Now you can listen to the Technet that best suites your needs!

For the "Power User": Before, you had to flip back and forth between the "Air date/reel page" and this page
"The Searchable/Index page". Now you can activate each reel right here - on the same page as the index!

To play a reel on this page:
1. Just click on the bold, underlined link reel, which is always an orange box in the Audio File column.
(i.e. 060910tech-001 is the first entry in our chart) This means: "This is the Sept. 10, 2006 show, reel number 1" Just click the link!

2. To click reel 2 of the Sept 10, 2006 Show, move down to the next orange box in the same Audio File column which is:
060910tech-002 (which is reel 2 of the Sept, 10, 2006 show).

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
then Find On This Page (CTL-F). A dialog box appears- just type in a term that matches your topic, then press return.
The first occurance of that word is shown on the screen highlighted. To find the next occurance of your term press the "Next" button.

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
Google-like search feature for




September 10, 2006 Show

Audio File Time Topic
060910tech-001 1.00 Placing ferrite cores around a DC line
060910tech-001 9.45 Overvoltage protection circuits in power supplies
060910tech-001 13.50 The workings of the troublesome KLM Swan 2m Yagi antenna
060910tech-001 38.50 Icom IC551 sideband problem
060910tech-001 40.20 LMR Ultraflex connectors
060910tech-002 0.00 The drawbacks of crimping connectors
060910tech-002 10.00 Pasternack Catalog of connectors
060910tech-002 15.00 Vanguard connectors
060910tech-002 19.20 Cavity filters on 432Mhz
060910tech-002 20.42 GasFet pre-amps
060910tech-002 28.00 Water inside connectors
060910tech-002 32.00 SPACE REPORT - The STS-115 lighting strike
060910tech-002 42.19 "Deorbiting" 7 tons of hardware
060910tech-002 46.30 Hubble may be saved
060910tech-002 54.22 Briarcliff College Hamfest review
060910tech-003 0.00 Push-Pull Oscilloscopes
060910tech-003 2.00 Sine waves
060910tech-003 2.30 Using a loudspeaker as a microphone
060910tech-003 12.00 Is it possible to damage an oscilloscope?
060910tech-003 15.10 Filament Transformers
060910tech-003 20.00 An oscilloscope's AC/DC coupled mode
060910tech-003 27.00 Viewing radio waves on an oscilloscope
060910tech-003 32.00 Fluorescent bulb behavior and an oscilloscope
060910tech-003 36.00 Voltage Arcs


September 24, 2006 Show

Audio File Time Topic
060924tech-001 2.59 PL259 with SSB cable
060924tech-001 9.40 Using Heliax cable
060924tech-001 12.30 3/4" cable TV hardline the best?
060924tech-001 18.00 The Pros and Cons of Crimping
060924tech-001 21.41 9913 specifications
060924tech-001 23.00 Rubber will breathe water
060924tech-001 25.00 How to properly ask for leftover cable in a stockyard
060924tech-001 31.00 Using Freon in cable
060924tech-001 35.02 HiSat satellite
060924tech-001 37.55 "Satellites with "Mologria" (Russian town) Orbit
060924tech-001 43.22 French satellite above the geo belt
060924tech-002 0.00 Continued - AMSAT update
060924tech-002 1.30 Types of Orbits
060924tech-002 7.00 Apogee velocity
060924tech-002 10.00 Misconceptions of the thickness of earth's atmosphere
060924tech-002 11.00 Misconceptions of the scale of our solar system
060924tech-002 14.03 J Track website
060924tech-002 15.05 Internet speed of fiber optics
060924tech-002 17.09 Are TV Aerials still being used?
060924tech-002 20.00 Jericho TV Show morse code section
060924tech-002 26.00 Reality TV shows
060924tech-002 27.02 Water in coax cable continued
060924tech-002 28.03 Measuring insertion loss
060924tech-002 30.09 Air filled and Foam filled cable used in keeping water out
060924tech-002 40.09 Using putty and monkey snot in connectors and cables
060924tech-002 42.30 Polyethylene shrink tubing
060924tech-002 47.11 Granger and Raycam heatguns for shrink tubing
060924tech-002 48.00 Opinions on using hairdryers
060924tech-002 49.10 Using heatguns at the top of towers
060924tech-002 54.10 Heattape and Gutter safety
060924tech-002 57.09 Digital TV Standards
060924tech-003 0.00 Continued - Digital TV Standards
060924tech-003 1.30 Raychem heating tape for roofs and gutters
060924tech-003 6.45 Earth screw anchors
060924tech-003 8.20 Mosley beam and end wire antennas
060924tech-003 12.00 "Antennas" by Krauss McGraw Hill
060924tech-003 12.15 "The Infitessible Dipole" chapter
060924tech-003 13.00 Open wire line myths
060924tech-003 15.00 Krauss book discussed more
060924tech-003 15.20 Insertion loss, gain, and capture area
060924tech-003 23.15 SPACE REPORT - The International Space Station (ISS)
060924tech-003 27.00 250k pounds to disassemble someday
060924tech-003 37.20 Space station gyros
060924tech-003 39.00 Woman civilian astronaut
060924tech-003 42.10 Space sickness
060924tech-003 46.48 Soviet satellite lands in Canada
060924tech-003 49.50 The Strength of Earth's Orbit
060924tech-004 0.00 Continued - The Strength of Earth's Orbit
060924tech-004 2.30 Full Wave Loop antennas
060924tech-004 6.00 Full Wave Loop performance vs Dipole performance


October 1, 2006 Show

Audio File Time Topic
061001tech-001 3.00 Loop Antenna and Feedline Article
061001tech-001 4.15 Tuning an 80m antenna for optimum resonance
061001tech-001 12.00 Testing an IR remote with an AM radio
061001tech-001 20.00 Tone communications of bats
061001tech-001 22.00 Scribbs device and magnetic waves
061001tech-001 25.00 CAT scans and the human brain
061001tech-001 27.08 Info gleaned from a DVD recorder user's manual
061001tech-001 31.33 Physical sensations from MRI and Doppler effects in hospital
061001tech-001 39.10 Scanning magnetic fields
061001tech-001 41.50 Japanese standards for remote control emissions
061001tech-001 42.02 Hydrogen atom spin rates
061001tech-001 45.00 Radio astronomy polarization effects
061001tech-001 47.12 Resolution of an Optical microscope
061001tech-001 53.00 Recap of the IR remote and AM radio discussion
061001tech-001 54.00 Open current diodes
061001tech-002 4.00 Radio Shack's phosphorous strip item
061001tech-002 5.14 Sony camcorder Infrared "See-through" feature
061001tech-002 6.00 Airport "See-Through Clothes" camera
061001tech-002 7.20 MCM Infared tester
061001tech-002 8.30 TV infrared receivers and pulse widths
061001tech-002 9.06 The 6m supersignal from Texas with a 1800 foot tower
061001tech-002 14.00 Dxing with the WTC antennas
061001tech-002 15.29 Poor phase testing of a Dallas TV station antenna
061001tech-002 17.00 Stamford Univ. Moonbounce Dish
061001tech-002 18.34 Dallas TV antenna story continued
061001tech-002 23.45 Radar Project using regular ham equipment
061001tech-002 27.45 Dick's new car and the value of using the Blue Book
061001tech-002 32.00 Loop Antennas and W8TV measurements
061001tech-002 33.20 John Krauss' Antenna Book
061001tech-002 35.40 Feeding watts through the TOKO
061001tech-002 37.00 Feeding coax for loop antenna tuning
061001tech-002 46.30 Walt Maxwell and using coaxial stubs and the Smith Chart
061001tech-002 51.00 Load impedance on the Smith Chart
061001tech-002 59.00 Built-in Normalizers
061001tech-003 0.00 "Resistive 2 to 1" Examined
061001tech-003 3.04 Measuring impedance with a Network Analyzer
061001tech-003 8.00 Using "R + Jx"; converting from rectangular form to polar
061001tech-003 13.37 Hewlett Packard HP28S calculator
061001tech-003 18.34 Advantages of using a Smith Chart
061001tech-003 25.00 Review of the popular the Maxwell and Krauss (3rd ed) antenna testing books
061001tech-003 29.32 Source antenna close to ground
061001tech-003 30.00 Dr. Dick Turin W2IMU report in the November 1974 QST - Now hidden in the ARRL Handbook Propagation Chapter
061001tech-003 32.00 Edwards Airforce Base antenna testing chamber, and 2 other $10M chambers
061001tech-003 35.00 Dick's car stories
061001tech-003 45.00 New patrol car cameras that "read" license plates
061001tech-003 48.09 SPACE REPORT
061001tech-003 50.00 Faults in the teaching of Electro Magnetic Theory in college
061001tech-003 56.10 10m repeater ground waves
061001tech-003 58.11 1 over the square root of frequency
061001tech-004 0.00 Poor state of wireless engineering courses offered at schools
061001tech-004 4.20 Cavity Resonator
061001tech-004 12.10 Mareno Microwave Principles book
061001tech-004 13.00 Nano ohms short circuits
061001tech-004 18.12 Milliwatts transmitted through SMA connector in Smithtown N2LIV on 10Ghz
061001tech-004 24.30 70 ohm vs. 50 ohm cable in making a short circuit
061001tech-004 27.00 Silver-electro Plating
061001tech-004 31.09 T-Connection 50 ohm 1/10th dB of loss
061001tech-004 42.00 Repropricity at short circuits
061001tech-004 49.10 Third harmonics and cube crystals


October 8, 2006 Show

Audio File Time Topic
061008tech-001 3.10 Neighbor with Dish Network complains of interference
061008tech-001 6.30 Lithium battery in Dish Network Unit the cause of interference?
061008tech-001 19.00 Recap of the IR remote and AM radio discussion from previous show
061008tech-001 21.00 Dish Network box needs to be rebooted stop the interference?
061008tech-001 23.50 Box shielding
061008tech-001 25.01 Echostar customer service
061008tech-001 27.45 The changing definition of the word "microwave"
061008tech-001 30.10 Sizes of microwave surface mount components
061008tech-001 32.00 Microwaves traveling through waveguide
061008tech-001 35.10 All about waveguide
061008tech-001 39.20 Different types of waveguides
061008tech-001 42.00 Spark Gap transmitter history
061008tech-001 43.16 14-gauge wire and RF energy skin effect
061008tech-001 46.09 Waveguide switches
061008tech-001 47.11 Remcore switches and the Voice of America
061008tech-001 49.43 Beware of cable guys
061008tech-001 51.26 Wind area of aluminum tubing
061008tech-002 0.00 Continued - Wind area of aluminum tubing
061008tech-002 1.30 TIA-RS222-F specifications
061008tech-002 2.46 Log periodics
061008tech-002 4.50 Antennas must resonate first then radiate
061008tech-002 6.00 Log periodics continued
061008tech-002 10.00 SPACE REPORT
061008tech-002 11.50 Mars Express photos
061008tech-002 13.00 Mar's atmosphere
061008tech-002 13.20 Mars Laboratory
061008tech-002 13.55 Saturn's moon Titan
061008tech-002 15.30 Methane lake photos
061008tech-002 16.30 Life expectancy of these rovers and satellites
061008tech-002 20.00 Unmanned spacecraft more efficient tha manned spacecraft is emotional issue
061008tech-002 21.30 EH antenna article
061008tech-002 23.00 TechNet correspondence guidelines
061008tech-002 27.09 Madrid Spain deep space antenna broken
061008tech-002 29.02 Back up dishes
061008tech-002 30.00 Parascope antenna systems
061008tech-002 34.00 Combo vertical/horizontal antenna experiment - diversified receiver system
061008tech-002 37.04 EH antenna continued
061008tech-002 41.00 Hostile response to Dick's article promoting unmanned space space missions
061008tech-002 44.45 Smith Chart websites and the Black Magic Design download
061008tech-002 45.25 Dick's Antenna Patent for the ham bands
061008tech-002 50.00 Skills of good writing
061008tech-002 54.00 Smith Charts continued
061008tech-002 55.15 downloads
061008tech-003 0.00 Smith Charts and downloads continued
061008tech-003 2.00 What is a network analyzer?
061008tech-003 4.30 Ansoft designer
061008tech-003 5.45 Microwave office
061008tech-003 6.14 HFSS software
061008tech-003 9.30 Web search engine proficiency
061008tech-003 12.12 Modeling programs
061008tech-003 13.35 Building models
061008tech-003 16.45 Using a loop on 30m
061008tech-003 19.12 Measuring a 600 ohm line
061008tech-003 32.02 MFJ W9INN Balun Box
061008tech-003 34.00 Smith Chart continued
061008tech-003 37.29 Working the 600 meter band with a 42' vertical
061008tech-003 46.06 EH Antenna continued
061008tech-003 49.10 Where is George Fox?
061008tech-003 51.00 Voice of America switch
061008tech-003 53.45 Port Jefferson High School ARC remembered
061008tech-003 57.27 Open circuit stub continued


October 15, 2006 Show

Audio File Time Topic
061015tech-001 1.58 FCC revises ham bands
061015tech-001 12.00 80m band revision opinions
061015tech-001 13.02 Brooklyn County - high desire for county hunters
061015tech-001 18.36 Dick's first contact on 80m
061015tech-001 20.15 80m history and the best time for dxing on 80m
061015tech-001 27.00 D-Layer Absorption
061015tech-001 29.01 Dick's first transmitter ; a 2 tube transmitter
061015tech-001 31.00 Mel's first rig
061015tech-001 34.40 Andy's first rig
061015tech-001 39.02 Mosley TA33 antenna and its color-coded traps
061015tech-001 47.08 Yagi's reflection and radiation
061015tech-001 49.30 Horizontal vs vertical polarization
061015tech-002 0.00 Directive Systems 102 element Yagi
061015tech-002 1.30 National shortwave radio
061015tech-002 3.03 Listening to Aurora reflections
061015tech-002 4.30 Listening to Doppler shifts
061015tech-002 5.10 Globe M303 SW transmitter
061015tech-002 7.11 Ebay selling tips for hams
061015tech-002 12.10 6m dipole placement near concrete buildings
061015tech-002 19.30 Advantages of having a tower
061015tech-002 22.09 Possible RF interference next to railroad tracks?
061015tech-002 24.20 Lamb Noise Blanker
061015tech-002 25.01 Montauk radar RF interference
061015tech-002 26.15 Protection from lighting
061015tech-002 26.49 Myths regarding lightning hits
061015tech-002 29.02 When lightning strikes your town's power grid
061015tech-002 31.30 When house plumbing becomes a ground
061015tech-002 38.22 Wearing rubber gloves while working on pipes
061015tech-002 41.45 Stories of being struck by lightning
061015tech-002 45.51 Copper theft
061015tech-002 48.00 Howling sounds prior to thunderstorms
061015tech-002 49.00 Lightning pins and ground rods
061015tech-002 54.02 Removing a negative feed from a power supply
061015tech-002 55.00 2.4 Ghz amateur band
061015tech-002 56.03 802.11b card and a yagi - is it allowed?
061015tech-003 0.00 Continued - FCC regulations for the 2.4Ghz ham band
061015tech-003 4.00 Linear polarized antenna
061015tech-003 10.00 Loop antenna and balun topic continued from last net
061015tech-003 13.04 Using matching baluns or use a noise bridge?
061015tech-003 17.26 Advantages of using a noise bridges and band-pass filters
061015tech-003 20.55 Expanded Scale Smith Chart vs. using an Adobe Acrobat .pdf version
061015tech-003 22.11 Using a SWL meter power field strength meter out of band
061015tech-003 26.04 RF energy from a microwave oven?
061015tech-003 27.22 Building a 6m loop antenna


October 29, 2006 Show

Audio File Time Topic
061029tech-001 0.00 Handheld antenna analyzers
061029tech-001 1.34 Using a Smith Chart and a compass
061029tech-001 3.30 Overview of a 50 ohm line
061029tech-001 6.30 VSWR, the unbalanced transmission and its RF energy
061029tech-001 9.13 Voltage reflection ratio
061029tech-001 10.09 The 4 factors that determine how well an antenna radiates
061029tech-001 16.55 IEEE definition of antenna loss and gain
061029tech-001 17.32 Shortcomings of engineering schools
061029tech-001 20.45 Collinear vertical ground plain radials and gain
061029tech-002 0.00 Resonating radials and grandplanes
061029tech-002 4.01 Tilting of radials
061029tech-002 8.30 Coils on radials
061029tech-002 11.40 SWR and gain are not related
061029tech-002 13.20 Balun device above vs below the radials
061029tech-002 14.45 A balanced radiating system
061029tech-002 19.31 Is an All-Band vertical possible to make?
061029tech-002 20.15 Fire escape antennas
061029tech-002 22.30 Gap-type antennas
061029tech-002 23.30 SWR and gain are not related continued
061029tech-002 25.46 VSWR readings can be misleading
061029tech-002 31.05 Are apartment railings good grounding?
061029tech-002 36.04 1/2 wave radiators and railing antennas
061029tech-002 40.45 Crushcraft R6000 on PVC pole 10' above ground
061029tech-002 41.25 PVC vs galvanized steel groundmass
061029tech-002 44.27 SMITH CHART LESSON #1
061029tech-002 48.35 Smith Chart exercise begins with a 3.1 SWR
061029tech-003 0.00 Smith Chart exercise continued
061029tech-003 2.30 Smith Chart horizontal axis
061029tech-003 5.40 Handheld antenna analyzers are not as accurate as you think
061029tech-003 11.27 AEA's VSWR disclaimer
061029tech-003 12.50 How handheld antenna analyzers are really made
061029tech-003 13.58 Using 2 MFJ269s with a -30dB reading difference between the two
061029tech-003 19.30 The value of calibration kits
061029tech-003 24.39 Different placements of the SWR may yield different readings
061029tech-003 30.41 Voltage Control Oscillators
061029tech-003 31.40 High-end vs low-end handhelds
061029tech-003 32.15 The birth of the Network Analyzer
061029tech-003 35.51 Return loss measurements
061029tech-003 37.09 The accuracy of measuring frequency
061029tech-003 39.30 On NASA TV - The end of Hubble?
061029tech-003 45.10 Measuring Kelvins
061029tech-003 49.15 Converting Kelvin to dB of noise figure
061029tech-004 0.00 The relationship between Z, R, X, and SWR
061029tech-004 1.00 Ohm meter measurements - Old School vs New School
061029tech-004 3.45 Calibrating the Calibrators
061029tech-004 5.08 Preview of transformers and inductance
061029tech-004 6.30 Shielded copper
061029tech-004 12.00 Using Gortex cable for calibrations
061029tech-004 14.39 The "Craftiness" of ham radio


November 5, 2006 Show

Audio File Time Topic
061105tech-001 0.00 (Already in progress) Amazing facts of the universe
061105tech-001 1.00 Dark matter and black holes
061105tech-001 2.00 Value of the Hubble Telescope for NASA research
061105tech-001 5.31 1959 Air Force film on orbs
061105tech-001 6.31 Radio astronomy led to the discovery of Pulsars
061105tech-001 8.08 Reasons for making a ground
061105tech-001 11.02 Specifications for a proper ground
061105tech-001 12.50 Optical SETI vs radio SETI
061105tech-001 20.33 Computer codes invented by Joe Taylor making new horizon for moonbounce
061105tech-001 23.45 New computer software for deepspace search
061105tech-001 24.30 The "Wow" signal of 1978
061105tech-001 33.40 Parametric Amplifiers vs Cryogenics GasFets
061105tech-001 35.00 Noise that is received with your signal
061105tech-001 37.09 How Kelvins effect radio signals
061105tech-001 38.30 How rain clouds effect your dish signals
061105tech-001 41.30 Amplifiers used during the Wow signal event
061105tech-001 44.50 The need for parallel hardware
061105tech-001 46.10 VLBI
061105tech-001 48.04 The making of a Interferometer
061105tech-001 57.09 HAARP and ionization
061105tech-002 0.00 Artificial Ionization
061105tech-002 1.07 Side effects from HAARP
061105tech-002 1.30 The troposphere
061105tech-002 2.05 Energy of a Katrina hurricane vs the power of HAARP
061105tech-002 4.05 Global warming and the atmosphere vs HAARP
061105tech-002 7.11 Tesla's percolation theory
061105tech-002 8.40 HAARP and the jet stream
061105tech-002 10.31 What is a Cygearial clock
061105tech-002 19.00 SMITH CHART LESSON #2
061105tech-002 19.20 sc exercise info - working 75m from a mobile, a 750 watt amp, and a 5:1 SWR
061105tech-002 34.50 SPACE REPORT Hubble is saved!
061105tech-003 0.00 Hubble repair will take five space walks
061105tech-003 0.31 The replacement of 128 "non-removable" screws
061105tech-003 1.45 Need for a device to pick up loose screws in space
061105tech-003 5.00 Hubble galaxy photos
061105tech-003 7.38 Hubble sees only small percentage of everything
061105tech-003 7.50 Examination of "DC to Gammaray"
061105tech-003 9.00 $1 cost per American to upgrade Hubble
061105tech-003 10.01 Cost per photo by Hubble
061105tech-003 12.45 Smith Chart's resistive 50 ohm circle
061105tech-003 20.02 Using the Smith Chart in an admittance manner
061105tech-003 20.55 Using a cellophane layer on a Smith Chart
061105tech-003 24.45 Learning by Smith Chart vs learning by equations
061105tech-003 26.00 Antenna near field calculations
061105tech-003 32.32 The art of teaching math and science
061105tech-003 36.50 Intersection of lines in a Smith Chart
061105tech-003 40.09 The three sets of circles in a Smith Chart
061105tech-003 44.00 Admittance components
061105tech-003 47.04 Shunt and Impedance
061105tech-003 50.05 Art of Teaching continued
061105tech-003 51.25 Amperes and "Koolons"
061105tech-003 56.39 Batteries have come a long way
061105tech-003 58.00 Traits of a good teacher
061105tech-004 0.00 The state of teaching in the US
061105tech-004 2.23 End of net


November 12, 2006 Show

Audio File Time Topic
061112tech-001 0.00 (Already in progress) Good front-end filtering
061112tech-001 4.30 Performance vs battery drain trade-off
061112tech-001 6.30 Sabre and the HT1000 used as police club
061112tech-001 8.01 Motorola's standards for their handytalkies
061112tech-001 11.20 One of the strongest HT ever built - Icom IC2AT
061112tech-001 13.05 Today's durable HTs
061112tech-001 17.15 Motorola as a company
061112tech-001 22.50 Lithium Ion battery discharge chip
061112tech-001 26.35 Reasons for the Battery Discharge Chip
061112tech-001 31.00 Leaving a battery in an HT overtime
061112tech-001 35.06 CMOS batteries
061112tech-001 37.00 Finding Motorola HT software
061112tech-001 37.40 The dangers of taking apart a Lithium Ion battery
061112tech-001 40.37 Coax cable cutters and strippers
061112tech-001 45.09 "XaLight" Eurocrimp Cable Crimper Kit
061112tech-001 50.27 Using crimp connectors outdoors
061112tech-001 55.56 Duplexer Cavity Noise Rejection
061112tech-002 0.00 Demonstration on military crimp connectors
061112tech-002 2.52 BNC vs TNC connectors
061112tech-002 4.45 N connectors and crimping
061112tech-002 6.55 BNC connectors in cavity filters
061112tech-002 10.10 PIMN distortion
061112tech-002 14.03 Water pipes used a part of the transmission line
061112tech-002 17.50 Wavelengths shown on Smith Chart lines
061112tech-002 21.33 Lithium Ion battery recalls
061112tech-002 30.36 Countries sharing the cost of the Hubble
061112tech-002 34.30 SMITH CHART LESSON #3
061112tech-002 38.20 Normalizing Impedance
061112tech-002 40.50 Reflecting Coefficient
061112tech-002 44.40 Polar Angles
061112tech-002 47.10 Matching 1 frequency on 75m
061112tech-002 48.10 Shunting-type stubs
061112tech-002 51.20 How a stub becomes an inductor and a capacitor
061112tech-002 56.04 The requirements of Admittance
061112tech-002 56.45 Synerio of two signal generator boxes
061112tech-003 0.00 What is an MHO - continued
061112tech-003 5.15 What's an "I" and a negative "I"
061112tech-003 13.01 Making a Matchbox
061112tech-003 19.10 Boiling it down to feet, inches, and meters
061112tech-003 22.30 US vs the metric world
061112tech-003 29.35 SPACE REPORT
061112tech-003 30.05 NASA lost contact with another Mars satellite
061112tech-003 33.00 The metric system discussed
061112tech-003 39.00 China and Russia want another try at Phobos
061112tech-003 43.51 Rewiring the ISS with spacewalks
061112tech-003 45.10 Projected life of the ISS
061112tech-003 46.32 Earth-size hurricane found on Saturn
061112tech-003 48.06 Why does Venus rotated in the opposite direction?
061112tech-003 51.00 What is our universe?
061112tech-003 57.04 Heatstroke discussion
061112tech-004 0.00 Smith Chart Polar Coordinates
061112tech-004 6.55 "Snowflaking" and Smith Charts
061112tech-004 9.46 Cascaded Noise Power Density Accumulation
061112tech-004 11.20 QST Nov 2006 p38,39 Article on Smith Charts
061112tech-004 15.11 Importance of using to different procedures when measuring antennas
061112tech-004 18.50 "Another look at Reflection" by Maxwell
061112tech-004 20.02 A satellite Maxwell worked on
061112tech-004 23.05 Maxwell's contributions
061112tech-004 25.09 Dick's restrictive Dipole problem
061112tech-004 29.32 article by Dick K2RIW
061112tech-004 34.55 Achieving 1:1 SWR with a dipole
061112tech-004 41.25 Dissecting a rubber-duck antenna
061112tech-004 44.51 Why there are no over the shelf rubber duck antennas


November 19, 2006 Show

Audio File Time Topic
061119tech-001 2.09 Email feedback on metrics
061119tech-001 7.03 Smith Chart Lesson # 4 Transmission Lines
061119tech-001 12.50 Smith Chart exercise: 1296 Mhz and a 3/4 wave antenna
061119tech-001 16.50 WA5VJB website for curcuitboard antennas
061119tech-001 20.08 Is an HT a rubberduck counterpoise?
061119tech-001 29.50 Icom SM25 commercial desk mic
061119tech-001 31.20 1296 Mhz yagis
061119tech-001 32.50 AIL 7380 Noise Figure Indicator
061119tech-001 38.02 What is a Radiometer
061119tech-001 46.44 Total System Gain of the Indicator
061119tech-001 49.07 In-line monitoring
061119tech-002 0.00 GasFet transistors
061119tech-002 3.45 In-line measurements
061119tech-002 8.15 Audio Distortion in Bose headphones while listening to CW
061119tech-002 14.15 Power supplies that keep devices on all the time
061119tech-002 15.53 AC power cords as antennas
061119tech-002 18.18 TenTec Orion 2 "left-right" dial movement corresponds with headphone speakers
061119tech-002 21.27 6m nets by the Taconic ARC
061119tech-002 23.27 Tuning a Yagi and observing the side-lobes
061119tech-002 26.40 Efficiency of dish and horn lobes
061119tech-002 29.06 Side rejection of a 6m yagi
061119tech-002 35.20 Coax line inside the tower vs. outside the tower
061119tech-002 37.09 Motorola 10m HT rubberduck antenna that gives you RF burns
061119tech-002 41.30 Origin of the English Yard
061119tech-002 45.05 Smith Chart Lesson #5 Exercise: 250 Mhz and a length of coax cable
061119tech-002 56.17 Dick continues with a variety of equations
061119tech-003 0.00 The difficulty finding good wireless engineers
061119tech-003 5.03 Power ratio and refection coefficient
061119tech-003 8.45 Calcaluting phase angle
061119tech-003 11.03 Importance of checking your work mathematically as well as graphically
061119tech-003 13.55 When a feedline also becomes an impedance converter
061119tech-003 21.54 Measuring the phase angle of very high frequencies
061119tech-003 23.08 Using a slotted line with a probe moving up and down the transmission line
061119tech-003 27.40 The TenTec network analyzer
061119tech-003 29.08 The automatic tuner is a poor man's network analyzer
061119tech-003 33.00 electric wire systems and spark gap transmitters
061119tech-003 36.02 WKRM lectures
061119tech-003 38.04 MFJ-835 RF Meter for balanced lines
061119tech-003 42.01 History of spark gap and FISTS


November 26, 2006 Show

Audio File Time Topic
061126tech-001 0.00 Linking two amplifiers together
061126tech-001 5.22 Smith Chart Circular Sliderules
061126tech-001 6.14 Linking two amplifiers together - continued
061126tech-001 8.00 Phase and Amptitude errors to consider
061126tech-001 9.09 Using a Quad Hybrid
061126tech-001 10.02 Making an amplifier stable
061126tech-001 11.05 Wilkinson, Quaduiture, and Ring Cuppler Hybrids
061126tech-001 12.40 W5BMG Road Runners Microwave website
061126tech-001 13.15 Negative talk regarding linking together of 2 amps
061126tech-001 15.01 Wilkinson is the easiest to build
061126tech-001 17.30 Dividing and "rejoining" the amp together again
061126tech-001 20.02 SWR using the hybrid
061126tech-001 21.02 Kurakawa techniques of a balanced amp
061126tech-001 23.02 Using a hybrid for a TV production truck
061126tech-001 31.20 Using amplifiers for warfare
061126tech-001 32.10 1800' tower used by a ham on 6m
061126tech-001 34.50 What's the range of an HT?
061126tech-001 40.45 dB in relation to x:1
061126tech-001 42.06 dB loss of the 1st mile of a 2m transmission
061126tech-002 0.00 Using a 1000 foot dish on 432 Mhz
061126tech-002 2.02 Moonbouncing with the Arocebo Dish
061126tech-002 5.44 K1JT software for digital signal processing
061126tech-002 6.15 Is the Joe Taylor K1JT fair for contesting?
061126tech-002 7.15 The "new" moonbounce operators
061126tech-002 8.30 The definition of a valid QSO
061126tech-002 10.21 The spirit of ham radio and wireless communications
061126tech-002 15.03 North Carolina contact using a dish with 2/10 watt
061126tech-002 20.20 The problem with QST cover stories
061126tech-002 22.00 TechNet guidelines for emails
061126tech-002 26.03 Smith Chart Lesson #6
061126tech-002 27.18 Making measurements in VHF
061126tech-002 31.18 Ratio between Peak Voltage and Null Voltage
061126tech-002 34.00 Using an antenna for 450 Mhz and its electrical length
061126tech-002 45.15 Using a Bird wattmeter
061126tech-002 51.02 Changes in "S" units and microvolts
061126tech-003 0.00 Smith Chart Lesson #6 - continued
061126tech-003 0.34 Interpreting SWRs
061126tech-003 4.35 Adding color to Smith Charts
061126tech-003 9.55 Making your own probes


December 3, 2006 Show

Audio File Time Topic
061203tech-001 2.54 Free Space calculations review
061203tech-001 3.30 HTs in a wheat field scenario - effects of line of sight transmissions
061203tech-001 8.31 1 HT is now on a 50 foot tower
061203tech-001 11.19 Observing the Slant Range
061203tech-001 13.35 The Voltage Vector Sum
061203tech-001 17.00 Direct line of sight Rural vs. Urban: a comparison
061203tech-001 21.20 Importance of the bounced signal
061203tech-001 24.00 Measuring bounced signals with two horns
061203tech-002 2.51 Throwing a box of ping-pong balls down a hallway simulating bounced radio signals
061203tech-002 7.55 Reaching the space shuttle with an HT
061203tech-002 10.50 Limitation due to the earth's curvature
061203tech-002 11.44 Earth's curvature example 75 miles over land = 900ft curvature elevation
061203tech-002 15.30 Varrazano Bridge construction error due to no info re earth's curvature
061203tech-002 16.15 Wheat field experiment with HTs vs. out in the ocean with HTs
061203tech-002 17.56 Super Refraction Condition
061203tech-002 28.10 Horizontal vs. vertical polarization for dxing
061203tech-002 31.34 Oceanfront property- good or bad for dxing?
061203tech-002 43.00 Antenna tuner placement within a mobile
061203tech-002 46.00 Mobile receiving antennas vs. mobile transmitting antennas
061203tech-002 48.06 Installing the IC7000, auto tuner, and whip antenna
061203tech-003 0.00 Continued - Installing the IC7000
061203tech-003 0.30 Sabre 3 police mic with antenna - is it safe and why?
061203tech-003 1.39 RF Burning of eyes
061203tech-003 2.38 Man in Nassau County has permanent eye damage due to RF exposure
061203tech-003 5.36 6 minutes is the RF exposure limit
061203tech-003 6.42 Police make extremely short transmission - avoiding going over the exposure limit
061203tech-003 9.10 SPACE REPORT - STS116 viewable from Long Island
061203tech-003 16.10 Rewiring of the ISS and work on solar panels
061203tech-003 24.34 Rotary joints on solar panels rotate 16x a day
061203tech-003 28.00 Using AC vs DC motor on the rotary joints
061203tech-003 32.00 Tour of underground Penn Station
061203tech-003 32.40 Woven rotary converters
061203tech-003 56.00 Wire cable covering "Lacing Cord"
061203tech-003 59.12 SMITH CHART LESSON #6
061203tech-004 0.00 Continued - SMITH CHART LESSON #6
061203tech-004 0.10 50 ohm line input 60 ohm resistance, J35 reactive
061203tech-004 8.37 Measuring at the Antenna
061203tech-004 19.32 3/32" center conductor transmits on 10Ghz
061203tech-004 21.20 Days of the slide rules vs today's calculator
061203tech-004 24.01 Exponential Equation on paper equals straight line
061203tech-004 25.00 Do schools teach Smith Charts anymore?
061203tech-004 26.06 Computer programs prone to "Garbage In - Garbage Out"
061203tech-004 28.07 Importance of documenting your work
061203tech-004 33.10 Having a reputation of doing things "Quick and Dirty"
061203tech-004 38.37 The notepad and pencil vs the PDA
061203tech-004 40.35 Dangers of storing personal data in cell phones
061203tech-004 42.45 RF ID Tags
061203tech-004 51.09 Protecting yourself from RF ID theft
061203tech-004 53.02 Frequencies used for RF ID Tags
061203tech-004 56.08 "Umetal" and the blocking of RF ID readers
061203tech-004 57.01 "Umetal" used in old TV tube shielding
061203tech-005 0.00 Continued - Umetal used in old TV tube shielding
061203tech-005 5.14 Review of TechNet emails
061203tech-005 6.00 Yagi Side Lobe article criticism from Australia


December 10, 2006 Show

Audio File Time Topic
061210tech-001 2.24 Making a calibration chart for HF antennas
061210tech-001 6.12 An antenna's Front to Back Ratio
061210tech-001 8.32 WARC conference agreements over frequencies
061210tech-001 10.50 dB D (dipole) and dB I (isotropic) discussion
061210tech-001 12.28 Determining proper gain of an antenna
061210tech-001 15.00 calculating path and obstructed path
061210tech-001 16.10 The Frennel Zone and the 2nd Frennel Zone
061210tech-001 18.20 A closer look at Frennel Zones
061210tech-001 20.38 Using ground reflection in measurements
061210tech-001 29.07 Terrain could add 70dB of loss
061210tech-001 30.43 The bad rap of the HT rubberduck antenna
061210tech-001 33.10 Using topography data for calculating path loss and antenna patterns
061210tech-001 34.25 The importance of the signal's first obstructing in calculating signal loss
061210tech-002 0.00 TS99 topography data used in NASA software
061210tech-002 3.29 Measuring multipath with Yagis
061210tech-002 4.55 X Band testing at Wright Paterson AFB
061210tech-002 6.38 Contents of your root effect RF signal
061210tech-002 8.10 Attic antennas vs roof antennas
061210tech-002 10.58 Viewing the shuttle's glow from the Southern Long Island coast
061210tech-002 18.02 The difficulty getting the shuttle and the ISS on the same orbit
061210tech-002 22.20 Overview of a telescope's gain and its forward aperture
061210tech-002 23.31 Sky & Telescopes Magazine guide to telescopes and binoculars
061210tech-002 27.30 The three pronunciations of Haley's Comet
061210tech-002 30.01 The Questar Telescope
061210tech-002 32.09 The definition of a Dark Zone
061210tech-002 35.30 Emails received regarding "Umetal"
061210tech-002 37.00 1960 TV sets with "Umetal"
061210tech-002 43.49 The fate of NTSC cameras
061210tech-002 45.15 History of NTSC broadcast cameras
061210tech-002 48.03 The high cost of TV camera lens
061210tech-002 52.03 New cameras on the market
061210tech-002 53.05 Limitations of the human's eye sight
061210tech-002 54.35 The history of The CBS Colorwheel
061210tech-003 0.00 The history of The CBS Colorwheel - continued
061210tech-003 4.27 End By End Response and harmonics
061210tech-003 8.20 Apollo 12 and color transmissions
061210tech-003 16.15 Smith Chart Lesson #7
061210tech-003 16.39 Exercise 1/4 wave vertical on 20m 16 radials 100' RG8 SWR bridge to rig
061210tech-003 31.30 Fred Cunningham K1FC Plot
061210tech-003 35.02 Smith Chart Lesson continued
061210tech-003 42.45 More Fred Cunningham's program on discussed
061210tech-003 46.41 Results of the Smith Chart Lesson
061210tech-003 50.28 Best techniques for broadbanding a dipole (ARRL Handbook Ch.9)
061210tech-003 54.00 How a signal travels through a dipole
061210tech-003 55.37 Resonate then radiate
061210tech-003 58.12 W4ANL Seebeck's source of the info for broadbanding a dipole
061210tech-003 59.30 Review of TechNet emails
061210tech-004 0.00 Review of TechNet unreadable emails
061210tech-004 1.25 Tips for writing good email for the TechNet
061210tech-004 2.03 Crazy long article titles found in trade journals
061210tech-004 3.15 The relevance of trade journal articles
061210tech-004 3.40 "Publish or Perish"
061210tech-004 4.34 Wheeler/Johnson equation (squeezing an antenna into a small volume)
061210tech-004 7.51 The definition of the NVIR antenna
061210tech-004 13.50 Mel received 72 emails in one week
061210tech-004 17.15 The fear of the word "Radiation"
061210tech-004 17.23 Public concerns over antennas placed next to a LI school


December 17, 2006 Show

Audio File Time Topic
061217tech-001 2.30 Grid Dip Meter (Oscillator)
061217tech-001 6.05 When 2 oscillators come in close proximity
061217tech-001 9.31 Strip-line circuits
061217tech-001 16.12 GD Meters used in Amateur TV
061217tech-001 19.01 Dummy Coil Double Frequency
061217tech-001 21.15 Designing your own Grid Dip Meter
061217tech-001 22.07 Output of a Grid Dip Meter
061217tech-001 23.50 The MFJ-259, 269 Grid Dip Meter-like functions
061217tech-001 29.02 Nov 2006 QST SWR and SWR meters article
061217tech-001 29.58 Transmission line and correcting the SWR
061217tech-001 32.40 Open wire line popularity
061217tech-001 34.13 Running a 20:1 SWR on modern day transmitters
061217tech-001 36.10 FCC ends Morse Code testing Ramifications and Discussion
061217tech-001 44.06 SPACE REPORT
061217tech-001 50.00 Solar Panels on the shuttle
061217tech-001 53.03 DC Converter work during a space walk
061217tech-001 55.06 Inductive Coupling in the Rotary Joint
061217tech-002 0.00 Shuttle Rotary Joint discussion continued
061217tech-002 6.11 Car Solar Cell technology built into the shuttle's panels
061217tech-002 8.14 Shuttle Panel sharp edges
061217tech-002 9.37 NASA Tech Briefs
061217tech-002 11.04 NASA's ROI re: the shuttle
061217tech-002 12.40 DC converters for the shuttle's rotary joint
061217tech-002 18.11 NAARD (Rubber Ducks)
061217tech-002 19.30 The bad rap Rubberducks get
061217tech-002 21.39 Smith Chart Lesson #8 - RG8U line 500 ohm line and a 72ohm line added
061217tech-002 0.00 Smith Chart Lesson #8 - continued
061217tech-002 16.09 Dick's colleague SQF0D in Santiago, Chile
061217tech-002 17.00 Radio waves at a molecular level - 2 different views
061217tech-002 24.24 Tank circuits - 2 approaches - Same answer
061217tech-002 26.23 Feedback from Dick's article on Yagi side-lobes
061217tech-002 29.50 Ikagami demo "setup" by taking the answer and having the problem fit it
061217tech-002 33.00 How a Yagi behaves like a set of optics
061217tech-002 38.30 Deviating Data
061217tech-002 41.04 Tenser Field on a dish
061217tech-002 47.33 Antenna Scattering Article
061217tech-002 50.08 Yagi Director Spacing
061217tech-002 51.15 Making a Velocity Profile
061217tech-002 52.43 DL6WU - The guru of Yagi experiments
061217tech-002 55.07 Moore's Law
061217tech-002 56.23 Make the boom longer or add more elements?
061217tech-003 0.00 Yagi gain vs boom length - continued
061217tech-003 2.32 Removing the reflector from a Yagi
061217tech-003 5.02 2 types of Radiotelescopes
061217tech-003 6.51 Yagi side lobes are not wasted
061217tech-003 7.51 Gain vs SWR vs Bandwidth
061217tech-003 13.09 Patterns of a Yagi's front and back ratios
061217tech-003 15.35 Advantages of using the "Stepper IR" Yagi
061217tech-003 22.00 The 20dB gain spec for yagis
061217tech-003 25.45 Manual Yagi adjustments
061217tech-003 31.02 The magic 20dB figure continued
061217tech-003 31.58 dB gain vs Forward gain
061217tech-003 33.57 K1FU 31 element yagi redesign able?
061217tech-003 36.09 80m and 180 foot yagi boom in Japan


December 31, 2006

Audio File Time Topic
061231tech-002 2.00 Sporadic E and the sun spot cycle
061231tech-002 7.30 6m and TVI
061231tech-002 8.44 Drake filters used on 2m
061231tech-002 17.49 Drake R4C and its Noise Blanker
061231tech-002 20.01 Directive Systems Yagi resonates on 427 Mhz not on 432 Mhz as printed
061231tech-003 0.00 Roofing Filter testing
061231tech-003 3.34 Sealing a connector
061231tech-003 13.25 160m loop with minimal wire and a tuner
061231tech-003 14.55 Differential vs Common Mode in loops
061231tech-003 16.13 Misleading SWR readings
061231tech-003 17.06 Using 2 separate L Networks
061231tech-003 18.50 The mystery of Loop Antennas
061231tech-003 25.09 Drooping wires from Loop Antennas for better reception
061231tech-003 24.11 Adding loops to loop antennas
061231tech-003 25.53 "Hertzian" Dipole's 115 year history
061231tech-003 28.49 New ways to make a Broadband Dipole
061231tech-003 36.07 Tesla and the Loop Antenna
061231tech-003 39.00 300dB difference in sensitivity between old and modern receivers
061231tech-003 41.09 Receiver design evolution - tubes to solid-state back to tubes again
061231tech-003 43.00 Why Dick doesn't using Modeling software programs
061231tech-003 44.03 Radiometry Antenna Range
061231tech-003 50.01 Using the Edisonian approach in tuning an antenna
061231tech-003 54.20 How modeling software interprets gain
061231tech-003 56.20 Dec 2006 "Antenna and Propagation Journal" article
061231tech-004 0.00 Microwave Reflector study of 432Mhz dipoles
061231tech-004 2.01 Avantages of spacing elements wide
061231tech-004 3.51 "MiniNC" modeling program
061231tech-004 9.02 Emergency Dipole design using speaker wire
061231tech-004 10.50 Making antennas for urban QTHs
061231tech-004 14.30 Google maps of Paris and Dick's QTH
061231tech-004 16.22 Feedback from Dick's article on Yagi side-lobes
061231tech-004 21.40 The Amplifier and the Auto Antenna Tuner relationship
061231tech-004 25.06 The effect of S-Units by going from 100 watts to 600 watts
061231tech-004 27.20 Hexbeam antennas
061231tech-004 32.45 Beverage antennas and load resisters
061231tech-004 36.24 Smith Chart email feedback
061231tech-004 37.18 Text on Smith Charts
061231tech-004 38.12 Pozar, Theodore Mareno
061231tech-004 39.00 Intro to electronics by Krauss
061231tech-004 40.11 HP application notes
061231tech-004 41.20 W2DU Reflections on Reflections
061231tech-004 42.20 Four-square Antenna and "1-port phasing"
061231tech-004 47.40 Traveling wave V antenna
061231tech-004 49.55 All elements are driven and all are almost touching each other
061231tech-004 57.00 Description of the V antenna
061231tech-005 0.00 Description of the V antenna by W7DD - continued
061231tech-005 1.26 Positioning the phasing harness
061231tech-005 4.15 Cross-coupling of elements
061231tech-005 7.46 Setting the length of 4 feed lines
061231tech-005 15.43 Placing loading coils on the 4 dipoles
061231tech-005 26.43 80m receiving loop antennas
061231tech-005 27.33 Dissecting a 20 foot loop antenna
061231tech-005 30.55 Mel's 12 foot loop antenna
061231tech-005 37.51 Short range QSOs on 80m
061231tech-005 40.22 Loop antennas tilting using a tripod
061231tech-005 46.01 Antenna performance with distributed capacitors of coax