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Modifications, manuals and schematics for Yaesu VX-7R

Program that produces antenna radiation patterns and graphs for SWR, forward gain, and F/B ratios

The Beverage antenna was invented in the early 1920s by Dr. Harold H. Beverage

Based on HB9CV, F6ITV decribes how build a swiss quand antenna for 28 and 50 Mhz.

Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.

End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.

Build your own multiband W3DZZ antenna resonating on 80 40 20 15 and 10 meters band

Total Boom Lenght is 3 m.

Modifications, schematics, programming interfaces and manuals for the Yaesu FT-897

Installing your dipole end insulators, a beginner guide to proper setup wires to insultaors.

Calculate eh antenna components dimension with this online form

A G5RV plan for 10-160 meters, 10-40 and 10-80 meters band

PC sound card interfacing for RTTY SSTV PSK31, collection of interface connections to choose from when having a desire to use the Soundboard

Modifications schematics and manuals for the Yaesu FT-857D

HF receiving loop antenna, an easy-to-make receiving loop antenna for HF

Homebrew a 5/8 wave ground plane antenna for 10 meter band. Interesting article with lots of pictures and homebrew details.

A magnetic loop antenna for 144 mhz, two meter band

Programming interface schematics for Icom: Programming software for Icom IC-706 (Icom IC 706 IC706) : PDF Service Menu for Icom IC-706 (Icom IC 706 IC706) : PDF Service Manual with schematics for Icom IC-706

Tthe ultimate program designed to connect you to ACARS systems around the world via the Internet

Programming interface schematics for Yaesu FT-897D programming interface, Yaesu 4 pin plug PDF User Manual for Yaesu FT-897D (FT 897 D FT897D)

Ham radio amateur radio, short wave, CB, DSP software, by VE1EXE (RIP) DSP Software eSoftAnywhere DSP & more Memorial free version.

Instructions to build a portable dipole for 20 meters

KA1FSB loop calculator give you a quick overview of the feasibility of "squeezing" a loop into your available yard or apartment space. The easy calculator yields a reasonable approximation of dimensions, to within 5% over the amateur bands, using typical wire gauges ranging from 12-18 AWG.

Programming a new VHF/UHF radio usually proves to be a frustrating experience for most new amateur radio operators. A new radio must first be programmed for simplex and repeater operation before it can be used to communicate with local hams.

A simple and cheap dualband j-pole antenna for 144 and 430 MHz

Magic Anti-Jamming antenna for shortwave reception

Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.

Freeware acars deconding software for windows.

10 meter modification for the Ameritron AL-811 and AL-811H amplifier. This mod apply to other Ameritron AL Series RF amplifiers and allow extension to 10 and 12 meters band.

A Mississippi Style 40 meter magnetic loop made from available aluminum conduit, this antenna will not disappoint by Ken Holland, K9FV

To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands

The dipole antenna is an easily designed and made antenna usually used on HF, although can be (and sometimes is) made for VHF and UHF antennas, and in varying forms is also used as part of different designs of antennas i.e. as the driven element for directional antennas.

W7SIR cubical quad antenna for 146 mhz

Download Kenwood's free radio control software for the TS-570 HF

Download this Microsoft Excel-based converter to import ADIF to Excel table and export the Excel Table to ADIF file format.

M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!

An easy guide to "How to build your own magnetic loop" for 20 meters

*One single page* gives you an immediate overview of current shortwave propagation conditions at your location.

Here you can find a a selections of CAT interfaces for ICOM Yaesu Kenwood.

Pictures and plans of a 4 elements yagi beam antenna for 14 Mhz

Kenwood TS-2000 manuals schematics and mods

The 75 meter dipole at K7ZB was put up to meet the need for making contacts with friends in the Southwest and Southern California. As usual, it had to be put up so no one can see it from the surrounding neighborhood.

The Flower Pot Antenna project details a portable dual-band antenna primarily operating on 10 meters, with secondary resonance near the 30-meter band. Construction involves winding RG58 coaxial cable uniformly around a large plastic flower pot, approximately 70cm high with a 60cm top diameter. The design eliminates the need for radials, contributing to its compact and lightweight nature. Key construction steps include soldering the inner conductor to the shield at one end of the wound cable and connecting the wound cable's shield to the rig cable's inner conductor at the base. An LC network, comprising a variable capacitor (0-200pF) and an inductor (10 coils, 5cm diameter, 2mm wire), is inserted between the wound cable's inner conductor and the rig cable's shield. Tuning is performed with an antenna analyzer, adjusting cable length and the variable capacitor for optimal impedance on 10 meters. The antenna performs effectively when installed horizontally.

A 3 band dipole for 10 15 and 20 meters band, easy to build, and that can be easily setup in any occasion, inclunding field days or portable operations

Here is a high-performance hand-held beam antenna that is easy to build and guaranteed to improve your downlink from the LEO satellites over ANY rubber duck or mobile whip

Build your own antenna for the 23cm band ( 1250Mhz - 1280Mc ) using some aluminium and this simple design.

info on marine radio frequencies

IC-718 modifications schematics and manuals

An inverted U wire antenna for 200 meters and down

Make your own dummy load with two 100-ohm 5W resistors