 53.50 | What is the proper antenna height for 60m? |
February 17, 2008 Show
| 080217tech-001 | 3.55 | A primer on duplexing filters |
| 080217tech-001 | 11.01 | Duplex filter leakage |
| 080217tech-001 | 14.50 | Older Duplex filter designs |
| 080217tech-001 | 17.33 | Update on the DTV converter boxes for 2009 |
| 080217tech-001 | 21.51 | How DTV converter boxes handle multipath |
| 080217tech-002 | 0.00 | DTV transmission specifications |
| 080217tech-002 | 3.09 | How a DTV equalizer works and bandwidth usage |
| 080217tech-002 | 6.11 | KE2EJ Eric explains the DTV signal path from transmission tower to TV set |
| 080217tech-002 | 14.58 | DTV bandwidth requirements and advances in optical coax |
| 080217tech-002 | 22.20 | hdtv2009.com 888-388-2009 good source for the 2009 DTV conversion |
| 080217tech-002 | 33.11 | Mel gives list of websites for the conversion and against the 2009 conversion |
| 080217tech-002 | 35.01 | WB2HWW Howie: The gov has overlooked people with disabilities who want the converter box |
| 080217tech-002 | 38.30 | SPACE REPORT WITH WS2N Paul: Update on the ISS modules |
| 080217tech-002 | 41.51 | Spy satellite is schedule to be shot down by Navy |
| 080217tech-002 | 54.40 | Examining the spy satellite rocket fuel |
| 080217tech-002 | 56.29 | How the spy satellite will be shot down |
| 080217tech-003 | 0.00 | amateurradio.tv has technets available for streaming/download and each show is indexed |
| 080217tech-003 | 3.15 | Feb. 17, 2009 DTV conversion date is pretty much set in stone |
| 080217tech-003 | 7.31 | Dick: There will be a remaining 50 TV stations that intend to remain on VHF LOW |
| 080217tech-003 | 14.10 | Seniors voice concern over cost and installation of converter boxes |
| 080217tech-003 | 17.54 | Discussion on Clintons balancing the budget by selling off frequencies |
| 080217tech-003 | 20.36 | DTV conversion date revisited |
| 080217tech-003 | 24.49 | Adjacent channel power ratio examined |
| 080217tech-003 | 28.33 | Challenges of putting a tower on top of the Empire State Building |
| 080217tech-003 | 33.56 | Transmitting Power: The Freedom Tower vs. The Empire State Building |
| 080217tech-003 | 33.55 | "Community Antenna" defined |
| 080217tech-003 | 39.00 | The story of the Ch. 6 Russian Music FM Station |
| 080217tech-003 | 44.01 | What outside antenna can you hook up to with the DTV converter box? |
| 080217tech-003 | 48.43 | DTV Dxing: One of the new waves in amateur radio |
| 080217tech-003 | 52.01 | Dick: KD2BD's ProBrand 3150 digital tuner meter works revisited from 080203-001 37.50 |
| 080217tech-003 | 53.50 | Error indication meters vs. Signal Strength meters |
| 080217tech-003 | 57.15 | The Smart Antenna examined |
| 080217tech-004 | 0.00 | KE2EJ gives history of Movie Beam |
| 080217tech-004 | 1.50 | MELS EMAIL 01: Go into deatil regarding Phase-Locked Loops |
| 080217tech-004 | 11.37 | Mel: Book by Rohde & Schwarz is a good source on Phase-Locked Loops |
| 080217tech-004 | 15.02 | Mel lists different terms that are related to Phase-Locked Loops |
| 080217tech-004 | 16.13 | Dick explains Phase Margin, Servo Mechanism and stability |
| 080217tech-004 | 21.04 | Mel gives history of Phase-Locked Loops |
| 080217tech-004 | 33.11 | MELS EMAIL 02: Please discuss the 13-element 432Mhz open quad antenna by I2RR |
| 080217tech-004 | 42.10 | Dick: How to get more bandwidth from a Yagi |
| 080217tech-004 | 58.08 | The Q of the Yagi's parasidic elements |
| 080217tech-005 | 0.00 | Cont The Q of the Yagi's parasitic elements |
| 080217tech-005 | 6.10 | MELS EMAIL 03: Why and where do I place coils on a dipole? |
| 080217tech-005 | 13.17 | What happens when you place a coil at the end of dipole? |
| 080217tech-005 | 16.25 | MELS EMAIL 04: Continue about how Mel modified his Heathkit FB220 (from 070121-001 12.00) |
| 080217tech-005 | 25.50 | Ability to activate a repeater with a dog whistle long ago |
February 24, 2008 Show
| 080224tech-001 | 6.50 | Binoculars-a novice astronomer's best friend |
| 080224tech-001 | 10.43 | NEAF Expo at Rockland C College - a good source for astronomy hardware |
| 080224tech-001 | 11.45 | Discussion on the recent lunar eclipse (numbral and penumbral) |
| 080224tech-001 | 18.30 | Overview of general astronomy and Gamma Ray Astronomy |
| 080224tech-001 | 25.27 | Dick: A Dicky Switched Radiometer is a powerful tool. |
| 080224tech-001 | 34.50 | CQ Magazine March 2008 p34 Story and photos of Dick's Yagi Array |
| 080224tech-001 | 36.00 | Story of finding water damage in Dick's Yagi Array |
| 080224tech-001 | 41.45 | Mel explains the purpose of an ADA device |
| 080224tech-001 | 45.55 | WB2HWW Howie highly recommends LMR400 cable |
| 080224tech-001 | 49.50 | Working with baselines |
| 080224tech-001 | 54.33 | Dick: Our universe has a lot of mysteries |
| 080224tech-001 | 56.33 | Discussion on switches and switch manufacturers |
| 080224tech-001 | 58.40 | Time-Domain Reflectometer and their availability |
| 080224tech-002 | 0.00 | Cont Time-Domain Reflectometer and how to use them |
| 080224tech-002 | 2.11 | Using the Steinhelfer technique |
| 080224tech-002 | 4.10 | More info on Time-Domain Reflectometers (TDRs) revisited |
| 080224tech-002 | 8.15 | Steinhelfer technique revisited |
| 080224tech-002 | 10.01 | KC2QIQ Glen: Horn and dish antenna questions for a 10Ghz station |
| 080224tech-002 | 14.19 | wa1mba web site good info on 10Ghz band antennas has on-line book by W1GHZ) |
| 080224tech-002 | 18.08 | How to make a great waveguide out of a 3/4" water pipe |
| 080224tech-002 | 20.49 | What's required for good waveguide propagation |
| 080224tech-002 | 28.24 | Focusing the polarization of a waveguide |
| 080224tech-002 | 35.25 | Dick explains the Near field range formula |
| 080224tech-002 | 37.21 | Where to find maximum gain out of the dish |
| 080224tech-002 | 55.54 | Modeling a roof metal fence on top of an apartment building as an antenna |
| 080224tech-003 | 0.00 | Cont Modeling a roof metal fence on top of an apartment building as an antenna |
| 080224tech-003 | 8.50 | amateurradio.tv has technets good source for indexed audio segments on loop antennas |
| 080224tech-003 | 12.12 | An example of Faraday Rotation and how a loop antenna takes advantage of it |
| 080224tech-003 | 17.42 | Mel talks about his success with his indoor loop antenna |
| 080224tech-003 | 19.25 | SPACE REPORT W/ WS2n Paul: Update on the Atlantis mission and the ISS modules |
| 080224tech-003 | 23.19 | Overview of the Canada's Dextre Arm System |
| 080224tech-003 | 24.00 | Image on the Canada's Dextre Arm System is at space.gc/ca/asc/img/stdn-hr.jpg |
| 080224tech-003 | 26.58 | Amateur radio equipment projected to be brought up to the ISS |
| 080224tech-003 | 31.40 | Hubble's last repair and the Ulysses mission review |
| 080224tech-003 | 39.23 | KB2YEW Guy: Needs advice on vertical antenna choice for a new General ham |
| 080224tech-003 | 47.49 | How radiation efficiency in antenna documentation could be misleading |
| 080224tech-003 | 55.30 | KB2YEW Guy Explains how he hot glues his wire antenna to his roof shingles |
| 080224tech-003 | 59.10 | KC2MIQ: For maximum ultraviolet protection, use porcelain not plastic |
| 080224tech-004 | 2.32 | MELS EMAIL 01: Listeners would like info on the spy satellite that was taken down |
| 080224tech-004 | 10.20 | Why did the spy satellite has a heat shield? |
| 080224tech-004 | 15.30 | MELS EMAIL 02: You said you put together an inexpensive repeater please elaborate |
| 080224tech-004 | 24.50 | Discussion on the Cross band Repeat Feature on the Yaesu 8100 and Yaesu 8800 |
| 080224tech-004 | 33.20 | MELS EMAIL 03: Go into detail about how you converted your HRO-500 to solid-state |
| 080224tech-004 | 36.45 | Are there any advantages in replacing tubes with solid state modules? |
| 080224tech-004 | 39.50 | N2EO Rich: Suggest Sherwood Engineering and radiodaze.com for info on solid state modules |
| 080302tech-001 | 3.00 | N2EO Rich: Needs to get a new switch for his vintage Collins S-Meter |
| 080302tech-001 | 8.15 | How to restore a Collins S-Meter face plate |
| 080302tech-001 | 13.01 | Early Collins 360 rigs have special radioactive glow meters |
| 080302tech-001 | 15.09 | K2JJ: Bartlett Co. in Ft. Paterson Iowa good source for original Collins S-Meters |
| 080302tech-001 | 16.50 | Precautions to take when working on meters |
| 080302tech-001 | 23.20 | N2EO |
| 080302tech-001 | 27.30 | KC2QIQ Glen: Concerns of insertion phase of his 10GHz transverter |
| 080302tech-001 | 33.30 | Dick: Precautions of using the AGC with regards to spikes |
| 080302tech-001 | 36.35 | Dick describes his tower photo and graphs from this article in CQ Magazine March 2008 |
| 080302tech-001 | 42.40 | Dick: QST August 1972 How does radio signals travel thru the vacuum of space |
| 080302tech-001 | 45.31 | Good antenna receive capture are using Yagis with individual pre-amps |
| 080302tech-001 | 49.58 | Angles of satellite tracking antennas |
| 080302tech-001 | 59.08 | N2EO Rich: needs a suggestion for an external speaker for his Collins 398 |
| 080302tech-002 | 0.00 | Con't N2EO Rich: needs a suggestion for an external speaker for his Collins 398 |
| 080302tech-002 | 1.49 | W2CQT Larry Discussion on the military's repelling 96GHz gun seen on 60 Minutes |
| 080302tech-002 | 9.40 | How water behaves in microwave ovens |
| 080302tech-002 | 15.27 | Testing lead-based utensils, Tupperware and hamburg in microwave ovens |
| 080302tech-002 | 21.25 | The danger of having lead in the human body |
| 080302tech-002 | 23.32 | N2EO Rich: Is the lead in solder dangerous |
| 080302tech-002 | 37.58 | Dangers of breathing smoke plumes from a torch |
| 080302tech-002 | 55.50 | SPACE REPORT W/ WS2N Paul: The launch of Endeavor, The Dextra arm installation and Hubble |
| 080302tech-003 | 0.00 | Cont SPACE REPORT: The launch of Endeavor, The Dextra arm installation and Hubble |
| 080302tech-003 | 5.00 | James Webb Telescope scheduled for 2011 |
| 080302tech-003 | 15.33 | MELS EMAIL 01: How do I determine the ground effects of a Yagi antenna |
| 080302tech-003 | 21.00 | Ionosphere Refraction defined |
| 080302tech-003 | 23.14 | How far can a HF signal travel in one hop? |
| 080302tech-003 | 26.16 | Dick: The "real" thickness of out atmosphere |
| 080302tech-003 | 28.16 | How does the ground plane interact with an antenna while transmitting? |
| 080302tech-003 | 37.10 | Locating the phase center of the real above ground antenna |
| 080302tech-003 | 40.29 | Dick defines an Interferometer |
| 080302tech-003 | 43.20 | Monopulse radar and low angle tracking problems |
| 080302tech-003 | 51.55 | Dick & Mel summarize MELS EMAIL 01: How do I determine the ground effects of a Yagi antenna |
| 080302tech-003 | 54.41 | KC2QIQ Glenn: Shares how his loop performs |
| 080302tech-004 | 0.00 | Cont KC2QIQ Glenn: Shares how his loop performs |
| 080302tech-004 | 4.29 | KC2QIQ Glenn: Tells how his 80m antenna is fed and where the loop dead spots are |
| 080302tech-004 | 7.34 | Mel shares how his outdoor loop performs |
| 080302tech-004 | 11.10 | Mel talks about his friend WW1WW and WW1WW photos on QRZ.com |
| 080302tech-004 | 15.45 | Mel shares that he has to continuously has to adjust his loop and Dick suggests plotting that info |
| 080302tech-004 | 20.49 | Mel describes how his outdoor loop is constructed |
| 080302tech-004 | 24.54 | Having your shack remotely controlled from your home |
| 080302tech-004 | 27.27 | MELS EMAIL 02: Wayne Overbeck's report on Yagis, Quads, and Tri-banders |
| 080302tech-004 | 43.40 | MELS EMAIL 03: Have you heard of the kit called the Folded End Fire Radiator antenna |
March 16, 2008 Show
| 080316tech-001 | 5.29 | The passing of LIMARC'S Lew Reinberg W2BIE |
| 080316tech-001 | 8.20 | KC2XYW Joe: Yaesu FT2800 won't transmit - Joe gives symptoms |
| 080316tech-001 | 5.39 | N2EO Rich: Has a lot of reception problems with his KWM 2A Collins rig |
| 080316tech-001 | 17.45 | Mel suggests examining the rig's mixer, filter, tuning, and its traps |
| 080316tech-001 | 26.45 | N2HWR Vick: Is it worth it to upgrade my Icom IC-91A to D-Star? |
| 080316tech-001 | 29.30 | QST Magazine 2007 (3 issues) Good source for D-Star three consecutive articles |
| 080316tech-001 | 31.40 | K2LJH Sid: Gives overview of the D-Star system |
| 080316tech-001 | 34.14 | D-Star repeaters in the NYC area |
| 080316tech-001 | 38.50 | Vocoder quality of D-Star |
| 080316tech-001 | 44.02 | Complexity of the programming for a D-Star radio |
| 080316tech-001 | 46.10 | Dick: The Microwave Update Conference presentations on software defined radios |
| 080316tech-002 | 0.00 | Cont Dick: The Microwave Update Conference presentations on software defined radios |
| 080316tech-002 | 3.05 | The challenges of having new moonbounce technologies |
| 080316tech-002 | 8.21 | An in depth definition of a QSO contact |
| 080316tech-002 | 11.27 | WA2UMV George: The history of the Automatic Noise Figure Generator |
| 080316tech-002 | 19.23 | Maximum gain vs. noise figure when tuning a pre-amp |
| 080316tech-002 | 27.50 | The manipulated definitions of "Noise Figure" |
| 080316tech-002 | 33.00 | Separating different types of noise using a radiometer |
| 080316tech-002 | 41.06 | WB2HWW Howie: Using tuned circuit cavities and preamps |
| 080316tech-002 | 45.55 | 290 degree Calvin and why it's important |
| 080316tech-002 | 50.38 | Dick: Background of Greenbank WV "The radio quiet zone" |
| 080316tech-002 | 52.40 | Metallic objects and its effects on antenna noise |
| 080316tech-003 | 0.00 | Cont Metallic objects and its effects on antenna noise |
| 080316tech-003 | 3.05 | WA2VMB George: Shares how he used insolated injectors |
| 080316tech-003 | 4.58 | Noise effective bandwidth of the pre-amp |
| 080316tech-003 | 9.29 | Systems that are hard-limited |
| 080316tech-003 | 11.20 | Mel: "Can we put into the design that is equal to the attenuation of the design?" |
| 080316tech-003 | 18.18 | Noise floor and sensitivity |
| 080316tech-003 | 28.06 | Mel and Dick give the definition of minimum detectable signal and minimum acceptable signal |
| 080316tech-003 | 38.55 | SPACE REPORT WITH WS2N PAUL: Endeavor's 15th record flight |
| 080316tech-003 | 45.50 | Space station module building update |
| 080316tech-003 | 48.51 | Orion Space Craft Overview |
| 080316tech-004 | 0.00 | MELS EMAIL 01: Converting a Vertical loop to four (East, West, North, South) |
| 080316tech-004 | 8.10 | Dick: Issues with cross coupling with a vertical loop antenna |
| 080316tech-004 | 11.37 | Mel describes an 8 element 40m delta loop yagi that is on K3LR's website |
| 080316tech-004 | 16.50 | Making effective, properly spaced resonators on a yagi |
| 080316tech-004 | 19.10 | Dick: Articles from Guenther Hoch DL6WU are a good source of Yagi information |
| 080316tech-004 | 27.51 | Dipole Yagis vs. Cubical Quads |
| 080316tech-004 | 29.50 | Close spaced vs. wide spread yagi elements on a boom |
| 080316tech-004 | 32.10 | Dick: Antennas and Propagation Dec 2006 two good articles on end-fed dipoles |
| 080316tech-004 | 43.00 | Dick: "You just don't add onto someone's antenna design" |
| 080316tech-004 | 45.00 | Where the Quad beats the Yagi and where the Yagi beats the Quad |
| 080316tech-004 | 57.38 | Monoband antennas vs. tri-bander antennas |
| 080316tech-004 | 61.45 | The antenna's take-of angle and the number of wavelengths from the ground |
| 080316tech-004 | 64.20 | Mel urges Dick to do a vertical dipole experiment from the top of Dick's tower |
| 080316tech-004 | 66.03 | Dick and Mel discuss Dick's photos that were in CQ Magazine March 2008 |
March 23, 2008 Show
| 080323tech-001 | 2.58 | Where on a dipole do signals rotate? |
| 080323tech-001 | 8.42 | K2TGW Les: 17m Hamstick detunes when it is raised |
| 080323tech-001 | 14.00 | Dick asks for more clarification on Les' Hamstick problem |
| 080323tech-001 | 23.45 | Dick asks for more clarification on Hamstick's radials |
| 080323tech-001 | 26.58 | Dick asks for more clarification on Hamstick's counter poise |
| 080323tech-001 | 28.32 | Dick explains the Action/Reaction Law and how it relates to Les' Hamstick problem |
| 080323tech-001 | 33.35 | Dick defines counter poises and baluns |
| 080323tech-001 | 39.45 | Changing "magical" lengths of coax and the effects on SWR |
| 080323tech-001 | 44.57 | How coax handles forward and reverse power |
| 080323tech-001 | 52.11 | Dick: What a tuner really does and what is a radiating structure |
| 080323tech-001 | 57.39 | What happens to reverse power in the transmission line |
| 080323tech-002 | 2.58 | Tuning pre-amps revisited from 080316tech-002 19:23 |
| 080323tech-002 | 3.45 | WA2RJY Joe: Explains his whole preamp project |
| 080323tech-002 | 8.01 | Dick finds an possible error in Joe's pre-amp project |
| 080323tech-002 | 10.58 | Noise vs. figure peeking of a pre-amp |
| 080323tech-002 | 15.40 | Mel shares how he built a pre-amp with MRF-586 transistors |
| 080323tech-002 | 21.54 | W2MIT Jeff: What is the best way to install a roof tower to make it most secure |
| 080323tech-002 | 26.50 | Antenna wind balance vs. antenna gravity balance |
| 080323tech-002 | 27.50 | Dick: How to make your antenna wind neutral |
| 080323tech-002 | 31.26 | Pre-amp third order output intercept points |
| 080323tech-002 | 37.00 | Dick: A well balanced SWR meter really is a directional coupler |
| 080323tech-002 | 43.54 | K5RMG Road Runners Microwave Group good source on K2RIW article on SWR measurements |
| 080323tech-002 | 51.39 | Why Dick likes his Time Demand Reflectometer |
| 080323tech-002 | 58.03 | What happens when a jumper is added and its effect on SWR |
| 080323tech-003 | 0.00 | Cont What happens when a jumper is added and its effect on SWR |
| 080323tech-003 | 7.43 | Maury Microwave Corp good source for calibration kits |
| 080323tech-003 | 11.40 | Dick: How an HP Ratiometer works |
| 080323tech-003 | 13.38 | How loads may effect results of a calibration kit |
| 080323tech-003 | 21.50 | WS2N Paul: Paul shares a recent 73 rotator problem (pieces falling out) |
| 080323tech-003 | 25.10 | Mel shares his past problems with his rotor bolts |
| 080323tech-003 | 30.50 | Using a heilacoil to fix thread problems |
| 080323tech-003 | 32.11 | SPACE REPORT WITH WS2N Paul: Shuttle's longest mission |
| 080323tech-003 | 35.06 | The orbital boom sensor system, the large Japanese module, the use of fuel cells |
| 080323tech-003 | 42.55 | Recycling in space and the Hubble repair |
| 080323tech-003 | 47.55 | MELS EMAIL 01: Should I have separate Yagis for separate bands or one tri-bander |
| 080323tech-003 | 53.05 | Mel gives high marks for Mosley HF tri-banders |
| 080323tech-004 | 0.00 | Cont Mel gives high marks for Mosley HF tri-banders |
| 080323tech-004 | 3.50 | fordyce.org good source for LI scanner frequencies |
| 080323tech-004 | 8.36 | WB2HWW Howie: Pratt Inst. Shuts down main electronics building |
| 080323tech-004 | 15.25 | MELS EMAIL 02: How do you brace a quad? |
| 080323tech-004 | 20.32 | CQ Magazine's Doug Seymour articles good source on quads |
| 080323tech-004 | 22.57 | How rust ruins towers |
| 080323tech-004 | 23.56 | MELS EMAIL 03: How expensive is the variable capacitor for the 813 80m amplifier |
| 080323tech-004 | 25.03 | Mel and Dick examine the Pico farads of the 813 tube |
| 080323tech-004 | 35.01 | N2EO Rich: Gives advice on securing quads with wire |
| 080323tech-004 | 39.30 | Examining the 811 and 813 tubes |
| 080323tech-004 | 42.30 | KB1RFY Bill: How well made are Ham 4 rotors? |
| 080323tech-004 | 45.35 | MELS EMAIL 04: The proposed dipole experiment first discussed on 080316tech-004 64.20 |
| 080323tech-004 | 53.55 | WB2HWW Howie: Has had great results with slopers |
| 080323tech-004 | 55.00 | Dick: What is the ideal sloping angle? |
March 30, 2008 Show
| 080330tech-001 | 2.51 | N2EO Rich: Has lots of broadcast interference in his Collins S line - any remedies? |
| 080330tech-001 | 6.15 | The importance of shielding to combat RFI |
| 080330tech-001 | 13.09 | The importance of checking the multi-conductor cable and power supply for RFI |
| 080330tech-001 | 20.10 | Mel: Collins Collectors Net on 75m good source for Collins information |
| 080330tech-001 | 25.40 | Comparing locations of NYC area broadcast radio stations |
| 080330tech-001 | 28.15 | Mel: An AC line filter may fix the Collins RFI problem |
| 080330tech-001 | 39.15 | Mel reads reports that RFI may be caused by a Pico farad capacitor |
| 080330tech-001 | 40.30 | Mel reads reports that RFI may be caused by a defective resistor |
| 080330tech-001 | 42.01 | WA2RYY Joe: What is the proper way to measure receiver selectivity |
| 080330tech-001 | 47.40 | Joe gives the selectivity specs of his rig |
| 080330tech-001 | 53.58 | Joe explains how he tested his rig using a signal generator |
| 080330tech-001 | 58.51 | Joe gives specs on the signal generator |
| 080330tech-002 | 0.00 | Con't Joe gives specs on the signal generator |
| 080330tech-002 | 3.31 | Mel and Dick discuss IF filter and transformers in relation to selectivity |
| 080330tech-002 | 10.10 | Dick suggests using a notch filter to reject offending transmitter signals |
| 080330tech-002 | 16.01 | A look at how MetroCor handles offending transmitters |
| 080330tech-002 | 22.50 | WB2HWW Howie: MetroCor regulations on using repeater power supplies |
| 080330tech-002 | 25.40 | Mixing that is caused by fluorescent lights |
| 080330tech-002 | 27.09 | Mel examines power supplies and switching power supplies |
| 080330tech-002 | 30.10 | Mel and Dick praise Manfred Mornhinwig's power supply design |
| 080330tech-002 | 34.35 | The Sony AC adapter for the 2010 is the only adapter you can use with the Sony 2010 |
| 080330tech-002 | 39.30 | Very high praise for the SONY 2010 |
| 080330tech-002 | 49.40 | Dick examines the new Apple notebook computer |
| 080330tech-002 | 52.06 | What was the fire that came out of the shuttle during the last landing? |
| 080330tech-003 | 0.00 | SPACE REPORT WITH WS2N Paul: STS 123 mission complete, and new modules for the ISS |
| 080330tech-003 | 4.40 | STS-125 Hubble service mission discussed |
| 080330tech-003 | 5.39 | Does performance increase when you increase the number of wavelengths to a loop? |
| 080330tech-003 | 7.50 | Status of the James Webb Telescope and the installation of gyros |
| 080330tech-003 | 15.00 | Update on Planetary Finder Telescope Mission |
| 080330tech-003 | 16.51 | Dick: Smithsonian Magazine May/April 2008 good article on black holes |
| 080330tech-003 | 26.29 | Does performance increase when you increase the number of wavelengths to a loop revisited |
| 080330tech-003 | 31.54 | WB2EAV Ed: Explains the "beanbag" theory |
| 080330tech-003 | 37.10 | Where does antenna gain come from? |
| 080330tech-003 | 40.12 | Mel shares how he tests his loops |
| 080330tech-003 | 43.11 | Radiation resistance in loop antenna wire |
| 080330tech-003 | 46.59 | Normalizing with a Network Analyzer |
| 080330tech-004 | 0.00 | Cont Normalizing with a Network Analyzer |
| 080330tech-004 | 6.20 | Plotting impedance with a Vector Network Analyzer |
| 080330tech-004 | 11.26 | How to make a poor man's Vector Network Analyzer by plotting a Smith Chart |
| 080330tech-004 | 20.38 | KC2QIQ Glenn: Shares when he brought his oscilloscope and Spectrum Analyzer to his roof antenna |
| 080330tech-004 | 25.03 | Building terminations on an AEA |
| 080330tech-004 | 32.17 | Mel, Dick, and Glenn study test results from their full wave loop antennas |
| 080330tech-004 | 33.50 | Differential mode vs. parallel mode |
| 080330tech-004 | 40.07 | Mel shares how a ham attached a 1 square foot cage to his loop |
| 080330tech-004 | 44.01 | Mel and Glenn QSO common mode reports given to them by other hams |
| 080330tech-004 | 55.51 | KC2QIQ Glenn: Tells how he uses his MFJ-989D antenna tuner |
| 080406tech-001 | 5.30 | IRLP and Echolink on the LIMARC repeater system |
| 080406tech-001 | 10.20 | Status on Dick and Mels 80m Sloper project on Dick's tower |
| 080406tech-001 | 12.40 | N2MB Barry: Shares his new project that involves two Hustler antennas |
| 080406tech-001 | 13.58 | How Kraus' Infinitessible dipole plays a role in Barry's Hustler project |
| 080406tech-001 | 18.10 | Dealing with coupling co-efficient |
| 080406tech-001 | 24.21 | Mel shares a story of a Kentucky ham that relates to the saying "..is bigger better?" |
| 080406tech-001 | 32.03 | Dick: The magic of Polarimitry |
| 080406tech-001 | 34.19 | Discussion on 2 vertical loops on a boom and rotator |
| 080406tech-001 | 40.40 | The on going debate over the definition of Effective Capture Area |
| 080406tech-001 | 43.49 | How antenna elevation plays a role in Effective Capture Area |
| 080406tech-001 | 47.51 | Dick: The bonus of Pattern Tuning |
| 080406tech-001 | 55.12 | KC2RCG Chris: cebik.com/fdm/atl1.htm good source on multiple loop modeling |
| 080406tech-002 | 0.00 | WA2RYY Joe: Has questions re: an adjacent signal SINAD experiment from 080330tech001 53.58 |
| 080406tech-002 | 5.06 | Dick questions how the SINAD experiment was conducted |
| 080406tech-002 | 7.35 | Dick suggests ways to properly conduct the SINAD experiment |
| 080406tech-002 | 11.32 | Mel suggests manipulating the threshold in the SINAD experiment |
| 080406tech-002 | 16.13 | RF gain and Q multiplies in tube rigs vs. solid state rigs |
| 080406tech-002 | 20.07 | Dick: High marks for the Yaesu FT22IR's front end |
| 080406tech-002 | 22.41 | Precautions using a narrow filter on a spectrum analyzer |
| 080406tech-002 | 26.01 | Review of older well made signal generators |
| 080406tech-002 | 32.55 | Useful features to have in a signal generator |
| 080406tech-002 | 34.09 | High marks for the Hewlett Packard 8640 signal generator |
| 080406tech-002 | 42.08 | Mel: HP tech support not helpful for the HP 8600 series |
| 080406tech-002 | 48.52 | SPACE REPORT WITH WS2N Paul: Viewing the Pleiades stat system |
| 080406tech-002 | 52.45 | Jules Verne module arrives at the ISS and the new Arizona-made telescope |
| 080406tech-002 | 59.00 | Review of CBS's 60 Minutes piece on future Mars missions |
| 080406tech-003 | 0.00 | Examining the mirrors of the binocular telescope |
| 080406tech-003 | 5.15 | Smithsonian Mag April 2008 good article on the Milky way Galaxy's black hole |
| 080406tech-003 | 11.23 | Preview of the angular modulation of FM |
| 080406tech-003 | 17.20 | Different versions of Hewlett Packard signal generators |
| 080406tech-003 | 20.01 | MELS EMAIL 01: Do droopy, old radials hinder antenna performance? |
| 080406tech-003 | 24.21 | MELS EMAIL 02: How do fix problems with switching power supplies? |
| 080406tech-003 | 26.01 | Why Manfred Mornhinwig's power supply works so well (QST Dec 1999 and Jan 2000) |
| 080406tech-003 | 38.03 | KC2QIQ Glenn: Why layout is very important when designing power supply |
| 080406tech-003 | 47.01 | Mel shares a story of examining a heavy power supply at a ham fest |
| 080406tech-003 | 50.31 | Reviews of products form different power supply manufacturers |
| 080406tech-004 | 0.00 | Looking at different Astron and other ham power supply models |
| 080406tech-004 | 14.50 | Controlled leakage reactance in power supplies |
| 080406tech-004 | 18.58 | Over voltage and under voltage power supply protection |
| 080406tech-004 | 19.20 | MELS EMAIL 03: What is the ideal wire and rope to use to make a dipole? |
| 080406tech-004 | 30.13 | Opinions on baluns and types of rope and wires |
| 080406tech-004 | 33.01 | The advantages of using a Multi-band dipole |
| 080406tech-004 | 39.02 | WA2CDL Andy: The Newtronic's motorized and rotatable dipole antenna |
| 080406tech-004 | 54.40 | Professor at Pratt University gives very high praise for the LIMARC TechNet |
April 13, 2008 Show
| 080413tech-001 | 3.50 | What's more popular 2m or 70cm? |
| 080413tech-001 | 9.30 | WB2HWW Howie: Why 70cm is more popular in metro areas? |
| 080413tech-001 | 12.49 | N2EIJ Andrew: Yonkers ARC has a new 224.94 Mhz pl88.5 repeater |
| 080413tech-001 | 16.31 | WS2N Paul: What was the failure of Dick's tower during hurricane Gloria |
| 080413tech-001 | 17.09 | Dick gives history of his 432Mhz SSB use and his antenna array |
| 080413tech-001 | 29.50 | Dick: Higher antenna altitude gives you more signal |
| 080413tech-001 | 32.24 | Dick's future plans with 10Ghz band openings |
| 080413tech-001 | 34.52 | Dick shares the rotator that he uses for his 432Mhz array |
| 080413tech-001 | 37.06 | Dick discovers aircraft reflection |
| 080413tech-001 | 39.54 | How Dick plans to rebuild his 432Mhz array |
| 080413tech-001 | 45.41 | Dick compares strength of different Rohn Towers |
| 080413tech-001 | 52.40 | Dick: A good antenna design is not made by accident |
| 080413tech-001 | 54.55 | Mandatory tower safety precautions and preventable fatal tower accidents |
| 080413tech-002 | 3.28 | How tower cranes are built well and not well within buildings |
| 080413tech-002 | 11.03 | Faulty WTC construction designs |
| 080413tech-002 | 13.29 | WA2RYY Joe: Can a DTV signal off the air be used as a pseudo standard for frequency measurement? |
| 080413tech-002 | 22.18 | WA2RYY Joe: Explain tightening components to a test cable and "magic in the software" |
| 080413tech-002 | 28.50 | Directional couplers in network analyzers |
| 080413tech-002 | 32.43 | Torque wrenches with calibration clicks |
| 080413tech-002 | 36.06 | Misunderstanding regarding connectors and insertion loss |
| 080413tech-002 | 38.50 | KC2SYL Eugene: How can multiple broadcast stations transmit on one antenna? SWR high? |
| 080413tech-002 | 44.52 | The importance of combined band-pass filters |
| 080413tech-002 | 46.01 | K2QT Roger: Building duplex filters |
| 080413tech-002 | 51.30 | Hot and cold loads |
| 080413tech-002 | 56.49 | Dick: All about the IEEE Long Island Consultants network |
| 080413tech-002 | 58.00 | The state of the RF engineering industry |
| 080413tech-003 | 0.00 | Cont The state of the RF engineering industry |
| 080413tech-003 | 2.20 | KC2QIQ Glenn: Please continue with the IEEE Long Island Consultants network |
| 080413tech-003 | 10.40 | KB7ABF Rob: Any opinions on the MIT open course electronic software? |
| 080413tech-003 | 12.52 | Dick: Empirical testing vs modeling software testing |
| 080413tech-003 | 16.25 | KB7ABF Rob: Any opinions on the MIT open course electronic software? Revisited |
| 080413tech-003 | 18.29 | Internet data replacing hard-copy material |
| 080413tech-003 | 27.80 | WA2CDL Andy: 60 Minutes piece on K3TUP's radio wave experiment to kill cancer cells |
| 080413tech-003 | 35.33 | Thermal heating and cancer cells |
| 080413tech-003 | 48.34 | HF RF frequency radiation for the heart |
| 080413tech-003 | 60.05 | MELS EMAIL 01: Please explain again antenna efficiency |
| 080413tech-004 | 0.00 | Cont MELS EMAIL 01: Please explain again antenna efficiency |
| 080413tech-004 | 2.19 | MELS EMAIL 02: Discuss the vertical dipole experiment you conducted |
| 080413tech-004 | 15.04 | SPACE REPORT WS2N Paul: Shuttle bringing up second Japanese module, Phoenix Mission |
| 080413tech-004 | 20.23 | Sawyer missions to the ISS |
| 080413tech-004 | 28.25 | Mel and Dick visit the Berlin Airlift C54 airplane hanger |
| 080413tech-004 | 34.50 | Cont MELS EMAIL 01: Please explain again antenna efficiency |
| 080413tech-004 | 41.33 | Mel gives an example of antenna efficiency and radiation resistance |
| 080413tech-004 | 47.52 | What is the standard signal level that equates to an S9 on HF |
| 080413tech-004 | 49.07 | How does the computer end of Echolink work? |
April 20, 2008 Show
| 080420tech-001 | 4.12 | The three different kinds of groundings |
| 080420tech-001 | 10.02 | Is there a need to ground a symmetrical antenna? |
| 080420tech-001 | 14.01 | Antenna performance above the tree-line vs. below the tree line |
| 080420tech-001 | 18.05 | Feeding and grounding an end fed antenna |
| 080420tech-001 | 22.31 | The real efficiency of a rubber duck antenna |
| 080420tech-001 | 28.12 | Which is better- grounded or ungrounded? |
| 080420tech-001 | 33.21 | Grounding an inverted v antenna and electronic steering |
| 080420tech-001 | 38.09 | What is antenna performance when it is parallel to power lines |
| 080420tech-001 | 41.45 | Misperceptions of using open wire lines |
| 080420tech-001 | 47.45 | Dick does an HT transmit test with W2IGH Hugo |
| 080420tech-002 | 0.00 | Cont Dick does an HT transmit test with W2IGH Hugo |
| 080420tech-002 | 8.02 | How do I fix the error code on a Radio Shack HTX-202? |
| 080420tech-002 | 13.49 | Replacing the lithium battery for the Radio Shack HTX-202 |
| 080420tech-002 | 26.40 | 432 Mhz satellite signal interfered by leaking Cablevision signal |
| 080420tech-002 | 28.56 | All about the Cumulative Leakage Index |
| 080420tech-002 | 33.14 | N2EO Rich shares how the NY Cable Commission got involved with Time Warner over interference |
| 080420tech-002 | 36.41 | Frequencies cable companies use for carrier and the interference they cause |
| 080420tech-002 | 40.10 | When cable customers cause interference |
| 080420tech-002 | 44.03 | N2EO Rich: Trying to match Collins KW-M2 serial number to a production date |
| 080420tech-002 | 46.16 | Background of different Collins equipment and Collins military involvement |
| 080420tech-002 | 57.05 | What does a DTV signal look and sound like on a regular TV set? |
| 080420tech-003 | 0.00 | Cont What does a DTV signal look and sound like on a regular TV set? |
| 080420tech-003 | 3.30 | The future use of TV channels 2 through 13 |
| 080420tech-003 | 7.12 | K2KEY Mel: Digital only outside TV antenna scam |
| 080420tech-003 | 10.29 | New NYC DTV channel allocations |
| 080420tech-003 | 17.10 | KB2BD John: The range of normal DTV signals |
| 080420tech-003 | 25.25 | KB2BD John shares specs and features of his Proband DTV receiver |
| 080420tech-003 | 29.40 | Standard DTV vs. HDTV |
| 080420tech-003 | 36.10 | Does changing coax change DTV quality? |
| 080420tech-003 | 41.05 | Measuring remodulating analog TV quality vs DTV quality |
| 080420tech-003 | 50.01 | Observing DTV frequency tolerance on a spectrum analyzer |
| 080420tech-004 | 0.00 | Con't Observing DTV frequency tolerance on a spectrum analyzer |
| 080420tech-004 | 2.30 | The accuracy of a hertz |
| 080420tech-004 | 5.50 | Qualcomm's new K-Band 10Ghz oscillator Omnitrack receiver |
| 080420tech-004 | 11.29 | MELS EMAIL 01: What is a proper wire size to bury as radial? |
| 080420tech-004 | 16.07 | Mel explains why he uses 100 ground radials |
| 080420tech-004 | 23.36 | Mel's use of pulleys, antennas, and welding rigs |
| 080420tech-004 | 30.15 | Sea water spray and it effect on galvanized metal |
| 080420tech-004 | 35.45 | MELS EMAIL 02: Making a spectrum display using a TV set for 6m band opening detection |
| 080420tech-004 | 52.21 | KC2SYL Bill: How do you sign onto Echolink? |
April 27, 2008 Show
| 080427tech-001 | 4.05 | WA2CDL Andy: The passing of L.B. Cebik W4RNL |
| 080427tech-001 | 7.35 | N4NLB Mike: Needs help with an SWR meter for his Hustler array on his 18 wheeler |
| 080427tech-001 | 24.40 | W2TTT Gordon: Thanks Dick for participating on the April 24, 2008 BARA TechNet |
| 080427tech-001 | 26.49 | Dick repeats the quiz he gave on the April 24, 2008 BARA TechNet |
| 080427tech-001 | 29.14 | KA2EG Eric: Update on the NAB Convention, new DTV boxes, and active antenna regulations |
| 080427tech-001 | 36.12 | Dick explains the Widrow Algorithm |
| 080427tech-001 | 37.22 | Delay time in relation to multipath signals |
| 080427tech-001 | 42.48 | 8th generation DTV boxes examined |
| 080427tech-001 | 44.37 | Impulse noise vs. DTV signals |
| 080427tech-001 | 49.16 | Where to buy DTV converter boxes |
| 080427tech-001 | 54.42 | N2EO Rich: Needs information on getting Millen tube sockets |
| 080427tech-002 | 0.00 | Cont N2EO Rich: Needs information on getting Millen tube sockets |
| 080427tech-002 | 1.40 | 8th generation DTV boxes examined revisited |
| 080427tech-002 | 4.52 | WA2RYY Joe shared his frequency measurement results done with this service monitor |
| 080427tech-002 | 11.45 | WA1MBA.org good source for frequency accuracy data for 10Ghz |
| 080427tech-002 | 16.45 | Mel: What is the frequency accuracy maintained for radio navigation in aircraft |
| 080427tech-002 | 18.41 | Frequency accuracy of broadcast TV and DTV carrier signals |
| 080427tech-002 | 29.17 | Dick shares a practical joke that was played at his workplace years ago |
| 080427tech-002 | 32.16 | The accuracy of GPS oscillators and the subject of time correction |
| 080427tech-002 | 38.12 | WA2RYY Joe shared his frequency measurement results done with this service monitor revisited |
| 080427tech-002 | 41.33 | KF2GB Jack: How high does a 20m antenna have to be to be efficient? |
| 080427tech-002 | 46.45 | KF2GB Jack: Does a 90 foot high 20m antenna out perform a 60 foot high 20m antenna? |
| 080427tech-002 | 51.29 | Mel shares what experts say about optimal 20m antenna height |
| 080427tech-003 | 0.00 | KF2GB Jack: Is there any performance difference transmitting at 5K, 10K, or 15K feet in a airplane? |
| 080427tech-003 | 2.19 | Examining antenna elevation and take off angles when in a airplane at 20K feet |
| 080427tech-003 | 16.30 | Defining in-core and outer-core |
| 080427tech-003 | 17.52 | The effect on society when the DTV switchover date arrives |
| 080427tech-003 | 19.21 | Heat sinks and covering them with black and white paint |
| 080427tech-003 | 36.34 | Improvements in DTV converter boxes searching for signals |
| 080427tech-003 | 46.10 | The contents of a DTV data stream |
| 080427tech-003 | 57.58 | MEL EMAIL 01: Radials- why are they so important? |
| 080427tech-004 | 0.00 | Cont MEL EMAIL 01: Radials- why are they so important? |
| 080427tech-004 | 1.10 | The difference between VHF/UHF radials and HF radials |
| 080427tech-004 | 5.01 | The confusing information of vertical antennas' use of radials |
| 080427tech-004 | 13.35 | Different antenna wavelengths and its related resistive component |
| 080427tech-004 | 21.31 | Mel: Still thinks horizontal dipoles work better than verticals |
| 080427tech-004 | 26.25 | Ground gain explained |
| 080427tech-004 | 27.07 | Scenarios of running and not running as many radials |
| 080427tech-004 | 33.15 | Examining performance of End Zepp antennas |
| 080427tech-004 | 43.25 | MELS EMAIL 02: Why do I get high SWR readings on some of bands using my G5RV? |
| 080427tech-004 | 54.25 | MELS EMAIL 03: Should I buy an antenna or make my own? |
| 080504tech-001 | 0.00 | (Already in progress) Different Arecibo radar techniques |
| 080504tech-001 | 2.31 | radiodaze.com, ramsey electronics, and sciencefirst.com good sources for electronic kits |
| 080504tech-001 | 7.05 | Arecibo radar techniques revisited |
| 080504tech-001 | 21.41 | K1JT Joe Taylor vector demodulator techniques |
| 080504tech-001 | 24.50 | The history of the Labembaum (sp?) parametric amplifiers |
| 080504tech-001 | 32.50 | The makings of a GPS receiver signal |
| 080504tech-001 | 36.51 | How the Arecibo dish utilizes the time shifting technique |
| 080504tech-001 | 42.39 | KC2OES Fred: Connecting wires of a Turner microphone to a Yeasu FT920 |
| 080504tech-001 | 54.02 | Microphones with double ground wiring |
| 080504tech-001 | 56.37 | WA2RYY Joe: RFI from a radio charger in his house |
| 080504tech-002 | 0.00 | Cont WA2RYY Joe: RFI from a radio charger in his house |
| 080504tech-002 | 2.51 | Mel: building a poor mans shield to combat wall wart interference |
| 080504tech-002 | 5.01 | WA2RYY Joe: Some more results of over the air signals frequency standards revisited |
| 080504tech-002 | 10.58 | Dick: The fun of searching for accuracy i.e.. Watches |
| 080504tech-002 | 12.09 | The need for extreme accuracy in aircraft transportation |
| 080504tech-002 | 14.22 | WA2RYY Joe: Discusses his off the air signal results with KE2EJ Eric |
| 080504tech-002 | 24.30 | Dick compares Joe's and Eric's frequency results from last week's TechNet |
| 080504tech-002 | 31.10 | Eugene has two DTV converter box certificates free of charge |
| 080504tech-002 | 33.48 | Cont Dick compares Joes and Eric's frequency results from last week's TechNet |
| 080504tech-002 | 36.41 | All about the history of time-base correctors |
| 080504tech-002 | 42.30 | SPACE REPORT WS2N Paul: Update on the Phoenix Space Craft landing on Mars |
| 080504tech-002 | 45.01 | New ISS space station lab and other modules |
| 080504tech-002 | 50.04 | Lunar Recognizance Orbiter polar ice mission |
| 080504tech-003 | 0.00 | When is the next manned mission to the moon? |
| 080504tech-003 | 3.02 | Comparing The Orion to the Space Shuttle |
| 080504tech-003 | 10.05 | MELS EMAIL 01: How to you put radials under your lawn? |
| 080504tech-003 | 22.18 | MELS EMAIL 02: A primer on ground plane ground screens |
| 080504tech-003 | 28.55 | The 5 Ohm goal of ground loss resistance |
| 080504tech-003 | 31.07 | Why antenna manufacturers refuse to mention the needed radials in their ads |
| 080504tech-003 | 35.10 | Story of a ham that drags a wire out the back of his car for 160m mobile work |
| 080504tech-003 | 41.59 | MELS EMAIL 03: Microwave oven suddenly causes RFI- what could be the cause? |
| 080504tech-003 | 48.52 | Examining the parts of a microwave oven |
| 080504tech-003 | 57.46 | Is it possible to measure the lead content of a coffee cup using a microwave oven? |
| 080504tech-004 | 0.00 | Cont is it possible to measure the lead content of a coffee cup using a microwave oven? |
| 080504tech-004 | 2.21 | MELS EMAIL 04: How can you determine amplifier power by using the unit's PEP information? |
| 080504tech-004 | 9.31 | Why you can't use a bird watt meter to measure PEP |
| 080504tech-004 | 15.34 | Mel examines SSB specs in a rig advertisement |
| 080504tech-004 | 19.02 | Why the Kenwood 450 and the Kenwood 850 are so popular |
| 080504tech-004 | 22.39 | MELS EMAIL 06: Will an azimuth elevation rotator for a 6m beam do well also on 10m? |
| 080504tech-004 | 27.03 | Examining image, angle of elevation and gain |
| 080504tech-004 | 38.55 | MELS EMAIL 07: What is Greyline? |
| 080504tech-004 | 46.37 | How different times of a 24 hour period effects Greyline and radio signal performance |
May 11, 2008 Show
| 080511tech-001 | 2.20 | K2LDK Sam: Trying to wind Toroidal transformer to change phase-needs advice |
| 080511tech-001 | 8.24 | Mel explains the way of winding Toroidal transformers |
| 080511tech-001 | 13.13 | Precautions when impedance matching MOSFET circuits |
| 080511tech-001 | 16.33 | The "Starts and Finishes" of transformers |
| 080511tech-001 | 23.02 | Driving 80m MOSFET amplifiers |
| 080511tech-001 | 29.03 | K2KYQ Joe: Recharging different milliamp related batteries |
| 080511tech-001 | 34.39 | How smart chargers operate |
| 080511tech-001 | 39.01 | Drawbacks when parallel charging batteries |
| 080511tech-001 | 43.25 | How to properly recharge batteries |
| 080511tech-001 | 51.26 | What ".1c rate" means |
| 080511tech-001 | 53.38 | A look at recharging cell phone batteries |
| 080511tech-001 | 57.01 | How Nickel Cadmium and Lithium Ion batteries behave while recharging |
| 080511tech-002 | 0.00 | Con't How Nickel Cadmium and Lithium Ion batteries behave while recharging |
| 080511tech-002 | 4.00 | K2YO Bernie: Nortel phone system causing RFI on 2m. |
| 080511tech-002 | 10.35 | Using the Microvolt is the best standard to measure EMI |
| 080511tech-002 | 18.30 | The signal result when shielding a hot cable |
| 080511tech-002 | 19.49 | N2EO Rich: 6140, 6146A, 6146B, and 6293 output tubes and uses in Collins rigs |
| 080511tech-002 | 23.38 | Plate and grid circuits and the making of a neutralization network |
| 080511tech-002 | 28.47 | "Beefing up" a port circuit to change the Cgp |
| 080511tech-002 | 32.34 | W2EWK Eugene: Is it better to transmit from the ocean coast or at top of a mountain? |
| 080511tech-002 | 34.21 | Mel shares his opinion of HF mobile by the ocean's shore |
| 080511tech-002 | 43.18 | W2EWK Eugene: Some emergencies that happened on Apollo 11. |
| 080511tech-002 | 45.54 | SPACE REPORT w/ WS2N Paul: Landing date is May 25 for the Phoenix craft on Mars |
| 080511tech-002 | 47.11 | The construction of the Chilean ESO VLT |
| 080511tech-002 | 52.05 | Ground based telescopes vs. the Hubble Telescope |
| 080511tech-002 | 57.02 | Today's construction of telescope glass lenses |
| 080511tech-002 | 59.38 | photronics.com good info re: the Phoenix lens technology from Long Island |
| 080511tech-003 | 0.00 | Construction of the mirrors of the Chilean ESO VLT |
| 080511tech-003 | 4.55 | Integration of astro photographs of Haley's Comet |
| 080511tech-003 | 10.23 | Optical telescopes vs. Radio telescopes |
| 080511tech-003 | 14.23 | Smaller radio dish owners join forces for SETI research |
| 080511tech-003 | 18.40 | All about Paul Shuch and his waterhole hole astronomy song |
| 080511tech-003 | 24.05 | N2NYW Ed: Is the Drake equation now being discounted? |
| 080511tech-003 | 29.47 | Metro area astronomers deal with lots of light pollution to see the stars |
| 080511tech-003 | 32.10 | The Humbling of Mankind |
| 080511tech-003 | 35.19 | What type of signal would we receive from another world? |
| 080511tech-003 | 38.06 | Dick: Each element has a frequency |
| 080511tech-003 | 40.23 | Dick explains the Stanley Miller Experiment |
| 080511tech-003 | 41.41 | Do aliens communicate with "Binary Antenna Polarization?" |
| 080511tech-003 | 54.12 | The sun is the future for unlimited energy |
| 080511tech-003 | 58.30 | MELS EMAIL 01: What is a Bruce Array? |
| 080511tech-004 | 0.00 | Con't MELS EMAIL 01: What is a Bruce Array? |
| 080511tech-004 | 0.50 | Dick explains the Chu-Wheeler Criteria |
| 080511tech-004 | 3.40 | Mel explains the Bobtail Curtain Antenna |
| 080511tech-004 | 9.20 | MELS EMAIL 02: What do you use to measure inductance and capacitance? |
| 080511tech-004 | 17.01 | Using a grid dip meter to measure inductance and capacitance |
| 080511tech-004 | 17.49 | The very first radio telescope measurement made? |
| 080511tech-004 | 18.40 | WBJI.com good pictures of a Bruce Array |
| 080511tech-004 | 26.52 | MELS EMAIL 03: What is a Terminated Traveling Wave Antenna? |
| 080511tech-004 | 32.30 | The purpose of a Time Domain Reflectometer? |
| 080511tech-004 | 45.55 | More about Paul Shuch N6TX and his professional background on his website |
| 080511tech-004 | 47.30 | Uses of a Rubidium Frequency Oscillator |
| 080511tech-004 | 58.21 | The accuracy of the National Bureau of Standards |
May 18, 2008 Show
| 080518tech-001 | 3.36 | N2EO Rich: How do you protect the sensitive input o a B&K frequency counter? |
| 080518tech-001 | 6.39 | Advantages of connecting a frequency counter to a waveform monitor |
| 080518tech-001 | 16.03 | HP scope specs vs. Tektronix scope specs |
| 080518tech-001 | 20.00 | What does the function "RPM" mean on a B&K frequency counter? |
| 080518tech-001 | 23.21 | alliedelectronics.com good source for B&K frequency counters |
| 080518tech-001 | 27.12 | KC2OJO Howie: Comparing rigs from Elecraft, TenTec, and Flexradio for possible bandscope use. |
| 080518tech-001 | 32.58 | Comparing the ICOM 756 Pro III active scope and the new Yaesu 950. |
| 080518tech-001 | 36.15 | K2TGW Len Talks about the ICOM 746's bandscope |
| 080518tech-001 | 39.01 | Mel: The value of using a bandscope |
| 080518tech-001 | 44.37 | Adding a bandscope to an older radio such as a Collins rig |
| 080518tech-001 | 46.38 | Precautions when replacing a rig's coil when adding a bandscope |
| 080518tech-001 | 52.51 | Mel: Did anyone go to Dayton Hamfest this year? The gasoline dilemma |
| 080518tech-002 | 0.00 | Cont Mel: Did anyone go to Dayton Hamfest this year? The gasoline dilemma |
| 080518tech-002 | 0.55 | KO2OK Ben: Needs cabinet suggestion for his homebrewed 6m amplifier |
| 080518tech-002 | 1.31 | Mel shares all the ways he gets cabinet material |
| 080518tech-002 | 7.18 | N2EO Rich: tubesandmore.com, and Hatco electronics in LI good sources for enclosures |
| 080518tech-002 | 11.51 | KE2EJ Eric: Panels 123, MCM Electronics also good sources for enclosure material |
| 080518tech-002 | 15.53 | Onlinemetals.com, local machine shops and Grainger also good sources for enclosure material |
| 080518tech-002 | 20.02 | KO2OK Ben: Goes into detail about his 6m amplifier |
| 080518tech-002 | 29.56 | K2OES Fred: Needs a Channel Master rotator remote control replacement |
| 080518tech-002 | 35.07 | Examining the remote and receiver codes of a Channel Master |
| 080518tech-002 | 39.07 | Examining the code that comes from a remote on an oscilloscope |
| 080518tech-002 | 41.35 | Dick gives a full summary of K2OES Fred's Channel Master remote code problem |
| 080518tech-002 | 44.10 | Eric, Dick, and Fred study the header of the Channel Master code problem |
| 080518tech-003 | 0.00 | Cont Eric, Dick, and Fred study the header of the Channel Master code problem |
| 080518tech-003 | 9.07 | Polarizing the remora signal of a Channel Master |
| 080518tech-003 | 18.38 | Discussion on alternative sources for polarizing a Channel Master signal |
| 080518tech-003 | 24.10 | Polarization using 3D movie glasses and sunglasses |
| 080518tech-003 | 28.37 | Polarization.com good source for polarization information |
| 080518tech-003 | 32.17 | Dick explains how he tried to photocopy his HP calculator display |
| 080518tech-003 | 37.05 | What is a Lenticular Screen in a projection TV set? |
| 080518tech-003 | 42.46 | Different pixel sizes on LCD screens |
| 080518tech-003 | 46.17 | Quality of LCD and Plasma displays used in the TV industry |
| 080518tech-003 | 50.50 | Replacing the illuminator bulb for a LCD screen |
| 080518tech-003 | 59.31 | How an LCD screen gives you red, green, and blue |
| 080518tech-004 | 0.00 | Cont How an LCD screen gives you red, green, and blue |
| 080518tech-004 | 10.39 | Eric dissects a pixel |
| 080518tech-004 | 19.25 | MELS EMAIL 01: Can I use my existing 40m ground radials on 20m? |
| 080518tech-004 | 28.13 | Dick: Is retuning required when using 40m radials when on 80m or 20m? |
| 080518tech-004 | 30.18 | How Mel set up his antenna system for Dxing on the low bands |
| 080518tech-004 | 35.50 | How Mel utilized window screens for his antenna system |
| 080518tech-004 | 38.27 | Mel shares his recent DX CW QSOs and how he logs them |
| 080518tech-004 | 45.17 | Overview and the importance of Resistance and Reaction charts by Wheeler |
| 080518tech-004 | 54.10 | WA1MBA.com with K2RIW front page article good source on impedance matching |
| 080518tech-004 | 58.55 | N2RSO Frank: Trying to make an off-center fed type dipole broadband. |
May 25, 2008 Show
| 080525tech-001 | 3.34 | WB2CUK Bill: Do the Mars rover's have satellites around Mars to communicate with Earth? |
| 080525tech-001 | 4.10 | All about the signal that comes from the rovers' satellites |
| 080525tech-001 | 9.43 | Phoenix lens coating manufactured by company in Long Island |
| 080525tech-001 | 12.06 | How to receive the 8.8 Ghz signal from Mars |
| 080525tech-001 | 13.41 | Phoenix's "9 minutes of hell" explained |
| 080525tech-001 | 18.13 | WS2N Paul explains the Phoenix landing in detail |
| 080525tech-001 | 22.01 | What samples Phoenix will test from Mar's surface |
| 080525tech-001 | 32.02 | How Phoenix's solar panels will have to strong to handle Mar's winds |
| 080525tech-001 | 35.08 | WB2RYY Joe: Explain measuring insertion loss on a transmission line vs. return loss |
| 080525tech-001 | 40.55 | Scenario: Bend in cable or water in cable and measuring the return loss |
| 080525tech-001 | 51.58 | Mel: What I see if I attach a TDR (time-domain reflectometer) to a cable holding water |
| 080525tech-001 | 57.28 | Mel: Cable systems that use F connectors-how do they get away with it? |
| 080525tech-002 | 0.00 | K1NET Steve: (on oil tanker) shares how much his tanker carries |
| 080525tech-002 | 3.50 | Dick: US too dependant on Mid East Oil |
| 080525tech-002 | 6.29 | SPACE REPORT with WS2N Paul: Japanese module for ISS soon to launch |
| 080525tech-002 | 12.02 | Examining the NASA Select Channel |
| 080525tech-002 | 17.12 | MELS EMAIL 01: How much current is need to electrocute a human? |
| 080525tech-002 | 22.14 | What is more dangerous 60hz or 50hz? |
| 080525tech-002 | 25.51 | Is low voltage safe- why or why not? |
| 080525tech-002 | 27.08 | Dick and Mel give life threatening electricity scenarios |
| 080525tech-002 | 35.27 | Dick: Isolation transformers are not a guarantee for safety |
| 080525tech-002 | 37.54 | KC2QIW Joe: Will a European 50hz turntable work in the US? |
| 080525tech-002 | 45.55 | Electricity precautions in the bathroom and kitchen |
| 080525tech-002 | 47.28 | Why did Europe choose 50hz rather than 60hz like the US? |
| 080525tech-002 | 54.56 | Comparing US standard units to English standard units |
| 080525tech-003 | 0.00 | Cont Comparing US standard units to English standard units |
| 080525tech-003 | 3.42 | Examining the Pascal unit. |
| 080525tech-003 | 6.04 | MELS EMAIL 02: Can I use my 40m vertical on 20m? |
| 080525tech-003 | 12.32 | Mel and Dick examine the Newton unit. |
| 080525tech-003 | 18.29 | Discussion on the efficiency of Mel's loop antenna vs his ground vertical |
| 080525tech-003 | 21.15 | Mel and Dick examine the Newton unit revisited |
| 080525tech-003 | 30.04 | WA2CDL Andy and WA2RYY Joe recap the recent Blue Angels air show |
| 080525tech-003 | 44.56 | WB2EAB Ed shares his involvement in the aviation industry |
| 080525tech-003 | 56.58 | Discussion on the efficiency of Mel's loop antenna vs his ground vertical revisited |
| 080525tech-004 | 0.00 | Con't Discussion on the efficiency of Mel's loop antenna vs his ground vertical revisited |
| 080525tech-004 | 2.39 | Comparing horizontal noise to vertical noise |
| 080525tech-004 | 4.31 | KC2QIQ Glen: shares spectrum analyzer results when changing a vertical to a horizontal antenna |
| 080525tech-004 | 8.25 | Mel shares his results when testing vertical to horizontal antennas |
| 080525tech-004 | 10.47 | Mel shares his results when testing his 80m antenna |
| 080525tech-004 | 18.05 | Mel and Dick discuss an engine that is at Floyd Bennett Field |
| 080525tech-004 | 21.00 | Mel and discuss the legendary SR-71, EA6 and other military aircraft |
| 080525tech-004 | 41.13 | MELS EMAIL 03: Is Manfred Mornhinwig's power supply available for purchase? |
| 080525tech-004 | 49.27 | MELS EMAIL 04: How do I test power amplifier tubes without using a rig? |
| 080525tech-004 | 52.29 | Mel explains Tran inductance Testing |
| 080601tech-001 | 3.15 | K2YO Bernie: How critical is the length of ground plain radials? |
| 080601tech-001 | 10.30 | The mystery of measuring antenna efficiency |
| 080601tech-001 | 13.17 | When your coax cable becomes part of your antenna |
| 080601tech-001 | 20.11 | What's better to use as a ground plane - screen or metal? |
| 080601tech-001 | 26.31 | The benefits of end feeding an antenna |
| 080601tech-001 | 31.41 | Building inexpensive wire antennas |
| 080601tech-001 | 35.34 | Mel explains his multiple antenna setup and their individual performance |
| 080601tech-001 | 43.33 | WB2HWW Howie: How to build a $4 antenna |
| 080601tech-001 | 44.31 | Why is a pure vertical dipole not as effective as a slightly off vertical dipole? |
| 080601tech-001 | 48.15 | KC2QIQ Glenn: Explain the 20" metal bicycle rim antenna he made |
| 080601tech-001 | 52.00 | Mel: Shares how his adjustable Sloper is extremely effective |
| 080601tech-002 | 0.00 | How objects next to the antenna's effective area effect performance. |
| 080601tech-002 | 5.05 | Do antenna patterns change when you move apart a closely positioned Yagi and Channel Master? |
| 080601tech-002 | 12.30 | Dick suggests using a notch filter for the Yagi and Channel Master |
| 080601tech-002 | 15.02 | WA2RYY Joe: Elaborate on the 10Mhz coax water absorption on 70cm/2M discussion from last week? |
| 080601tech-002 | 23.10 | Mel: Does the heat of the sun dry out the moisture inside the cable? |
| 080601tech-002 | 26.35 | 9913 vs. 9914 cable |
| 080601tech-002 | 29.30 | WA2RYY Joe: Why is the hydrogen tank above the oxygen tank on the shuttle rocket? |
| 080601tech-002 | 31.36 | Can you dry out water in the coax to regain the insertion loss? |
| 080601tech-002 | 38.41 | KC2MDP Bill: Can I connect 2 scanners to one antenna with any performance loss? |
| 080601tech-002 | 43.40 | What happens when you connect one scanner to multiple antennas? |
| 080601tech-002 | 47.39 | Andrew coax vs. Times Microwave coax |
| 080601tech-002 | 53.22 | Window sealant and certain tape are very effective for weather proofing coax |
| 080601tech-003 | 0.00 | Cont Window sealant and certain tape are very effective for weather proofing coax |
| 080601tech-003 | 2.02 | Mel: Telephone company use of very effective heat shrinkable wrap to seal connectors |
| 080601tech-003 | 7.50 | W2MKV Mitch: Suggests using clear PVC and clear silicone to seal a connector |
| 080601tech-003 | 10.30 | N2HVR Nick: Can I use Flexplus cable? |
| 080601tech-003 | 14.04 | Dick explains Stinger connectors |
| 080601tech-003 | 15.29 | N2SRU Frank: Bathroom caulking and a straw was used to make a Western Union splice |
| 080601tech-003 | 21.33 | KC2QIQ Glenn: Explains a faulty CATV cable that ran in then out then in again to his house |
| 080601tech-003 | 26.43 | Dick explains the Cumulative Leaking Index (CLI) |
| 080601tech-003 | 29.39 | WB2HWW Howie: Suggests using Scotchcoat for cable UV protection |
| 080601tech-003 | 31.33 | MELS EMAIL 01: Is it true that a beverage antenna is not a good performer near seawater? |
| 080601tech-003 | 39.12 | W2VUV Bob: Give details of the antenna station at Rocky Point |
| 080601tech-003 | 42.55 | KC2QIQ Glenn: Shares his results when using a beverage at the beach |
| 080601tech-003 | 43.40 | Discussion and DX Expedition opinion on beverage antennas |
| 080601tech-003 | 53.00 | N2RSU Frank: Franks shares a story of N9ZRT who made a beverage using a railroad spur |
| 080601tech-003 | 58.36 | MELS EMAIL 02: What is optimum elevation and take off angle? |
| 080601tech-004 | 0.00 | Con't MELS EMAIL 02: What is optimum elevation and take off angle? |
| 080601tech-004 | 5.15 | Mel: Several antennas may be needed on 80m for different situations |
| 080601tech-004 | 8.10 | Dick: Very much against putting egg insulators on guy wires |
| 080601tech-004 | 9.18 | Ways to tune your guywire for resonance |
| 080601tech-004 | 18.11 | Dick: Dick: Very much against putting egg insulators on guy wires revisited |
| 080601tech-004 | 21.51 | Mel: Mosley said their antenna will suffer if the guy wires are not egg insulated |
| 080601tech-004 | 23.16 | Dick disagrees with Mosley guy wire statement |
| 080601tech-004 | 37.00 | N2NNU Alex: Highly recommends Walter Maxwell's (W2DU) book "Reflections" |
| 080601tech-004 | 47.01 | Mel: Mosley said their antenna will suffer if the guy wires are not egg insulated revisited |
| 080601tech-004 | 49.15 | Mel shares concerns over how to handle hams who make ridiculous antenna claims |
June 8, 2008 Show
| 080608tech-001 | 3.15 | N2EO Rich: Needs advice on buying a HDTV and a combo VHS/Blu-Ray deck |
| 080608tech-001 | 13.02 | KE2EJ Eric: Gives advice on buying an HDTV |
| 080608tech-001 | 18.04 | Mel gives advice on buying a combo unit |
| 080608tech-001 | 18.58 | Mel: Consumer Reports is a good source for comparing HDTVs |
| 080608tech-001 | 22.14 | W2SN Paul: Shares info of his VHS/Disk unit |
| 080608tech-001 | 24.01 | Cablevision may change features on new DVRs |
| 080608tech-001 | 31.21 | KC2OJO Howie: Suggests to Rich to buy a smaller set rather than a large set |
| 080608tech-001 | 21.10 | KE2EJ Eric: 720p vs. 1080i and 1080p |
| 080608tech-001 | 39.09 | Discussion on screen fps flicker and shutter |
| 080608tech-001 | 44.32 | WA2RYY Joe: Why is electric noise vertically polarized? |
| 080608tech-001 | 46.57 | How elevation angle relates to electrical noise |
| 080608tech-001 | 48.26 | Mel: Electrical noise polarization in not purely vertical |
| 080608tech-001 | 51.45 | Strong noise vs. weak noise when the band is dead |
| 080608tech-002 | 0.00 | Mel: Why does the same noise source vary in strength |
| 080608tech-002 | 2.30 | KC2QIQ Glenn: Shares results when testing noise with antennas and an analyzer |
| 080608tech-002 | 5.16 | Dick describes IC noise on his TV set |
| 080608tech-002 | 11.33 | Is it safer being in a car during a lightning storm? |
| 080608tech-002 | 13.12 | Dick: Still lots of road noise when in a closed convertible |
| 080608tech-002 | 15.16 | KE2EJ Eric: How Ch. 21 went down due to a lightning strike. |
| 080608tech-002 | 19.00 | Mels tells of a friend who dismantles nuclear bombs for a career |
| 080608tech-002 | 22.18 | SPACE REPORT w/WS2N Paul: STS 124 update, the new ISS Harmony module |
| 080608tech-002 | 26.37 | Phoenix mission soil sample problem, and a ISS's 12' diameter rotary arm repair |
| 080608tech-002 | 36.32 | Dick: How fast do electrons travel in a 20 gauge wire with a steady state current of 5 amps |
| 080608tech-002 | 43.41 | Understanding farads, amperes, and Coolum's (sp?) |
| 080608tech-002 | 52.41 | Dick and Mel discuss the 800Mhz tone that’s effecting Mel's signal |
| 080608tech-002 | 54.48 | Joe Taylor's doppler letter to 2008 CQ Magazine regarding K2RIW's "Magic of Wireless" |
| 080608tech-003 | 0.00 | Examining Joe Taylor spectrogram plots |
| 080608tech-003 | 1.09 | Dicks Doppler reflection results on 10Ghz |
| 080608tech-003 | 4.12 | WA2CDL Andy: Suggested on starting a discussion on sunspots |
| 080608tech-003 | 6.51 | WA2CDL Andy: reviews the recent Hall of Science Hamfest |
| 080608tech-003 | 10.09 | Mel: March 2008 Consumer Reports has in depth article on 100 reviews of large screen TVs |
| 080608tech-003 | 11.52 | Dick and Mel discuss the 800Mhz tone that’s effecting Mel's signal revisited |
| 080608tech-003 | 24.10 | Mel discusses the latest HF band openings |
| 080608tech-003 | 29.08 | Mel: There's a decline in HF CW hams on the air |
| 080608tech-003 | 30.36 | Mel claims 29 degrees is the best angle for his Sloper |
| 080608tech-003 | 32.11 | Mel and Dick discuss the angle of Mel's Sloper |
| 080608tech-004 | 0.00 | Cont Mel and Dick discuss the angle of Mel's Sloper |
| 080608tech-004 | 8.48 | N2RSO Frank: Has a new way to use bus bars with a vertical antenna |
| 080608tech-004 | 14.00 | MELS EMAIL 01: How can I hear CW better using active filters? |
| 080608tech-004 | 25.35 | Dick explains a Receiver Incrementing Tuning Control (RIT) |
| 080608tech-004 | 26.45 | Dick explains why some hams use two receivers at the same time |
| 080608tech-004 | 30.22 | Mel explains the function of variable Q active band pass filter |
| 080608tech-004 | 32.30 | DSP and active filters |
| 080608tech-004 | 36.50 | MELS EMAIL 02: What is meant by optimum elevation angles on different bands? |
| 080608tech-004 | 43.30 | Elevation angles of higher antennas vs lower antennas |
| 080608tech-004 | 46.58 | Myths of Log Periodics vs single band antennas elevated angles |
| 080608tech-004 | 50.00 | Dick explains the product of a horizontal and vertical beam width |
| 080608tech-004 | 54.30 | Does the type of ground you're on effect the wavelength above the ground? |
| 080608tech-004 | 56.34 | Is there a "best" elevation angle? |
| 080608tech-004 | 62.31 | Does the gain vary throughout the coverage of a log periodic? |
June 15, 2008 Show
| 080615tech-001 | 3.15 | WB2CUK Bill: What exactly is HAARP? |
| 080615tech-001 | 8.01 | The ionosphere examined |
| 080615tech-001 | 10.30 | The purpose and construction of HAARP |
| 080615tech-001 | 17.28 | How long does the ionosphere stay charged after HAARP is turned off? |
| 080615tech-001 | 19.18 | Dick defines Gram-mole Index |
| 080615tech-001 | 20.17 | The behavior of air molecules |
| 080615tech-001 | 24.35 | Telemetry receivers - what are they? |
| 080615tech-001 | 29.00 | Measuring solar and galactic winds with the Pioneer and Voyager spacecrafts |
| 080615tech-001 | 33.46 | When in space, at what point is the sun no longer effective to supply solar energy? |
| 080615tech-001 | 37.25 | What is a 100% efficient solar cell? |
| 080615tech-001 | 41.25 | The lack of government involvement in solar cell research |
| 080615tech-001 | 44.52 | US dependency on foreign oil |
| 080615tech-001 | 50.50 | Looking back at Jimmy Carter's attempt to stop foreign oil dependency |
| 080615tech-001 | 53.39 | The effect of the "not in my backyard" mentality |
| 080615tech-001 | 59.51 | Examining air-compressed powered cars |
| 080615tech-002 | 0.00 | Cont Examining air-compressed powered cars |
| 080615tech-002 | 1.52 | Nuclear power's return on investment |
| 080615tech-002 | 6.00 | Mass production and advances reduced price of satellite dishes |
| 080615tech-002 | 8.40 | KE2EJ-Eric: 1000 years of biological growth used up in one day |
| 080615tech-002 | 12.01 | What other countries are doing for alternative energy |
| 080615tech-002 | 16.10 | How fuel mixture effects Dick's MPG |
| 080615tech-002 | 17.34 | KC2ONO Mike: The TechNet is fantastic |
| 080615tech-002 | 16.09 | The different fuels used in torpedoes |
| 080615tech-002 | 20.55 | The debate over what caused global warming and hot to fix it |
| 080615tech-002 | 33.50 | Bayville NY's misunderstanding of RF radiation |
| 080615tech-002 | 36.24 | The debate over what caused global warming and hot to fix it revisited |
| 080615tech-002 | 43.57 | The effects of deforestation and how to control it |
| 080615tech-002 | 55.49 | SPACE REPORT W/ WS2N Paul: Updates on Phoenix's dirt samples and ISS's robotic arm |
| 080615tech-003 | 0.00 | Cont SPACE REPORT W/ WS2N Paul: Updates on Phoenix's dirt samples and ISS's robotic arm |
| 080615tech-003 | 3.10 | The different types of ice that may be found on Mars |
| 080615tech-003 | 6.50 | A UFO may have followed the space shuttle during this mission |
| 080615tech-003 | 12.10 | What will be replacing the shuttle? |
| 080615tech-003 | 21.15 | Mel gives propagation update and discusses the openings on 40m |
| 080615tech-003 | 27.40 | Mel explains how he uses military teletype stations as beacons |
| 080615tech-003 | 29.23 | The state of the 30m band propagation |
| 080615tech-003 | 31.30 | MELS EMAIL 01: I bought an Italian-made Open Quad for 432Mhz- familiar with it? |
| 080615tech-003 | 37.30 | Mel: A Yagi's gain is based on the boom |
| 080615tech-003 | 40.00 | Mel and Dick question the claims made about the Italian Open Quad antenna |
| 080615tech-003 | 43.17 | Examining the Quad-Yagi design |
| 080615tech-003 | 50.00 | MELS EMAIL 02: How do you find a Johnson Kilowatt Matchbox Dual Differential Capacitor? |
| 080615tech-003 | 57.02 | Applying a circuit to a Dual Differential Capacitor |
| 080615tech-003 | 59.14 | Impedance matching related to the Dual Differential Capacitor |
| 080615tech-003 | 61.01 | On Google enter the words "impedance match" to find the Berkeley College Impedance calculator |
| 080615tech-004 | 0.00 | "http://bwrc.eecs.berkeley.edu/Research/RF/projects/60GHz/matching/ImpMatch.html |
| 080615tech-004 | 12.05 | MELS EMAIL 02: How do you find a Johnson Kilowatt Matchbox Dual Differential Capacitor? Revisited |
| 080615tech-004 | 13.45 | Dick: The hidden available TVI filter offered at no cost that no one knows about |
| 080615tech-004 | 19.08 | MELS EMAIL 02: How do you find a Johnson Kilowatt Matchbox Dual Differential Capacitor? Revisited |
| 080615tech-004 | 21.05 | MELS EMAIL 03: I want to put up a 40m-10m rhombic antenna- need advice |
| 080615tech-004 | 26.10 | Dick examines the parts of a rhombic antenna |
| 080615tech-004 | 35.20 | What to do if you want to change bands with a rhombic antenna |
| 080615tech-004 | 40.50 | What wire do you use for a rhombic antenna? |
| 080615tech-004 | 43.17 | Dick: Why NOT to use stainless steel for antenna |
| 080615tech-004 | 46.16 | Terminating a rhombic antenna |
| 080615tech-004 | 52.13 | WS2N Paul: the short link for the Berkeley calculator is http://tinyurl.com/3pn3b |
June 22, 2008 Show
| 080622tech-001 | 0.00 | TechNet's false start at 7pm (whoops!) |
| 080622tech-001 | 4.49 | KE2EJ Eric: Let's discuss VHF Omni directional Ranging Stations (VORs) |
| 080622tech-001 | 9.02 | The variable and reference frequencies of VORs |
| 080622tech-001 | 11.06 | The design of the VOR antenna system |
| 080622tech-001 | 16.53 | Radar Handbook by Merrill Skolnick and Antenna Eng. Handbook good sources for VORs |
| 080622tech-001 | 17.07 | Examining the five major concepts of direction finding |
| 080622tech-001 | 20.01 | Introduction to Radar by Merrill Skolnick also good source for directional finding systems |
| 080622tech-001 | 23.23 | K2KYQ Joe: Are there any real dangers in using cell phones and microwave ovens? |
| 080622tech-001 | 31.14 | ANSI Report C-95 Report good source for RF biohazard regulations |
| 080622tech-001 | 37.08 | RF biohazard scenarios throughout the ham bands |
| 080622tech-001 | 41.38 | United Kingdom: Children using cell phones is dangerous |
| 080622tech-001 | 53.26 | Shielding from high tension transmission systems |
| 080622tech-002 | 0.00 | Cont Shielding from high tension transmission systems |
| 080622tech-002 | 1.15 | N2EIJ Andrew: My radio goes crazy when I drive under high tension lines |
| 080622tech-002 | 5.34 | WA2RYY Joe: How did you determine the 80db of isolation o the Advanced Receiver Research pre-amp? |
| 080622tech-002 | 14.26 | Is aluminum tape good for RF shielding? |
| 080622tech-002 | 18.52 | Considerations when making an effective Faraday Shield |
| 080622tech-002 | 19.37 | Making a good shield for a Mirage B1016 amp |
| 080622tech-002 | 23.41 | The difficulty in completely stopping RF energy in a screen room |
| 080622tech-002 | 26.33 | Dick defines "finger stock" and where to find it |
| 080622tech-002 | 35.00 | The new 1 square kilometer SKA radio telescope |
| 080622tech-002 | 37.03 | SPACE REPORT by WS2N Paul: Update on Phoenix's search for water |
| 080622tech-002 | 42.16 | Does Phoenix have a battery hibernation mode? |
| 080622tech-002 | 51.05 | The new 1 square kilometer SKA radio telescope revisited |
| 080622tech-002 | 52.38 | Dick explains the Stanley Miller Experiment |
| 080622tech-003 | 0.00 | Cont Dick explains the Stanley Miller Experiment |
| 080622tech-003 | 3.50 | Mel shares the a little history of Floyd Bennett Field and its control tower |
| 080622tech-003 | 7.49 | Floyd Bennett Field events |
| 080622tech-003 | 10.36 | The world's present energy and food dilemma |
| 080622tech-003 | 22.00 | MELS EMAIL 01: What is the highest frequency man has ever produced? |
| 080622tech-003 | 28.21 | Radio waves vs. infrared waves |
| 080622tech-003 | 34.28 | Man and the entire radio spectrum |
| 080622tech-003 | 39.32 | Dick explains a Laser Interferometer |
| 080622tech-003 | 41.16 | Radiometry's "quiet zone" |
| 080622tech-003 | 45.27 | Mel's 30m propagation update and Mel's Sloper angle clarification |
| 080622tech-003 | 55.36 | The effects of using different sloping for dipoles and inverted v's |
| 080622tech-004 | 0.00 | The effects of using different sloping for dipoles and inverted v's |
| 080622tech-004 | 1.31 | Mel: When do you call a vertical antenna a Sloper? |
| 080622tech-004 | 3.22 | The ever-changing polarization of an HF signal |
| 080622tech-004 | 8.01 | Mel: Why is 30m propagation so good? |
| 080622tech-004 | 15.53 | Examining the ionosphere's layers and its absorption |
| 080622tech-004 | 19.14 | Examining the E, F1, and F2 layers |
| 080622tech-004 | 31.49 | How to look at sunspots through your telescope |
| 080622tech-004 | 34.48 | spaceweather dot com good source for daily photos of the sun |
| 080622tech-004 | 35.39 | Examining the Van Allen Belt |
| 080622tech-004 | 41.19 | MELS EMAIL 02: Please evaluate the "1 turn" 10m antenna that's popular on the west coast |
| 080622tech-004 | 58.35 | Mel: Thinks article on the "1 turn" antenna is covered in Radio World magazine by Sterba |
June 29, 2008 Show
| 080629tech-001 | 0.00 | Already I progress- Dick lists some different modes of ham radio |
| 080629tech-001 | 9.06 | Mode that are used in portable operation on the 10GHz and 2m bands |
| 080629tech-001 | 12.21 | Objectives when participating in a 10GHz contest |
| 080629tech-001 | 19.47 | N2EO Rich: Wants to program his Logitech remote to run his Boston Acoustic digital radio |
| 080629tech-001 | 28.42 | W2EWK Eugene: Kenwood 701A not holding memory needs to find battery |
| 080629tech-001 | 32.18 | Different Kenwood models that have hard to replace batteries |
| 080629tech-001 | 39.03 | Mel: Kenwood has a difficult tech support department to deal with |
| 080629tech-001 | 40.41 | WA2CDL Andy: Digikey good source for tab holding batteries |
| 080629tech-001 | 43.35 | Mel: Kenwood has a difficult tech support department to deal with revisited |
| 080629tech-001 | 45.57 | AllElectronics.com good source for radio backup batteries |
| 080629tech-001 | 48.44 | Mel says he runs into problems when he extends his leads to his backup batteries |
| 080629tech-001 | 54.01 | WB2CUK Bill: Has 200' of wire-one end in rig- other end in to ground or leave the end open? |
| 080629tech-002 | 0.00 | Cont WB2CUK Bill: Has 200' of wire-one end in rig- other end in to ground or leave the end open? |
| 080629tech-002 | 4.02 | What is the impedance of a 5/8 wave end fed antenna? |
| 080629tech-002 | 14.55 | WB2CUK Bill: Clarifies that the rig in his 200' wire question is for receiving only |
| 080629tech-002 | 16.26 | Dick's friend: Does an Icom IC2AT have a potentiometer adjustment inside? |
| 080629tech-002 | 23.54 | Reviews of Field Day at: Floyd Bennett Field, Northrup Grumman ARC, and Great South Bay ARC |
| 080629tech-002 | 32.01 | Transmitter codes used for Field Day documentation |
| 080629tech-002 | 36.18 | Review of Field Day at KCRA |
| 080629tech-002 | 38.23 | The real reason for having Field Day every year |
| 080629tech-002 | 41.16 | Review of Field Day at Dix Hills |
| 080629tech-002 | 46.33 | Review of Field Day at Wantaugh Railroad Museum ARC |
| 080629tech-002 | 49.37 | Which wire on an OCF dipole do you connect to a balun? |
| 080629tech-002 | 56.39 | WA2CDL Andy: On antenna towers why do SationMaster antennas have sloped radials ? |
| 080629tech-003 | 0.00 | Cont WA2CDL Andy: On antenna towers why do SationMaster antennas have sloped radials ? |
| 080629tech-003 | 4.09 | The role of a counter poise in an antenna system |
| 080629tech-003 | 9.51 | Examining the StationMaster construction in detail |
| 080629tech-003 | 11.49 | Antenna Engineering Handbook CH.3 Brown & Woodward charts good source for… |
| 080629tech-003 | 11.50 | …monopole antennas and infinite ground planes |
| 080629tech-003 | 20.46 | Dick: The new wave of real time tx/rec antennas is here |
| 080629tech-003 | 28.10 | RF tag modulation and receiver echo |
| 080629tech-003 | 31.48 | The future of RF Tag technology |
| 080629tech-003 | 37.45 | Mel shares more of 2008 Field Day at Floyd Bennett Field |
| 080629tech-003 | 41.20 | Inverter-principle and alternator-type generators used for ham use |
| 080629tech-003 | 52.06 | A look at ferrites in switching power supplies |
| 080629tech-003 | 54.21 | Magneticsinc.com good source on ferrite information |
| 080629tech-003 | 56.40 | Powdered iron vs. ferrite |
| 080629tech-004 | 0.00 | New green renewable power initiatives in Europe and in the US |
| 080629tech-004 | 1.05 | KC2QIQ Glenn describes a cycloconverter |
| 080629tech-004 | 3.21 | WA2RYY Joe and Dick explain the function of the Chevy/Shev filter |
| 080629tech-004 | 11.47 | Directional couplers that are used for full duplex operations |
| 080629tech-004 | 19.49 | Dick goes into detail about "CW Radar" |
| 080629tech-004 | 22.53 | Protecting yourself from RF Tag readers |
| 080629tech-004 | 24.44 | N2RSO Frank: Examining Honda generators power that "not pure" |
| 080629tech-004 | 29.17 | WW2WW Tim: Are there any new breakthroughs in infer sound technology |
| 080629tech-004 | 35.30 | How a handheld RF readers finds an RF tag in a warehouse |
| 080629tech-004 | 39.16 | Mel talks about KC2QIQ Glenn's 1KW mobile amplifier |
| 080629tech-004 | 45.35 | Transformer designs by EdCoe (sp) Electronics |
| 080629tech-004 | 50.16 | Why EdCoe (sp) and other related companies went out of business |
| 080706tech-001 | 2.16 | WA2RYY Joe: My StationMaster receives better than my Yagi- why? |
| 080706tech-001 | 2.17 | WA2RYY Joe gives details on coax used, coax length, return loss, polarization etc |
| 080706tech-001 | 14.51 | WA2RYY Joe gives details on antenna height and surrounding terrain |
| 080706tech-001 | 16.06 | Dick offers some answers to WA2RYY Joe's StationMaster/Yagi question |
| 080706tech-001 | 25.32 | The effects of signal path and reflection |
| 080706tech-001 | 29.00 | WA2RYY Joe and KE2EJ Eric discuss frequency stability and DTV carrier makeup |
| 080706tech-001 | 40.49 | WA2RYY Joe explains how he measures a frequency |
| 080706tech-001 | 43.22 | How accurate are the frequency measures from the Bureau of Standards? |
| 080706tech-001 | 49.21 | W2JPW Lou: How will 6m be effected by DTV TVI? |
| 080706tech-001 | 51.53 | Dick's discussion of Drake and Kenwood noise blankers and how they work |
| 080706tech-001 | 57.30 | Mel's experience with noise blankers |
| 080706tech-002 | 0.00 | Cont Mel's experience with noise blankers |
| 080706tech-002 | 1.42 | W2JPW Lou: How will 6m be effected by DTV TVI? Revisited |
| 080706tech-002 | 2.56 | Dick: Some TV frequencies will not be used for DTV |
| 080706tech-002 | 5.55 | KE2EJ Eric: In depth explanation of the workings of DTV signal generators |
| 080706tech-002 | 11.40 | KE2EJ Eric explains mask filters |
| 080706tech-002 | 14.31 | Will CH. 2-13 be used in the same place after the DTV conversion? |
| 080706tech-002 | 15.34 | TV signal ERPs and KE2EJ Eric shares his TV antenna transmission specs |
| 080706tech-002 | 23.26 | KE2EJ Eric defines a "Peanut Antenna" |
| 080706tech-002 | 29.40 | Comparing Verizon and Cablevision's infrastructure and future |
| 080706tech-002 | 32.18 | KE2EJ Eric: shares backup systems of local NY metro area TV stations and the Empire State Bldg |
| 080706tech-002 | 44.10 | Mel and Dick reiterate TechNet email rules |
| 080706tech-002 | 57.15 | Dick: Troubleshooting vs. testing manufacturer specs |
| 080706tech-003 | 0.00 | Cont Dick: Troubleshooting vs. testing manufacturer specs |
| 080706tech-003 | 8.01 | Electronic Design June 26, 2008 issue good editorial on Photovoltiacs |
| 080706tech-003 | 11.10 | Dick: NPR had good story of a man trying to sell back his large SUV back to dealers |
| 080706tech-003 | 16.42 | KC2QIQ Glen: LIPWER's incentive for home owners to build solar cells LIPWER.org/effeciency/solar.html |
| 080706tech-003 | 23.46 | Building solar panels vs. tax increases on your home |
| 080706tech-003 | 36.54 | Will CH. 2-13 be used in the same place after the DTV conversion? Revisited |
| 080706tech-003 | 42.29 | The reliability of VHF low band frequencies for fire departments |
| 080706tech-003 | 46.46 | Challenges for Public Service agencies and the 700Mhz band |
| 080706tech-003 | 53.00 | MELS EMAIL 01: What is transciever phase noise? |
| 080706tech-004 | 0.00 | Cont MELS EMAIL 01: What is transceiver phase noise? |
| 080706tech-004 | 4.21 | How the ARRL Labs conduct phase noise tests |
| 080706tech-004 | 9.08 | The importance of a quality oscillator and other synthesizers |
| 080706tech-004 | 15.25 | Final resolution filters, roofing filters, preamps, and the effect on dynamic range |
| 080706tech-004 | 23.10 | MELS EMAIL 02: What is a Loaded Q? |
| 080706tech-004 | 31.09 | Dick explains Unloaded Q Ratio |
| 080706tech-004 | 33.55 | Mel and Dick examine the real definition of Q |
| 080706tech-004 | 40.48 | The difference between series resistance and loading the resistance across an IF circuit |
| 080706tech-004 | 44.27 | Dick explains Group Delayed Distortion |
| 080706tech-004 | 45.31 | Mel explains the design of a loaded Q amplifier |
| 080706tech-004 | 48.30 | The four definitions of Q |
| 080706tech-004 | 51.30 | MELS EMAIL 03: What is a Thevenin Circuit? |
July 20, 2008 Show
| 080720tech-001 | 5.01 | KD2BD John: There will be a visual sighting pass of the ISS tonight |
| 080720tech-001 | 8.30 | How people track the ISS through their telescope |
| 080720tech-001 | 12.19 | W2TRB Irwin: shares his 1970's Brookhaven Labs research on oil burner efficiency |
| 080720tech-001 | 14.05 | Dick and Irwin share how they self maintain their furnace systems |
| 080720tech-001 | 31.43 | The debate of furnace valve pressure and filter adjusting |
| 080720tech-001 | 38.07 | Dick: The importance of a delay cutoff valve |
| 080720tech-001 | 47.06 | Dick: Conflict of interest when an oil co. has a service plan and sells oil to the same customer |
| 080720tech-001 | 51.20 | The importance of a smoke sampling device |
| 080720tech-001 | 55.15 | Mel shares how he switched to gas heat at no cost |
| 080720tech-001 | 58.04 | Dick: The insulation property of soot - the double loss |
| 080720tech-001 | 60.15 | Dick: The need for more oil burner efficiency research |
| 080720tech-001 | 61.37 | Mel shares how he switched to gas heat at no cost revisited |
| 080720tech-002 | 0.00 | Cont Mel shares how he switched to gas heat at no cost revisited |
| 080720tech-002 | 2.29 | The sudden price increase of oil tank sludge solvent |
| 080720tech-002 | 3.51 | Dick shares how he installed his own furnace |
| 080720tech-002 | 5.26 | The new natural gas furnace that doesn't require a flume |
| 080720tech-002 | 8.33 | Dick: The importance of a delay cutoff valve revisited |
| 080720tech-002 | 13.00 | WA2RYY Joe: How do I determine the efficiency of my microwave oven? |
| 080720tech-002 | 24.27 | The effects of using a cup with lead content in a microwave |
| 080720tech-002 | 25.51 | Stress in glass exposed to increased temperature |
| 080720tech-002 | 30.56 | The effects of using a cup with lead content in a microwave revisited |
| 080720tech-002 | 31.35 | KC2MIQ Charlie: How do fuel cells operate? |
| 080720tech-002 | 35.01 | Hydrogen's role in fuel cells |
| 080720tech-002 | 38.54 | KE2EJ Eric: Gives in depth explanation of nonconbustive fuel sources and hydrogen fuel cells |
| 080720tech-002 | 48.23 | Storage of fuel, energy density, and energy usage discussed |
| 080720tech-002 | 55.00 | Mel: What other sources of energy that we may have overlooked? |
| 080720tech-003 | 0.00 | The promising future of sloar power |
| 080720tech-003 | 3.10 | KE2EJ Eric: examines solar panel inverters |
| 080720tech-003 | 6.40 | The energy crisis has no silver bullet answer |
| 080720tech-003 | 9.41 | KE2EJ Eric: examines solar panel inverters revisited |
| 080720tech-003 | 12.53 | KE2EJ Eric: The state of photovoltaics |
| 080720tech-003 | 14.25 | The North American Gulf Stream as a source for energy |
| 080720tech-003 | 19.00 | amateurradio.tv good source for LIMARC TechNet archive audio index and audio footage |
| 080720tech-003 | 22.00 | All about the latest edition of the Antenna Engineering Handbook |
| 080720tech-003 | 24.24 | Dick: The shortcoming of RF Engineering education in the US |
| 080720tech-003 | 33.50 | WA2RYY Joe: How do I determine the efficiency of my microwave oven? Revisited |
| 080720tech-003 | 36.25 | Dick: Sid Harvey's book good source on servicing oil furnaces |
| 080720tech-003 | 41.30 | Dick goes into detail about using effecientg oil furnace nosals |
| 080720tech-003 | 48.20 | Dick's home thermal time constant |
| 080720tech-003 | 52.19 | Mel- What's better for home heating, steam heat or hot air? |
| 080720tech-003 | 53.13 | How Dick utilizes his furnaces flume pipe for heat |
| 080720tech-003 | 62.20 | Why ice forms on A/C coils |
| 080720tech-004 | 0.00 | Cont Why ice forms on A/C coils |
| 080720tech-004 | 9.03 | MELS EMAIL 01: Will I get better performance with a bi-directional 15m array rather than a dipole? |
| 080720tech-004 | 10.22 | Dick: QEX July/Aug 2008 p.47 good article on an efficient rotatable dipole (The Goofy Foot Yagi) |
| 080720tech-004 | 18.10 | Comparing The Goofy Foot Yagi to a Lazy H Antenna |
| 080720tech-004 | 27.34 | WA5VJB.com good source for printed circuit antennas |
| 080720tech-004 | 29.13 | Will I get better performance with a bi-directional 15m array rather than a dipole? Revisited |
| 080720tech-004 | 31.45 | MELS EMAIL 02: Is it worth it to build a linear array for 40m? |
| 080720tech-004 | 35.40 | Mel and Dick compare the Franklin (Co-linear) Array, the Bruce, and the Sterba/Curtain antenna |
July 27, 2008 Show
| 080727tech-001 | 7.22 | WA2RYY Joe: Continued with his microwave efficiency test from 080720 #002 13:02 |
| 080727tech-001 | 18.33 | W2EUK Eugene: Needs wiring advice for an Icom 7000 installation into a 2000 Mustang |
| 080727tech-001 | 24.00 | Internal regulator drop out problems i.e. Kenwood 751A |
| 080727tech-001 | 27.35 | Lightning and hail storm stories around the tri-state area |
| 080727tech-001 | 29.40 | NY3H Harris: Shares the workings of Nassau Skywarn on 146.805 |
| 080727tech-001 | 35.30 | Lightning and hail storm stories around the tri-state area revisited |
| 080727tech-001 | 36.45 | Does transmitting attract lightning? |
| 080727tech-001 | 45.50 | How do you measure the current of a lightning bolt? |
| 080727tech-001 | 53.40 | Ways to protect yourself during a lightning storm |
| 080727tech-001 | 57.40 | Lightning surge devices are not guaranteed to protect equipment |
| 080727tech-001 | 59.33 | Dick shares how one of his clients tried to beat lightning strikes and failed |
| 080727tech-001 | 61.25 | KE2EJ Eric: Shares what happens when lighting hits broadcast TV towers |
| 080727tech-002 | 0.00 | Cont KE2EJ Eric: Shares what happens when lighting hits broadcast TV towers |
| 080727tech-002 | 4.18 | KE2EJ Eric: shares how PBS's datalink downloads operates |
| 080727tech-002 | 8.10 | Mel discusses lightning fatalities that occurred next to his home |
| 080727tech-002 | 10.12 | How being in a car protects you from lightning |
| 080727tech-002 | 12.19 | How a metal porcupine at the top of a towers combats lightning |
| 080727tech-002 | 15.33 | SPACE REPORT WITH W2SN PAUL: Update on the Phoenix soil sample experiment on Mars |
| 080727tech-002 | 20.01 | The week is the 39th Anniversary of the Apollo 11 landing |
| 080727tech-002 | 22.44 | Dick: What were you doing when we landed on the moon? |
| 080727tech-002 | 30.51 | Dick shares WA2RYY Joes microwave efficiency equations started on 080720 #002 13:02 |
| 080727tech-002 | 40.05 | In depth discussion of fiber optics and the Verizon VIOS System |
| 080727tech-003 | 0.00 | Cont In depth discussion of fiber optics and the Verizon VIOS System |
| 080727tech-003 | 2.04 | How prisms break up information I fiber optic cables |
| 080727tech-003 | 5.02 | Comparing fiber optic network addresses to internet addresses |
| 080727tech-003 | 11.48 | WS2N Paul: Cites a QST article on space wiring |
| 080727tech-003 | 14.03 | The use of remote control telescopes |
| 080727tech-003 | 15.36 | Is the OC192 or 384 standard being used in Verizon fiber optics? |
| 080727tech-003 | 20.02 | Why fiber optics not coax is the future |
| 080727tech-003 | 22.51 | The number of NYC TV viewers who still view off the air broadcasts |
| 080727tech-003 | 31.47 | Audio compression sampling of audio files of the TechNet |
| 080727tech-003 | 41.00 | KE2EJ Eric: explains audio quantification |
| 080727tech-003 | 45.23 | Mel shares feedback on the TechNet from his email |
| 080727tech-003 | 50.40 | Review of the FCC's recent performance on evaluating on-air content |
| 080727tech-003 | 52.39 | Why PBS's content changes based on market's location |
| 080727tech-003 | 55.05 | Sesame Street was once banned in Mississippi |
| 080727tech-003 | 56.10 | Opinions on www.watchfreetv.com |
| 080727tech-003 | 58.33 | The merging of Sirius and XM satellite radio |
| 080727tech-003 | 60.40 | The benefits of using amateurradio.tv's index system to listen to the TechNet |
| 080727tech-004 | 0.00 | People shares opinions on TechNets topics |
| 080727tech-004 | 3.50 | MELS EMAIL 01: Would like to put up Rhombic antenna with correct terminating resistors |
| 080727tech-004 | 6.56 | What happens when you change the angle of Rhombic? |
| 080727tech-004 | 15.20 | Mel: The sensitive debate over the angle of elevation for Yagi antennas |
| 080727tech-004 | 19.17 | Mel shares his parabolic-designed dipole construction and performance |
| 080727tech-004 | 31.23 | MELS EMAIL 02: My LNA blew up when I lined my TVRO dish with aluminum foil-why? |
| 080727tech-004 | 35.41 | MELS EMAIL 03: How do you build a poor man's Time Domain Reflectometer (TDR) |
| 080803tech-001 | 3.03 | W2ABG Dave: Heavensabove.com good source for ISS flyover schedule |
| 080803tech-001 | 5.49 | N2RSO Frank: What does your rig see when you connect 40' of 750 HL, 20' of RG213, and 20' of RG213? |
| 080803tech-001 | 9.25 | Dick: How to get 750 Hardline at low or no cost |
| 080803tech-001 | 12.51 | The myth of coax loss when using connectors |
| 080803tech-001 | 18.23 | Charting coax impedance on a Smith Chart can be found on amateurradio.tv home page |
| 080803tech-001 | 23.10 | N2EO Rich: Needs advice on electroplating Collins tube socket saddles |
| 080803tech-001 | 29.30 | Working with magnesium in radio restoration |
| 080803tech-001 | 31.20 | Working with gold and copper in radio restoration |
| 080803tech-001 | 33.06 | Properties of electroplating |
| 080803tech-001 | 38.04 | N2EO Rich clarified his Collins electroplating question re: saddles |
| 080803tech-001 | 45.37 | The contents of a Collins chassis |
| 080803tech-001 | 48.55 | The dangers of handling cadmium plating |
| 080803tech-001 | 59.45 | N2NNU Alex: Would like to remotely tune his symmetric antenna (and has current flowing in tx line) |
| 080803tech-002 | 0.00 | N2NNU Alex: Would like to remotely tune his symmetric antenna (and has current flowing in tx line) |
| 080803tech-002 | 7.52 | The advantages of utilizing a 1:1 balun |
| 080803tech-002 | 9.33 | Radioworks.com good source for a variety of baluns and antennas |
| 080803tech-002 | 11.29 | N2NNU Alex gives more information for his antenna question |
| 080803tech-002 | 16.58 | Faraday rotation explained |
| 080803tech-002 | 20.15 | A way to put AC voltage and AC voltage up the Tx line for remote antenna control |
| 080803tech-002 | 23.15 | PIC is a good source for mechanical antenna gears |
| 080803tech-002 | 27.50 | Dick suggests making a new symmetric dipole similar to Mel's |
| 080803tech-002 | 39.00 | N2EO Rich: suggests using a remote antenna tuner once made by Collins for the military |
| 080803tech-002 | 41.30 | Discussion on Mel's effective green plastic coated wire |
| 080803tech-002 | 48.30 | The contents of a Collins chassis revisited |
| 080803tech-002 | 49.47 | Dick: NASA found something extraordinary in the soil Phoenix sampled (aviationweek.com) |
| 080803tech-002 | 53.35 | Astronomycast.com good source for space pod casts and pod cast transcripts |
| 080803tech-002 | 57.01 | Dick and Mel: What the TechNet is and is not. |
| 080803tech-003 | 5.00 | Mel: I have received 100 page manuscripts and was expected to review it |
| 080803tech-003 | 7.01 | Dick: TechNet has an informal "poor man's" equivalent of peer review |
| 080803tech-003 | 9.21 | KE2EJ Eric: TechNet is real-time exchange of information |
| 080803tech-003 | 14.01 | Mel: Ham in S.C. claims that the TechNet is being commercial-like and not following regulations |
| 080803tech-003 | 22.30 | WB2HWW Howie: Dick may be long winded because detail oriented subjects are discussed |
| 080803tech-003 | 31.36 | Mel: Long explainations are needed in this "quick fix" world |
| 080803tech-003 | 35.16 | The process of analytical and creative thinking is needed in education |
| 080803tech-003 | 45.51 | Dick: Why night classes have the best teachers |
| 080803tech-003 | 50.09 | Examining Sesame Street philosophy of segment lengths |
| 080803tech-003 | 57.50 | Rascism is still strong in poorly educated states like Mississippi |
| 080803tech-003 | 60.00 | Dick: TechNet email questions are not guaranteed to get answered |
| 080803tech-004 | 0.00 | Cont Dick: TechNet email questions are not guaranteed to get answered |
| 080803tech-004 | 7.50 | WB2HWW Howie: What will happen to CH.6 in NY after the DTV conversion? |
| 080803tech-004 | 10.10 | MELS EMAIL 01: How to determine wire lengths for a fan dipole |
| 080803tech-004 | 16.40 | The contents of a Collins chassis revisited 2 |
| 080803tech-004 | 21.16 | MELS EMAIL 02: Will tapered elements of a 6m Yagi effect performance? |
| 080803tech-004 | 24.27 | If I change the Yagi boom's diameter will it effect the antenna's performance? |
| 080803tech-004 | 28.21 | MELS EMAIL 03: I have a 112 Mhz transmitter, can I modify it for 144Mhz? |
| 080803tech-004 | 33.00 | WA2CDL Andy: HF antennas- how high is too high for the angle of radiation? |
| 080803tech-004 | 42.15 | MELS EMAIL 04: I have a Hallicrafters SX-28, what is a good beginner's rig? |
| 080803tech-004 | 46.20 | N2EO Rich: Electronic Radio magazine's recent issue has info on building simple rigs |
August 10, 2008 Show
| 080810tech-001 | 4.05 | KC2RJW Joe: Should I buy an HF vertical with a counterpoise or without one? |
| 080810tech-001 | 8.01 | Dick explains Quarterwave ground planes |
| 080810tech-001 | 13.35 | Mel and N2EO Rich share their experiences with HF verticals |
| 080810tech-001 | 21.50 | How electronic resonance is made with Hamsticks |
| 080810tech-001 | 23.49 | KC2RJW Joe shares what his co-op allows in antenna construction |
| 080810tech-001 | 31.05 | Mel highly recommends anchoring a vertical to a center trunk of a tree |
| 080810tech-001 | 36.38 | WB2HWW Howie and Dick share the benefits of end fed antenna designs |
| 080810tech-001 | 43.46 | Mel shares how his catenary dipole is designed |
| 080810tech-001 | 47.51 | Mel shares how his antennas perform under different circumstances |
| 080810tech-001 | 55.08 | KC2RJN Joe shares how a horizontal end fed antenna works |
| 080810tech-001 | 56.46 | Dick emphasizes the importance of a counterpoise |
| 080810tech-002 | 0.00 | The construction of an end fed zep antenna from the 1930's |
| 080810tech-002 | 3.01 | SPACE REPORT WITH W2SN PAUL: President's briefing on the Phoenix soil sample |
| 080810tech-002 | 13.03 | Comparing Mars with Earth |
| 080810tech-002 | 17.17 | N2EO Rich: Got sparks when connecting a Johnson Viking Range 2 with a Collins R398 |
| 080810tech-002 | 24.40 | KE2EJ Eric: Uses of EMI filters and isolating transformers for older rigs |
| 080810tech-002 | 26.40 | How metal oxide varistors handle spikes |
| 080810tech-002 | 27.27 | Choke input filters networks and interaction with transformers |
| 080810tech-002 | 31.05 | How PBS Network stations handle power outages |
| 080810tech-002 | 36.40 | KE2EJ Eric go into detail about different types of chokes and isolation filters |
| 080810tech-002 | 45.15 | WA2CDL Andy: Shares his sighting of the ISS flyover |
| 080810tech-002 | 50.10 | WS2N Paul: Goes over the ISS dimensions |
| 080810tech-002 | 55.06 | Mel reviews what he heard on the Collins Net and discusses Collins filters |
| 080810tech-002 | 58.40 | MELS EMAIL 01: Heathkit Monitoring Scope's picture tube ahs ghosts- replace it? |
| 080810tech-003 | 0.00 | Cont MELS EMAIL 01: Heathkit Monitoring Scope's picture tube ahs ghosts- replace it? |
| 080810tech-003 | 7.35 | MELS EMAIL 02: Ham has linear amp with a pair of 4DX300 in finals- is there a replacement? |
| 080810tech-003 | 9.48 | MELS EMAIL 03: Can a home brew amp with 2 813's w/ an am modulator be converted to SSB? |
| 080810tech-003 | 21.24 | MELS EMAIL 04: Explain a rig's Noise/Bandwidth control and Noise Filter Response control? |
| 080810tech-003 | 29.19 | Why Drake was called the "poor man's" Collins rig |
| 080810tech-003 | 34.47 | MELS EMAIL 05: Is the 144Mhz Yagi design in the ARRL Antenna book reputable? |
| 080810tech-003 | 39.03 | Examining the SteppIR antenna |
| 080810tech-003 | 46.02 | Dick: Gain and Directivity are one of the same |
| 080810tech-003 | 49.36 | Dick: K9LTN.net is a good source of a multiple SteppIR array |
| 080810tech-004 | 0.00 | Cont Dick: K9LTN.net is a good source of a multiple SteppIR array |
| 080810tech-004 | 7.15 | MELS EMAIL 06: List the parts of a copper pipe J-pole you mention on previous TechNet |
| 080810tech-004 | 9.51 | smeter.net/7j4aal/antenna.pnp and bcdxc.org/martti_page1.htl - large array photo and info |
| 080810tech-004 | 16.13 | List the parts of a copper pipe J-pole you mention on previous TechNet revisited |
| 080810tech-004 | 17.44 | Examining the Yagi designs by K1FO and DL6WU |
| 080810tech-004 | 24.36 | Building yagis out of discarded TV antennas |
| 080810tech-004 | 27.15 | How antennas handle ice storms and other bad weather |
| 080810tech-004 | 35.28 | MELS EMAIL 07: Elderly ham needs advice on good ham radio headphones |
| 080810tech-004 | 40.07 | Heil Sound and timewave.com good sources for noise canceling devices |
| 080810tech-004 | 44.01 | The use of equalizers to improve rig audio |
August 17, 2008 Show
| 080817tech-001 | 4.03 | KC2MDP Steve: Testing the voltage of magnetic transformers and eclectic transformers |
| 080817tech-001 | 15.39 | KC2MDP Steve says that the 12v light is lit but the digital voltmeter reads 0.00 |
| 080817tech-001 | 21.21 | KC2OJO Howie: Using an indoor yagi for DTV Ch.14-16 but having reception problems |
| 080817tech-001 | 32.40 | What a DTV box's S-Meter reading really tells you |
| 080817tech-001 | 39.16 | Multipath and bit error rate in DTV signals |
| 080817tech-001 | 40.17 | Examining TV ghost canceling circuits |
| 080817tech-001 | 42.13 | KB2MAR Gabe: shares what he likes about his Zenith DTT900 DTV converter box |
| 080817tech-001 | 45.29 | Reviewing the specs of the Radio Shack single pole double throw F connector switch |
| 080817tech-001 | 51.50 | High marks for the $66.00 Radio Shack antenna rotator |
| 080817tech-001 | 58.50 | KC2QKQ Glenn: The off-set frequencies my dial shows while in CW, LSB or USB mode |
| 080817tech-002 | 0.00 | Cont KC2QKQ Glenn: The off-set frequencies my dial shows while in CW, LSB or USB mode |
| 080817tech-002 | 6.50 | The function of a tone locate button |
| 080817tech-002 | 9.02 | The secrets of tuning a CW ham signal who is using a narrow filter |
| 080817tech-002 | 12.54 | New rigs and the use of the RIT control |
| 080817tech-002 | 16.41 | Transmitting CW on a SSB band vs. transmitting SSB on a CW band |
| 080817tech-002 | 23.26 | Transmitting MCW and the law |
| 080817tech-002 | 30.22 | Dick explains passive demodulation distortion in relation to KC2QIW Joe's Icom R7000 |
| 080817tech-002 | 39.51 | Dick: "On and Off" of a device is a relative term |
| 080817tech-002 | 41.49 | Dick explains passive demodulation distortion in relation to KC2QIW Joe's Icom R7000 revisited |
| 080817tech-002 | 48.17 | Dick: shares info from the Big Magellan Telescope conference |
| 080817tech-002 | 56.49 | The debate over the QRZ's article on the suns decreasing temperature and the next ice age |
| 080817tech-003 | 0.00 | Cont The debate over the QRZ's article on the suns decreasing temperature and the next ice age |
| 080817tech-003 | 4.37 | KC2QIQ Glenn: Shares his 10m QSOs using a vertical antenna mounted at 40 feet |
| 080817tech-003 | 7.00 | Dick: QEX July/Aug 2008 p.47 good article on an efficient rotating dipole (The Goofy Foot Yagi) |
| 080817tech-003 | 12.49 | Misunderstanding of the term Standing Wave Ratio |
| 080817tech-003 | 15.10 | Dick: The exclusive club of the "Dead Band Operators" |
| 080817tech-003 | 17.22 | KC2QIW Joe shares news measurements on his Icom R7000 tests from 080807 #002 30.07 |
| 080817tech-003 | 21.53 | Dick and Mel share that some hams didn't believe their DX QSOs |
| 080817tech-003 | 27.45 | High positioned, high performing antenna, and invisible antennas hams home brew |
| 080817tech-003 | 30.49 | MELS EMAIL 01: Could a tree antenna cause a fire in a tree? |
| 080817tech-003 | 33.40 | MELS EMAIL 01: Could a tree antenna attract lightning? |
| 080817tech-003 | 35.30 | Precautions to take when putting a dipole in a pine tree |
| 080817tech-003 | 37.26 | Mel shares the design of his tree antennas and the use of PVC piping |
| 080817tech-003 | 46.08 | Mel suggests using tree branches as supports for radials |
| 080817tech-003 | 48.40 | Precautions to take when putting a dipole in a maple tree |
| 080817tech-003 | 51.45 | Precautions when using egg insulators to avoid arches |
| 080817tech-003 | 54.59 | How Mel using plastic pipes to protect the ends of his dipole |
| 080817tech-003 | 57.27 | Dick: Marketing opinion emails for the TechNet are not fair questions |
| 080817tech-004 | 0.00 | Cont Dick: Marketing opinion emails for the TechNet are not fair questions |
| 080817tech-004 | 4.32 | Dick: CT plans to allocate funds to replace inefficient oil furnaces |
| 080817tech-004 | 7.21 | Latest auto industry green products and the new non-starter motor engine |
| 080817tech-004 | 15.55 | The pros and cons of electric cars |
| 080817tech-004 | 17.40 | KC2QIQ Glenn: Lindenhurst NY now has a cell tower scare similar to the one Fayeville NY Had |
| 080817tech-004 | 26.24 | N2NNQ Alex and Dick: We still don't know exactly what RF radiation is but we know that its safe |
| 080817tech-004 | 31.56 | Removal of municipal cell towers vs. Homeland Security laws |
| 080817tech-004 | 37.34 | N2RSO Frank: IS RF emission related to cancer? |
| 080817tech-004 | 41.10 | Dick: The immeasurable data that determines the possible risks of possibly dangerous things |
August 24, 2008 Show
| 080824tech-001 | 0.00 | Dick outlines the rules of the TechNet |
| 080824tech-001 | 4.35 | N2EO Rich: needs advice on silk-screening front panels of rigs and meter faces |
| 080824tech-001 | 9.01 | Printed circuit board printed alternative to silk-screening |
| 080824tech-001 | 14.19 | KE2EJ Eric: suggest several ways such as thermal printing using White TRF |
| 080824tech-001 | 19.06 | Another alternative is printing on a hard surface (i.e. Pulsar Co printers) |
| 080824tech-001 | 29.01 | Mel explains metal printing on Hallicrafter rigs by Datak |
| 080824tech-001 | 31.50 | N2EO Rich: Briefly explains stenciling |
| 080824tech-001 | 35.27 | KE2EJ Eric: Suggest going to a Pearl Paints store for a silk screening box |
| 080824tech-001 | 38.05 | How to get Johnson labels and how to do transferring |
| 080824tech-001 | 41.30 | Z Communications (Glen K9STH) good source for Collins and Johnson reconditioned parts |
| 080824tech-001 | 44.12 | W2OSA Robert: Asked Dick if he remembered N2BB who participated in the TechNet long ago |
| 080824tech-001 | 46.37 | WA2RYY Joe: Explains how to connect to the TechNet through IRLP |
| 080824tech-001 | 49.39 | The TechNet is on live at W2LIR.net and WB2HWW.com website |
| 080824tech-002 | 0.00 | Cont The TechNet is on aired live on W2LIR.net and WB2HWW.com website |
| 080824tech-002 | 0.19 | Measuring the isolation of a duplexer between the receiver and the transmitter |
| 080824tech-002 | 2.23 | Subway radio problems due to fluorescent light power supplies |
| 080824tech-002 | 5.35 | Examining the HP8640B signal generator and the HP8594E spectrum analyzer |
| 080824tech-002 | 12.36 | WA2RYY Joe: Discusses reference levels during amp and frequency calibration |
| 080824tech-002 | 25.30 | Mel shares when he had problems with his HP8590 |
| 080824tech-002 | 26.41 | Dick asked KC2RYY Joe how he tested his HP8594E |
| 080824tech-002 | 33.20 | KE2EJ Eric: shares what he expects in performance from a spectrum analyzer |
| 080824tech-002 | 35.27 | Dick, Mel, and Joe conduct tests to see the accuracy of Joes HP8594E |
| 080824tech-002 | 49.10 | KC2CDL Andy: shares a repair he did on his HP8590 spectrum analyzer |
| 080824tech-002 | 53.29 | Dick: Before troubleshooting your rig, test the voltage power supplies first |
| 080824tech-002 | 57.05 | Dick, Mel, and Joe conduct tests to see the accuracy of Joes HP8594E revisited |
| 080824tech-002 | 59.20 | HP8594 service manual are at www.agilent.com |
| 080824tech-003 | 0.00 | Cont HP8594 service manual are at www.agilent.com |
| 080824tech-003 | 3.15 | KE2EJ Eric: gives info about his Advent (Tektronix) spectrum analyzer |
| 080824tech-003 | 5.05 | The present use of spectrum analyzers vs. network analyzers |
| 080824tech-003 | 7.39 | Dick promotes the use of stereo zoom microscopes |
| 080824tech-003 | 9.01 | KE2EJXM Gary: How do I measure receiver loss via network analyzer ports |
| 080824tech-003 | 18.31 | N2EO Rich: wants to find microscope goggles |
| 080824tech-003 | 21.15 | Dick promotes the use of stereo zoom microscopes revisited |
| 080824tech-003 | 22.11 | Comparing a stereo zoom microscope vs. microscope goggles |
| 080824tech-003 | 28.22 | WB2HWW Howard: Suggest seeing a eye doctor before purchasing microscope goggles |
| 080824tech-003 | 30.30 | Mel says that the Optivisor has a new non-surgical version of microscope goggles |
| 080824tech-003 | 31.30 | WB2HWW Howard: Suggest seeing a eye doctor before purchasing microscope goggles revisited |
| 080824tech-003 | 37.21 | NS2N Paul: His Kenwood 400's digital read out and s-meter malfunctions when the auto tuner is on |
| 080824tech-003 | 50.26 | Mel offers some solutions to NS2N's Kenwood problem |
| 080824tech-003 | 54.19 | Dick offers a multistep procedure to solve NS2N's Kenwood problem |
| 080824tech-004 | 0.00 | Cont Dick offers a multistep procedure to solve NS2N's Kenwood problem |
| 080824tech-004 | 6.40 | SPACE REPORT WS2N Paul: Future NASA missions |
| 080824tech-004 | 9.25 | MELS EMAIL 01: What do I look for in a perfect QTH for excellent Dxing? |
| 080824tech-004 | 20.02 | Why Japan is the best QTH for Dxing |
| 080824tech-004 | 22.31 | Other factors that could contribute to good Dxing i.e. counterpoises |
| 080824tech-004 | 30.14 | WB2HWW Howie: W2FLA.com good site showing a DX station |
| 080824tech-004 | 31.10 | N2EO Rich: suggests moving to Monaco to build your dream QTH |
| 080824tech-004 | 33.59 | Mel says that his own QTH on LI is a very good DX station |
| 080824tech-004 | 44.29 | MELS EMAIL 02: What is a good first antenna? |
| 080907tech-001 | 2.14 | N2EO Rich: Can't find info for the Waters Model 337A that was posted for sales on the Collins Net |
| 080907tech-001 | 9.12 | KC2MDP Steve: Why aren't more solid state hard drives used today? |
| 080907tech-001 | 14.51 | How Spirit and Opportunity use flash drives |
| 080907tech-001 | 16.24 | The economic comparison between IDE Hard drives and Flash Hard Drives |
| 080907tech-001 | 20.15 | Repairing a smashed in tuning knob of a Yaesu FT102 |
| 080907tech-001 | 23.45 | NC4L and the Yaesu FT102 Yahoo group good source for Yaesu FT102 information |
| 080907tech-001 | 31.00 | SPACE REPORT WITH WS2N Paul: European Space Agency launches mission to Sun |
| 080907tech-001 | 36.11 | The 5 year future of shuttle and ISS seating arrangements |
| 080907tech-001 | 41.50 | Explanation of Q Multipliers and negative resistance |
| 080907tech-001 | 54.10 | Mel and Dick discuss the Heathkit Q Multipliers and other Q Multipliers |
| 080907tech-002 | 0.00 | Cont Mel and Dick discuss the Heathkit Q Multipliers and other Q Multipliers |
| 080907tech-002 | 1.09 | Crystal filters vs mechanical filters |
| 080907tech-002 | 6.09 | Magnetofection explained |
| 080907tech-002 | 9.08 | Dick explains TechNet email rules |
| 080907tech-002 | 13.50 | Crystal filters vs mechanical filters revisited |
| 080907tech-002 | 15.16 | MELS EMAIL 01: What is a gravity wave communication system? |
| 080907tech-002 | 21.19 | Gravity is difficult to define |
| 080907tech-002 | 26.53 | WS2N Paul: explains The Ligo Experiment |
| 080907tech-002 | 30.15 | What would happen if our sun became a black hole? |
| 080907tech-002 | 38.07 | Dick explains the strength of a gamma ray burst |
| 080907tech-002 | 42.26 | Is the universe flat or does it have volume? |
| 080907tech-002 | 47.21 | Dick shares when he received an Apollo transmission from the moon |
| 080907tech-002 | 53.45 | MELS EMAIL 02: How do you decide which type of L Network to use? |
| 080907tech-002 | 56.01 | On Google enter "Impedance Matching Network Designer" for the Berkeley Impedance Calculator |
| 080907tech-003 | 0.00 | Different ways to use baluns, variable capacitors, and rotary inductors for a matching network |
| 080907tech-003 | 5.02 | Dick explains resonating and radiating |
| 080907tech-003 | 8.14 | Story of W2BU's knowledge of standing wave ratio and transmission lines |
| 080907tech-003 | 11.48 | Debate of an antenna tuner at the antenna or at the rig |
| 080907tech-003 | 15.01 | Dick: SWR itself on a balanced open wire doesn't create radiation |
| 080907tech-003 | 18.47 | Examining voltage variations between baluns and tuners |
| 080907tech-003 | 23.05 | What happens when the SWR wave reflect back from the antenna |
| 080907tech-003 | 29.05 | Dick: Every antenna has a finite Q |
| 080907tech-003 | 32.51 | Overview of the 4 definitions of Q |
| 080907tech-003 | 35.33 | Differential current utilizing two tuners |
| 080907tech-003 | 41.46 | Is there unpredictability of antenna adjustments one day to the next? |
| 080907tech-003 | 46.30 | KC2QKQ Glenn: Transmitting 100W, the tuners cold, but no on e hears me- is it the radiation angle? |
| 080907tech-003 | 48.46 | Does the earth's magnetic field effect radio waves? |
| 080907tech-003 | 52.07 | Mel and Dick discuss the performance of Mels indoor lop regarding the E and the H field |
| 080907tech-004 | 0.00 | Dick and Glenn discuss cloud bursts, noise blankers, Q multipliers and weak signals in noise |
| 080907tech-004 | 9.36 | Examining the effects of a loop antenna tuning and the compatibility with a Q multiplier |
| 080907tech-004 | 13.40 | Mel shares how busy he is adjusting his indoor loop during nets |
| 080907tech-004 | 18.40 | Is Mel's 270' outside loop and E field, an F field, or an electromagnetic sensing antenna? |
| 080907tech-004 | 21.40 | How narrowband is Mel's indoor loop and how doe's Mel adjust it? |
| 080907tech-004 | 27.19 | Mel shares a lot about his camradio.net 3820Mhz net that is on MWF at 11:30pm |
| 080907tech-004 | 27.50 | Mels shares how he made a 20m transmitting loop |
| 080907tech-004 | 37.08 | Mel: Study the different loops in the ARRL Antenna Book |
| 080907tech-004 | 42.07 | Mel shares his unsuccessful 20m short range experiment with Andy WA2CDL |
September 14, 2008 Show
| 080914tech-001 | 5.13 | KCRA Code and Theory Nets 146.430 pl136.5 Tues and Thurs 8pm info - KB2VDV@arrl.net |
| 080914tech-001 | 6.57 | Discussion the spec and info on the Hurricane Gloria WinCo generator |
| 080914tech-001 | 10.33 | Precautions when operating a generator |
| 080914tech-001 | 17.07 | Why Dick doesn't like using multi-grade oil |
| 080914tech-001 | 26.34 | How do you build a better antenna for XM Radio reception? |
| 080914tech-001 | 33.34 | XM audio frequency properties vs. existing video frequencies |
| 080914tech-001 | 40.34 | Antennas and bandwidth used for XM and Sirius radio |
| 080914tech-001 | 43.44 | Considerations when trying to get satellite signal reception |
| 080914tech-001 | 48.30 | Polarization of satellite signals |
| 080914tech-002 | 0.00 | Cont Polarization of satellite signals |
| 080914tech-002 | 4.23 | Generator specs, standards and regulations |
| 080914tech-002 | 13.29 | The importance of experimenting with XM radio antenna for better reception |
| 080914tech-002 | 19.04 | Examining the satellites that carry Sirius and XM radio and how to get the best reception |
| 080914tech-002 | 24.51 | Dick told "Success has many Fathers" story |
| 080914tech-002 | 29.24 | KC2OES Fred www.orbitron.com good source for satellite tracking software |
| 080914tech-002 | 31.02 | How to protect equipment that don't work well with generators |
| 080914tech-002 | 36.10 | ENG news vans use of generators |
| 080914tech-002 | 42.06 | All about generators and ground fault interrupters (GFIs) |
| 080914tech-002 | 46.58 | Grounding generators |
| 080914tech-002 | 58.40 | Misunderstanding of the reversal of a GFIs |
| 080914tech-003 | 0.00 | Cont Misunderstanding of the reversal of a GFIs |
| 080914tech-003 | 2.16 | Grounding generators revisited |
| 080914tech-003 | 20.06 | More opinions about GFI's |
| 080914tech-003 | 21.52 | Using 220V and 240V GFI breakers |
| 080914tech-003 | 26.07 | SPACE REPORT WITH WS2N Paul: How hurricane Ike effected the ISS |
| 080914tech-003 | 28.46 | Update on the proton and ion smashing ring experiment |
| 080914tech-003 | 30.31 | Use of liquid hydrogen and liquid helium in magnetic rings |
| 080914tech-003 | 39.16 | Concerns of rings causing a black hole |
| 080914tech-003 | 41.26 | Receiving satellite signals during a rainstorm |
| 080914tech-003 | 46.11 | Polarization of satellite signals in different bands |
| 080914tech-003 | 49.54 | How to improve a mag mount antenna signal on a small budget |
| 080914tech-003 | 53.09 | Dick gives quick explanation in dB gain ratios |
| 080914tech-004 | 0.00 | Kent Britain WA5VJB.com good source for ham antennas |
| 080914tech-004 | 10.14 | What is satellite Spot Beam Technology? |
| 080914tech-004 | 15.57 | Signal strength measuring of satellite signals |
| 080914tech-004 | 18.56 | Dick: Not all transponder channels are not programmed the same |
| 080914tech-004 | 28.05 | MELS EMAIL 01: Please explain what's best for CW -a folded dipole, regular dipole or a cage dipole? |
| 080914tech-004 | 37.41 | Broad banding impedance matching and dipoles |
| 080914tech-004 | 42.00 | MELS EMAIL 02: How do I make a loading coil to meet a 40m dipole requirement |
| 080914tech-004 | 49.49 | Radio Amateurs Handbook (Theory section) good formulas for calculating microhenrys through coil turns |
September 21, 2008 Show
| 080921tech-001 | 2.32 | N2EO Rich: Highly recommends the tentec.com Model 1340 CW QRP kit |
| 080921tech-001 | 9.42 | Selling points of the TenTec kits and TenTec products in general |
| 080921tech-001 | 14.40 | Butternut antenna doesn't tune on 40m and 80m with a Yaesu FT450 - why? |
| 080921tech-001 | 23.00 | Dick: Nearly every antenna tuner does not cover all impedances |
| 080921tech-001 | 24.30 | Examines Butternut antenna capacitors and ground plain redials |
| 080921tech-001 | 30.45 | Mel and Dick examine the Butternut antenna counter post kit and the antenna's number of coils |
| 080921tech-001 | 46.10 | KC2QIQ Glen Has 3 VHF beams on his tower with only 1 foot of spacing - are they too close? |
| 080921tech-001 | 56.03 | Dick and Glen discuss the construction of Glenn's tower and the "block and tackle" procedure |
| 080921tech-002 | 0.00 | Cont Dick and Glen discuss the construction of Glenn's tower and the "block and tackle" procedure |
| 080921tech-002 | 4.34 | Kent Britain WA5VJB.com revisited from 080914tech-004 00:00 |
| 080921tech-002 | 9.42 | Where to find cheap rotors for small antennas |
| 080921tech-002 | 12.30 | How to use a rotator to find a repeater location |
| 080921tech-002 | 14.29 | Where to find cheap rotors for small antennas revisited |
| 080921tech-002 | 20.40 | Problem with Comet DP-15 tri-bander with an exploding capacitor |
| 080921tech-002 | 35.02 | Examining the different types of coax lengths used with the DP-15 |
| 080921tech-002 | 38.53 | KB2JXM Gary and Dick examine the myth of matching coax |
| 080921tech-002 | 44.45 | Meter leakage and phasing |
| 080921tech-002 | 49.10 | Comparing the SWR of the shortest coax and the longest coax |
| 080921tech-002 | 56.53 | Reflection coefficient and its effect on VSWR |
| 080921tech-003 | 0.00 | Cont Reflection coefficient and its effect on VSWR |
| 080921tech-003 | 0.31 | Dependable repeaters to use in the Manhattan area |
| 080921tech-003 | 8.10 | KB2JXM Gary gives history of the different coax lengths and antennas used |
| 080921tech-003 | 14.06 | Looking at each capacitor on KB2JXM Gary's antenna |
| 080921tech-003 | 18.10 | Precautions when mounting multiple antennas with a power divider on one mast |
| 080921tech-003 | 22.55 | A look at the schematics of KB2JXM Gary's antennas |
| 080921tech-003 | 27.36 | Resonance and radiation and why they aren't mentions in books |
| 080921tech-003 | 33.16 | The simple rules of thumb amateurs use who make antennas |
| 080921tech-003 | 43.00 | Odd and even antenna multiples and T connectors |
| 080921tech-003 | 47.36 | What really happens when you adjust your antenna tuner |
| 080921tech-003 | 50.13 | When pairing 2 Mirage amplifiers correctly and when its done incorrectly |
| 080921tech-003 | 55.29 | MELS EMAIL 01- What is the K Index and the A Index? |
| 080921tech-004 | 0.00 | Cont MELS EMAIL 01- What is the K Index and the A Index? |
| 080921tech-004 | 7.14 | How sensitive is your antenna and how is it measured |
| 080921tech-004 | 13.27 | www.n0hr.com/radio_propagation.htm good source for understanding HF propagation |
| 080921tech-004 | 14.53 | www.arrl.org/tin/info/K9LA-prop.html good source for understanding A and K Index |
| 080921tech-004 | 17.50 | www.terramagnetoscope.com good source for A and K Index info |
| 080921tech-004 | 20.22 | MELS EMAIL 02: What is a Class D amplifier? |
| 080921tech-004 | 31.00 | Mel: www.monolithic.com good source for Class D amplifiers |
| 080921tech-004 | 31.50 | MELS EMAIL 03: Does the Q of a coil depend on the size and diameter of the wire? |
| 080921tech-004 | 38.20 | How to test for the antenna's Q using bandwidth information |
| 080921tech-004 | 41.24 | Dick: The reason why there is a minimum Q for components, transmitters, receivers etc |
| 080921tech-004 | 42.58 | Using a thermal imaging camera on components and antennas |
| 080921tech-004 | 46.52 | How metal is magnetically removed from a recycling conveyor belt |
| 080921tech-004 | 52.04 | What good specs to find for an antenna |
September 28, 2008 Show
| 080928tech-001 | 1.03 | KC2SYF Mike: Would like opinions on the Kenwood TS-530S he bought used. |
| 080928tech-001 | 15.41 | Discussion on the Kenwood TS-530S antenna tuner |
| 080928tech-001 | 18.23 | Review of the LIMARC repeater operation on Sept. 21 |
| 080928tech-001 | 20.36 | Dick gives overview of amplitude modulation and frequency modulation |
| 080928tech-001 | 26.07 | The difference between amplitude modulation and frequency modulation |
| 080928tech-001 | 29.48 | Dick gives explanation of the Bessell Function |
| 080928tech-001 | 45.20 | Mel simplifies the Bessell Function explanation with an example |
| 080928tech-001 | 47.25 | Deviation rate and modulation index |
| 080928tech-001 | 52.50 | Armstrong and the birth of FM |
| 080928tech-001 | 54.19 | Deviation rate and modulation index revisited |
| 080928tech-001 | 56.70 | NTSC vs FM deviation |
| 080928tech-001 | 58.04 | Overview of DTV's AC3 and audio compression |
| 080928tech-002 | 0.00 | Cont Overview of DTV's AC3 and audio compression |
| 080928tech-002 | 3.40 | How sound is effected if recorded through an iron core filter |
| 080928tech-002 | 5.19 | Audio compression algorithms based on human hearing |
| 080928tech-002 | 9.56 | The trained ear listener vs. audio compression |
| 080928tech-002 | 17.19 | Why does audio on a DVD sound warmer than music on a CD? |
| 080928tech-002 | 19.52 | Measuring dB gain of an HDTV antenna |
| 080928tech-002 | 23.08 | What's more valuable in HDTV reception- gain or bandwidth? |
| 080928tech-002 | 24.15 | Development of active antennas for HDTV reception |
| 080928tech-002 | 28.51 | STA standard allowances for broadcast television stations |
| 080928tech-002 | 32.39 | Determining data points for DTV antenna performance |
| 080928tech-002 | 41.17 | The importance of selectivity and directivity o DTV antennas |
| 080928tech-002 | 48.30 | Popular UHF TV broadcast antennas |
| 080928tech-002 | 49.21 | Examining slot antennas and multipath |
| 080928tech-002 | 57.01 | KC2QIQ Glenn: Explains how he tested his dipole vs. his other antennas |
| 080928tech-003 | 0.00 | KB2DB John: Reviews the Winegard KL420 bowtie antenna |
| 080928tech-003 | 5.04 | Oven liners used to make bowtie antennas |
| 080928tech-003 | 6.17 | TV stations that have conducted "off the air" test to see viewer reaction to the DTV switchover |
| 080928tech-003 | 11.48 | KC2QIQ Glenn shares DTV reception result from his antennas |
| 080928tech-003 | 15.18 | TV stations that have conducted "off the air" test to see DTV switchover reaction revisited |
| 080928tech-003 | 23.10 | AVS Forum on internet good source of DTV reception reports |
| 080928tech-003 | 27.31 | KB7UV Andy: Reviews the damage done by the hurricane that hit Texas |
| 080928tech-003 | 36.48 | The future of the TV industry - growth or cut-backs? |
| 080928tech-003 | 48.20 | Discussion on starting a low power TV station |
| 080928tech-003 | 54.05 | The present state of the economy in the NYC area |
| 080928tech-003 | 56.37 | Possibilities of starting a low power TV station in Endicott NY |
| 080928tech-004 | 0.00 | MELS EMAIL 01: Is there such a thing as a Radon antenna? |
| 080928tech-004 | 3.05 | Overview of Radon |
| 080928tech-004 | 9.17 | Alpha, beta and gamma particles |
| 080928tech-004 | 18.06 | MELS EMAIL 02: Why does a wire beam (rope yagi) need to be set at a 20 degree angle? |
| 080928tech-004 | 28.10 | Measuring the HF radio noise of Jupiter's red eye |
| 080928tech-004 | 33.31 | MELS EMAIL 03: What is the present state and future of Sporadic E openings? |
| 080928tech-004 | 36.40 | WS2N Paul: Ham radio vs. radio astronomy |
| 080928tech-004 | 39.17 | Dick gives a quick overview of Sporadic E |
| 081005tech-001 | 4.50 | N2EO Rich: Problems with Collins/Philips tube 6AZ8 stage |
| 081005tech-001 | 12.01 | Mels shares his experience in replacing ECG Collins tubes |
| 081005tech-001 | 16.38 | Mel explains the ECG tube series |
| 081005tech-001 | 21.23 | Mel corrects his answer to the resistor repairs to the 6AZ8 tube |
| 081005tech-001 | 29.26 | Possible postings of a Philips ALC bulletin to the Collins Collectors Association website |
| 081005tech-002 | 0.00 | Cont Possible postings of a Philips ALC bulletin to the Collins Collectors Association website |
| 081005tech-002 | 7.10 | Mel gives remote cut off specs of Collins tubes |
| 081005tech-002 | 8.10 | The availability of the Drake replacement tubes |
| 081005tech-002 | 11.27 | SPACE REPORT WITH WS2N Paul: The Hubble repair mission update and the latest Phoenix news |
| 081005tech-002 | 28.41 | Analyzing the power of the particle accelerator |
| 081005tech-002 | 30.22 | How the particle generator works |
| 081005tech-002 | 33.55 | Review of The Science Channel "Beyond Tomorrow" show on the particle generator |
| 081005tech-002 | 34.50 | Looking at Brookhaven's AGF and discussion on super ducting material |
| 081005tech-002 | 37.56 | Dick explains inductive kickback |
| 081005tech-002 | 44.51 | The size of the particle generator rings |
| 081005tech-002 | 46.30 | Electron volts in an electric beam |
| 081005tech-002 | 51.18 | Electron clouds and molecules |
| 081005tech-002 | 54.55 | The objectives of using a particle generator to understand the properties of molecules |
| 081005tech-003 | 0.00 | Cont The objectives of using a particle generator to understand the properties of molecules |
| 081005tech-003 | 4.30 | Computer hacker breaks into the particle generators computer |
| 081005tech-003 | 5.32 | WS2N Paul: explains the God Particle |
| 081005tech-003 | 8.03 | What answers will we find using a particle generator ( i.e.. Ionization) |
| 081005tech-003 | 17.49 | Dick explains the Multipactor (Multi impact effect) |
| 081005tech-003 | 21.51 | Why does ignition noise get louder when you go faster? |
| 081005tech-003 | 22.50 | What is anti hydrogen? |
| 081005tech-003 | 28.34 | Can you hold antimatter in a magnetic chamber? |
| 081005tech-003 | 29.13 | How the sun processes matter |
| 081005tech-003 | 34.55 | Positron (PET) machine technology |
| 081005tech-003 | 37.50 | What is temperature? |
| 081005tech-003 | 41.51 | RF energy in relation to photons. |
| 081005tech-003 | 44.00 | Dick shares an experiment he did with digitally compressed RF signal reception processing |
| 081005tech-003 | 49.49 | What makes optical fluorescents? |
| 081005tech-004 | 0.00 | Cont What makes optical fluorescents? |
| 081005tech-004 | 1.03 | The future of light emitting diodes and what causes the aurora borealis? |
| 081005tech-004 | 3.58 | Mel: If electrons are more free to move in a wire is the wire a better conductor? |
| 081005tech-004 | 8.04 | What makes a good conductor and what makes a good insulator? |
| 081005tech-004 | 16.30 | Conductivity of solder, gold and silver |
| 081005tech-004 | 23.11 | What happens when you compress air molecules? |
| 081005tech-004 | 32.38 | MELS EMAIL 01: What HF antenna do you use when you in an apartment? |
| 081005tech-004 | 47.56 | WA5VJB.com good source for building a coat hanger yagi |
| 081005tech-004 | 54.55 | Possibilities of using a Hustler HF mobile antenna for an apartment antenna |
| 081005tech-005 | 0.00 | Cont Possibilities of using a Hustler HF mobile antenna for an apartment antenna |
| 081005tech-005 | 8.54 | Concerns oer RF exposure when using an inside antenna |
| 081005tech-005 | 9.37 | Advantages of using a remote tuner at the antenna |
| 081005tech-005 | 15.29 | Mel shares his experience with his Hustler whip antenna |
| 081005tech-005 | 21.34 | WB2BXO Frank: Shares his early days of his QSOs |
October 12, 2008 Show
| 081012tech-001 | 3.01 | Overview of ground reflection and the above ground antenna |
| 081012tech-001 | 12.40 | HF ground reflection vs. VHF/UHF ground reflection |
| 081012tech-001 | 19.50 | Mel discusses take off angle over salt water |
| 081012tech-001 | 24.30 | Dick urges hams to make and test multiple antennas for Faraday rotation |
| 081012tech-001 | 28.15 | Examining apartment antenna patterns |
| 081012tech-001 | 38.03 | KC2OES Fred: Would like to homebrew the feed point for a Mosley CL33M 10m 12m 15m tribander |
| 081012tech-001 | 53.09 | Testing the director of the Mosley CL33M |
| 081012tech-002 | 0.00 | Cont Testing the director of the Mosley CL33M |
| 081012tech-002 | 4.11 | Suspending the Mosley CL33M by a fiberglass mast |
| 081012tech-002 | 8.11 | WA2CDL Andy: Explains a "Q Match" |
| 081012tech-002 | 18.40 | How to measure a jewel carries out of a tube at a given time |
| 081012tech-002 | 26.56 | MELS EMAIL 01: Share with the TechNet experience working with SMB (Surface Mount Boards) |
| 081012tech-002 | 38.09 | The difficulty in soldering and handling surface mount components |
| 081012tech-002 | 40.17 | Using lead free, high temperature solder with surface mount components |
| 081012tech-002 | 50.51 | The technology of a cellphone surface mount components |
| 081012tech-002 | 52.44 | Mel shares how he created a "third hand" instrument to work with surface mount components |
| 081012tech-002 | 54.56 | Special tools to use with surface mount components |
| 081012tech-002 | 56.47 | Mel gives industry update on the lead-free solder green movement |
| 081012tech-002 | 59.14 | The energy density of electric cars vs. gas powered cars |
| 081012tech-003 | 1.20 | New innovations in fuel cell and natural gas cars |
| 081012tech-003 | 3.36 | All about zinc air batteries |
| 081012tech-003 | 12.46 | MELS EMAIL 02: What is Tran conductance and how do you measure it? |
| 081012tech-003 | 26.52 | Mutual conductance of a vacuum tube and how its tested |
| 081012tech-003 | 33.08 | Dick: "There are tube testers and there are tube testers" |
| 081012tech-003 | 35.12 | Examining tube filament circuits and how they are tested |
| 081012tech-003 | 39.19 | Mel: How better tube testers work |
| 081012tech-003 | 48.05 | Why measure the voltage first re: vacuum tubes |
| 081012tech-003 | 52.50 | When tubes are better to use than solid state |
| 081012tech-003 | 57.01 | The debate over long delay (>24 hour) echoes on 3.500Mhz claimed by JA8DNV |
| 081012tech-004 | 0.00 | Cont The debate over long delay (>24 hour) echoes on 3.500Mhz claimed by JA8DNV |
| 081012tech-004 | 15.35 | Reviewing the Betty and Barney Hill alien abduction case |
| 081012tech-004 | 18.34 | Scrutinizing JA8DNV's LDE research data |
October 19, 2008 Show
| 081019tech-001 | 3.19 | Reviewing the Technet discussion from 080720 #003 on maintaining oil burners |
| 081019tech-001 | 4.50 | Sid Harvey store chain good source for book on maintaining oil burners and supplies |
| 081019tech-001 | 8.49 | Oil burner valves |
| 081019tech-001 | 19.31 | Title for Sid Harvey's book is "The Complete Guide to Residential Oil Heating (PT #665) |
| 081019tech-001 | 24.23 | Air Heating Air/Oil Mixture |
| 081019tech-001 | 28.36 | The importance of a delay turn-on switch |
| 081019tech-001 | 31.25 | Pressure gauges for oil burners |
| 081019tech-001 | 40.00 | Oil burner circulation pumps |
| 081019tech-001 | 56.50 | Dick gives a list of ham that participated in the 080720 #003 oil burner discussion |
| 081019tech-001 | 58.08 | Hot Water and circulation pumps |
| 081019tech-002 | 0.00 | Cont Hot Water and circulation pumps |
| 081019tech-002 | 4.14 | Oil Heater temperature sensors |
| 081019tech-002 | 8.22 | How an oil heater pump works at different temperatures |
| 081019tech-002 | 15.27 | Boiler coils at different temperatures |
| 081019tech-002 | 19.03 | Efficiency vs burning too much oil |
| 081019tech-002 | 19.03 | On/Off operation of the circulator pump and aqua stat |
| 081019tech-002 | 25.44 | KE2EJ Eric: The furnace has to be thought of as two independent systems |
| 081019tech-002 | 35.39 | Cast iron radiators vs new base board radiators |
| 081019tech-002 | 47.41 | How to measure transmitter noise for spectral purity |
| 081019tech-003 | 0.00 | Cont How to measure transmitter noise for spectral purity |
| 081019tech-003 | 1.03 | Automatic functions on a Network Analyzer is not the best for some tests |
| 081019tech-003 | 8.06 | Problem: HF CW signal heard w/ dipole and partial power but not heard on full power w/vertical |
| 081019tech-003 | 15.43 | Dick: QST 10/08 Doctor Is In article has similar question to 081019tech-003 8:06's question |
| 081019tech-003 | 19.48 | Dick examines contributing factors to the antenna question at 081019tech-003 8:06 |
| 081019tech-003 | 21.10 | Mel gives similar situations to the antenna question at 081019tech-003 8:06 |
| 081019tech-003 | 24.25 | WB2HWW Howie: Explains how the Amtron end fed vertical behaves with an antenna tuner |
| 081019tech-003 | 26.41 | N2EO Rich: Needs more info on transconductance formulas for vacuum tubes |
| 081019tech-003 | 36.01 | N2EO Rich: Different brands of industry tubes and the consistency of quality (ie Sylvania, RCA Goldline) |
| 081019tech-003 | 55.08 | Trying to identify 6AZ8 tubes when ordering from Radiodaze.com |
| 081019tech-003 | 56.08 | Adding a resistor to certain Collins tubes |
| 081019tech-003 | 59.24 | Tubes that are used by audiophiles |
| 081019tech-004 | 0.00 | Cont Tubes that are used by audiophiles |
| 081019tech-004 | 0.28 | The manufacturing process of a vacuum tube |
| 081019tech-004 | 3.43 | Collins A1 Type amplifier tubes examined |
| 081019tech-004 | 6.50 | What a booster transformer does |
| 081019tech-004 | 12.04 | Icom 275 and 475 series flux problems during production |
| 081019tech-004 | 13.24 | What is a gun hammer? |
| 081019tech-004 | 15.16 | Mel and Dick look back at their families' first TV sets |
| 081019tech-004 | 19.56 | Collins rigs that were used in wartime |
| 081019tech-004 | 27.00 | MELS EMAIL 01: Can I replace a bottom section of a Hustler mobile antenna with a copper pipe? |
| 081019tech-004 | 41.35 | MELS EMAIL 02: Does a larger coil for a mobile antenna result in a higher Q? |
| 081102tech-001 | Wiring multiple sources to one speaker | |
| Motorola Saber mods | ||
| batlabs.com | ||
| 081102tech-002 | Yagi directors and reflectors | |
| Coils and grid dip meters | ||
| Fractal antennas | ||
| 081102tech-003 | Cubical quad yagis | |
| Yagis and SWR | ||
| NYC Marathon review | ||
| 081102tech-004 | Elekraft kits | |
| Satellite work and Circular polarization | ||
| The moon and Dxing |
November 9, 2008 Show
| 081109tech-001 | Intermodulation on 2m | |
| Overload from repeaters | ||
| Pre-amps and cavity filters | ||
| 081109tech-002 | Band switching and switching | |
| RF filters | ||
| Clegg FM-278 and the KLM E70 | ||
| Dx QSOs on 70cm | ||
| Raysonic tubes | ||
| Oscilloscope displays | ||
| Pan adapters | ||
| Discarding cathode ray tubes | ||
| The Rosenfeld Detector | ||
| 3rd generation DTV equipment | ||
| Empire State Building DX transmitting | ||
| 081109tech-003 | DTV displays | |
| WiFi antennas and routers | ||
| WiFi hijacking | ||
| MIMO technology | ||
| WiFi antenna mania | ||
| WiFi security | ||
| Mac address filtering | ||
| 081109tech-004 | Internet security web sites | |
| Technet Op-amp update | ||
| Op-amp books | ||
| Analog Circuits | ||
| 7N7 triode tubes | ||
| Digital Signal Processing | ||
| Over sampling |
November 16, 2008 Show
| 081116tech-001 | Problems with switching transformers | |
| Flammable wall warts | ||
| How to contact Underwriters Laboratory | ||
| Problems with auto antenna tuners | ||
| Replacing Kenwood relays | ||
| Internet line-loss calculator | ||
| 081116tech-002 | Current and voltage-fed baluns | |
| Common load chokes | ||
| Turriod winding | ||
| Full vertical bottom-fed dipoles | ||
| Setting radio-controlled wrist watches | ||
| 081116tech-003 | G5RV angles and patterns | |
| Multiple dipole phasing | ||
| Space Report | ||
| Antenna array designs by Kraus | ||
| What is a Joul? | ||
| 081116tech-004 | Defining a Joul in many different ways |
November 23, 2008 Show
| 081123tech-001 | Finding knobs for Drake rigs | |
| Fixing towers that lean | ||
| On-line catalogs for knobs | ||
| The 26-plus different types of ham radio | ||
| Tuning into a dummy load | ||
| 081123tech-002 | 10Ghz wave guides | |
| Changing TV broadcast antennas at The Empire State Building | ||
| The Broadcasting Engineering Education report | ||
| 081123tech-003 | What is a Newton? | |
| The US against the metric system | ||
| Cassini interviews on NASA select | ||
| Thinking Physics by Louis Epstein | ||
| Wear you car seats! | ||
| 081123tech-004 | What is a Crudoject filter? | |
| The 2000 ohm headset | ||
| How do you test a balun? |
November 30, 2008 Show
| 081130tech-001 | What goes on in a neon bulb | |
| The 2 balloon 1 air pressure valve puzzle by Dick | ||
| Different uses of air pressure | ||
| Digital transmission sampling and transport streams | ||
| 081130tech-002 | SPACE REPORT w/WS2N Saturn's and Jupiter's moons/ ISS and shuttle update | |
| Fixing a Bird Watt Meter slug | ||
| Universal thermostat oven controls | ||
| Considerations when switching from oil to gas | ||
| 081130tech-003 | Bird Watt Meter slugs | |
| Cost of gas vs. oil | ||
| 720 to 1081 DTV transmitting | ||
| MPEG compression | ||
| Alignment checking of home brew repeater duplexers | ||
| Fixing a 1972 4CX250B amp | ||
| 081130tech-004 | Filament voltage and the life of a tube | |
| Tube screen decipation | ||
| Testing a directional coupler antenna by W1NTH and W1SL |
| 081207tech-001 | Datron 2100 Manpack radio for first rig? | |
| Stealth antenna ideas for apartments | ||
| DTV box sensitivity and multipath | ||
| 081207tech-002 | Comparing DTV converter boxes | |
| antennaweb.org shows available digital TV signals in your area | ||
| Winegard vs Zenith DTV converter boxes | ||
| The future of VHF stations after the DTV conversion | ||
| Using preamps for DTV reception | ||
| Orthogonal Frequency Digital Multiplex (OFDM) | ||
| The "new" digital UHF TV station | ||
| Is it possible to coil an 80m dipole to conserve space? | ||
| The great debate over the Resonating and Radiating of an antenna system | ||
| 081207tech-003 | Resonance in an LC network | |
| 081207tech-004 | Reciprocity and antenna length | |
| Optimal antenna length for 160m, 80m, and 40m | ||
| Career description of an RF Engineer | ||
| So you want to be an RF Engineer? | ||
| Coat hanger mobile antennas | ||
| MELS EMAIL: All about crystal, mechanical and DSP filters (continues to 081214tech-004) |
December 14, 2008 Show
| 081214tech-001 | Installing an air conditioner in your shack | |
| The relative cost between oil and gas | ||
| The rise and fall time of a component | ||
| The four definitions of Q | ||
| 081214tech-002 | RF ID tags and GPSing your pet | |
| HDTV vs. DTV availability | ||
| How to retransmit DTV around your house | ||
| What will be on the UHF stations after the DTV conversion? | ||
| DTV conversion boxes that run off of batteries | ||
| Which TV stations are presently broadcasting digital signals | ||
| 081214tech-003 | DTV transition effects on HTS with TV audio | |
| The future of the VHF/UHF frequency range | ||
| DTV amplifier power | ||
| Digital peak envelope power | ||
| DTV modulation and demodulation | ||
| The latest in the Jan 2009 QST magazine | ||
| THE SPACE REPORT | ||
| Is there a DTV version of TVI? | ||
| 081214tech-004 | MELS EMAIL: Continuing discussion with crystal, mechanical and DSP filters (Started at 081207tech-004) |
December 21, 2008 Show
| 081221tech-001 | The DTV transmission signal | |
| DTV impulse noise interference | ||
| Antennas to use for DTV | ||
| DTV bit error rate indicators | ||
| 081221tech-002 | Cellphone G3 defined | |
| Using a spectrum analyzer to look at a DTV signal | ||
| Mallory inductance tuner equivalent for DTV | ||
| DTV lip-syncing problems | ||
| DTV and politics | ||
| Hauppauge WinTV for your computer | ||
| 081221tech-003 | DTV audio and video packet synchronization | |
| Analog ghosting now could may be a fatal DTV reception signal later | ||
| DTV equalizers and multipath | ||
| Will DTV be better than analog TV? | ||
| Dick: Hams should stay low until the DTV conversion is over | ||
| Humans and the full duplex unit | ||
| Mel: Why not leave some analog tv signals? | ||
| 081221tech-004 | Buying used rigs on Ebay with credit cards vs. Paypal | |
| SPACE REPORT with WS2N Biospheres / Government spending and NASA | ||
| US using alternative energy and being energy independent |
| 081228tech-001 | What will be on the VHF TV channels after the DTV conversion? | |
| Multipath and its effect on DTV reception | ||
| How to figure the gain possibility of a beam antenna | ||
| What does channel 4.1, channel 4.2, and channel 4.3 mean? | ||
| The DTV converter box scan function - what does it do? | ||
| US government raises funds by auctioning off frequency space | ||
| Signal to ratio tests done on a DTV converter boxes | ||
| 081228tech-002 | Digital impulse noise interference | |
| WA5VJB bio, website, and articles written for CQ Magazine | ||
| DTV antennas and pre amps | ||
| Can you manually tune a DTV converter box? | ||
| 081228tech-003 | Yagi experiments with UHF TV stations | |
| DTV performance in a mobile environment | ||
| Receiving simultaneous DTV signals at the same frequency | ||
| Mel: Your conventional TV antenna is still usable for DTV | ||
| People having difficulty getting PBS WNET ch 13 (ch. 61) and other stations | ||
| DTV signal time delay | ||
| MELS EMAIL: Walt Maxwell's articles on arrl.org has similar info like Kraus' | ||
| EI&Z Lesson: What is the relationship of E, I and Z? | ||
| 081228tech-004 | The "2 RF generators connected to each other" brain teaser from J/Feb 2003 QEX | |
| Dick's 1/2 wave dipole in free space question he asked at a IEEE meeting | ||
| EI&Z Lesson: What is the relationship of E, I, and Z? revisited |