40m transmitter circuit

Surplus Radio Society - Dutch society of collectors of old ex-military radio equipment and other nostalgic receivers and transmitters

1SL1A Sealand DXpedition - 9-10 December 2000, Bands to be concentrated on will be 10m,15m,20m,40m,80m. WARC bands and 160 are being considered

Brightleaf Amateur Radio Club - Club activities, news and newsletter Ham Chatter Online features a member each month. Field Day pictures, etc. Home of VOA transmitter sites. Club calls, W4AMC & W1VOA Greenville, NC

XMATCH Antenna Tuner - Ham Radio Antenna Tuners--Full Legal Power--Patented Circuit--Outstanding Efficiency and Power Capability

Chameleon HF Multiband Antenna - The Chameleon V1 HF Multiband Antenna is a mobile antenna that can also be used as portable. Lightweight antenna system with 10 BANDS capability 6m, 10m, 12m, 15m, 17m, 20m, 30m, 40m, 60m & 80m.

Transmitters 'R' Us - We are manufacturers and re-sellers of a wide range of AM, FM and Shortwave broadcast transmitters, kits and related products.

E. H. Armstrong - Radio's premier inventor, Edwin H. Armstrong was responsible for the Regenerative Circuit (1912), the Superheterodyne Circuit (1918), the Superregenerative Circuit (1922) and the complete FM System (1933)

TV transmitters in Europe - Frequency list of TV transmitter video carriers within the range of 48-85 Mhz.

Yaesu 920 & SoundCard - This circuit provides an interface between the Yaesu 920 transceiver and IBM computer sound card which allows data transfer and control of PSK31, RTTY, KEYBOARD CW, and SSTV modes for Amateur Radio

NOGA QRP club - Small, but growing, group of amateur radio enthusiasts, most of whom are within 90 miles of Atlanta, are interested in promoting the development of the branch of amateur radio known as QRP - building and operating low power transmitters, receivers and transceivers.

Hidden Transmitter Hunting - Lots of information of hidding transmitters, building portable yagi antennas, s-meters, and much more

RDF projects - Antennas, attenuators, fox timers, controlers and transmitters

Trasmitter.org - Transmitter documentation project

BeaconSee - BeaconSee shows you, in real time, worldwide HF band openings on your PC. Analyses the audio signals from your radio, which is tuned to the NCDXF IARU HF beacon network and shows you the signal strength received from each of the 18 beacon transmitters as a plot of frequency spectrum against time.

Elise Software Corporation - Elise Software, OUTPUTMASTER, windows professional software for Printed circuit board, post processor, Gerbers, Drill files, ODB++, files generated fast and simply.

Zelscope  ^pop - Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.

PLL2 - 2nd Order phase locked loop design for passive and active circuits. Bode plot, step response, design parameters

WL7AML Intermod program - This program will run all possible combinations of every transmitter against every receiver in its list

AAVoice digital voice processor  ^updated Priority listing - "Digital voice processor for amateur radio operators. It use prepared ""wav""-files for transmition. Can work in the beacon mode. Optionally you can use simple circuit for PTT-control. It has a lot macros for tramsmitting. Can cooperate with RZ4AG AALog logger."

KI5YN QLF Filter - The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter

TS-440S Improvements - Various circuit improvements for the TS-440S by Richard L. Measures, AG6K

TS-430S Improvements - Circuit improvements for the TS-430S by Richard L. Measures, AG6K

TL-922 Improvements - Circuit improvements for the TL-922 by Richard L. Measures, AG6K

RS232 Interface - This simple circuit is intended for older Kenwood radios and was presented in chapter 22 of the ARRL Handbook.

Defpom CB and HAM radio mods  ^{updated  pop} - Circuit diagrams, CB and HAM mods, alignments, data sheets and pinouts, a massive site with over 600 pages of free info