40m transmitter circuit

G3SEK's Amateur Radio Technical Notebook - A lot of good informations concerning antennas, filters, moonbounce, and circuitry data.

Center-Loaded Off-Center-Fed Dipole - 6 band - Multiband Center-Loaded Off-Center-Fed Dipole (CL-OCFD) antenna that work on 80m 40m 30m 20m 15m 10m by ON4AA

Hammond Museum of Rradio - Now home to over 1,000 radios and transmitters dating from the spark era up to.

Omiss - OM International sideband society incorporated nets 75M, 40M, and 20M Nets begin one hour earlier during Daylight Savings Time

Ireland - IRTS - Irish Radio Transmitters Society

Malaysia - MARTS - Malaysian Amateur Radio Transmitters' Society

New Zealand - NZART - New Zealand Association of Radio Transmitters

SuperCircuits - ATV accessories manufacturer

The Ventenna - Rugged, disguised 2m, 220MHz, 440MHz, and 2m/440 dual band antennas, HF portable antennas, portable dipoles.

Piccon - PicCon is a PIC microcontroller based radio controller designed for hidden transmitter hunting

Terrasat Inc. - Manufacturer of Receiver and Transmitter for Digital Microwave radio and VSAT equipment

Almost all digital electronics - This site is dedicated to electronics hobbyists, engineers, and Radio Amateurs interested in circuit design, homebrew and kit projects.

Advanced Communication Sys - Repeaters, transmitters and receivers manufacturer for ham radio and commercial applications

Hi Pro - Repeaters, transmitters, receivers, small power Amps and Controllers

N6QAB Radio Direction Finding - N6QAB Radio Direction Finding Web Site, DF vehicles, transmitters, sniffers, dopplers, TH-D7A

Shortwave radio transmitters in Zimbabwe - Shortwave radio transmitters in Zimbabwe.

TrueTTY Priority listing - Program for amateur radio digital communications via a sound card. Supported modes are RTTY (Baudot code), ASCII (7 or 8 bits), PSK31 (BPSK and QPSK) and AMTOR-FEC (SITOR-B, NAVTEX). SELFEC SITOR decoding is possible also. No additional hardware required, need only a sound card. Optionally you can use simple circuit fo PTT-control. Can cooperate with RZ4AG AAlog logger.

Radio Propagation & Diffraction Calculator  ^pop - This is a radio frequency propagation calculator for the transmission path between an RF transmitter and a receiver.

432 MHz EME PreAmplifier - 432 MHz EME low noise amplifier. Circuit, components and image by Christoph Petermann DF9CY

40MHz Frequency Counter Module - Design for a very low cost 6-digit frequency counter module using of the shelf components

40 meter 100 watt Transmitter - 40 meter transmitter by K9GDT

The Islander HF RTX - A practical solution by Cuban radio amateurs, hybrid circuit with mostly defunct TV set parts.

SM0VPO Homebrew pages  ^pop - Harry Lythall SM0VPO/G4VVJ homebrew web site, contains several projects, antenna notes and plans, receivers and transmitters plans, regularly updated.

40 meter CW/SSB Receiver - The K9GDT 40m receiver

50 MHz Transverter idea - Complete 144/50 MHz transverter with GaAs Fet LNA and 400 mW out. No printed circuit board. Schematics and images by Christoph Petermann DF9CY