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Antennas : Antenna Calculators
- Calculate Antenna Lenght in feet, inches and meters
[ Hits: 363 | Votes: 2 | Rating: 6.5 ]
- Balcony Mounted Buddistick Antenna by KP4MD
- The antenna handles 250 watts and covers 40 through 10 meters, with an optional add on coil for 80 and 60 meters. The author in this pages includes an interesting video in which describes the antenna setup, and the importance of the shunting coil on lower bands like 40 and 80 meters. SWR curves diagrams are also included and demonstrate the influence on resonating frequency of the shunting coil.
[ Hits: 149 | Votes: 2 | Rating: 10 ]
- HG7AN Antenna Analyzer
- Antenna Analyzer plus 500 is a multifunctional measuring instrument, very useful for amateur radio activity. Its size allows you to easily take it for relocation as well. Frequency range: 100KHz - 500MHz. Access directly via WiFi. Includes a dual-channel signal generator
[ Hits: 171 | Votes: 1 | Rating: 10 ]
- FT991 MARS Mod
- This modification will expand the tx frequency range of the Yaesu FT-991 from allowing just ham radio bands, to all bands 1.8 - 30MHz and 50-54 MHz.This information is solely for use by licensed members of MARS (Military Affiliate Radio System) or CAP (Civil Air Patrol)
[ Hits: 130 | Votes: 2 | Rating: 5.5 ]
- Zplots - Impedance Plots with MS Excel Charts
- Zplots is an Excel application that allows you to plot impedance and related data obtained from a variety of sources. You can plot on both an XY chart and a Smith chart as well as view the data in tabular format.
The XY chart can be customized with your choice of trace lines. Frequency (in MHz) is always shown on the X axis.
[ Hits: 159 | Votes: 0 | Rating: 0 ]
- Ham Radio TVI in the 21st Century
- Ham radio transmissions can interfere with television reception. This is called television interference, or ham radio TVI. Consumer adoption of cable television has significantly reduced ham radio TVI. But the introduction of IPTV, or television over phone systems, has brought ham radio TVI back, often with a vengeance. Here's why
[ Hits: 203 | Votes: 0 | Rating: 0 ]
- Precision VXO
- The Precision VXO (PVXO) and its matching Crystal Test Fixture (CTF) were created to provide a low cost means of evaluating the characteristics of crystals and a means of measuring their series resonant frequency.
[ Hits: 157 | Votes: 1 | Rating: 1 ]
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