interface circuit

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

WinLink 2000 - WinLink 2000 employs Stations World-wide to provide an HF/VHF/UHF digital radio Interface into the Internet Email system for the mobile radio operator. Features include binary and graphic file attachments, APRS position reporting and over 340 downloadable WX products. The mode used is Pactor I and Pactor II.

SuperCircuits - ATV accessories manufacturer

Optoelectronics - DTMF, RF, decoders receivers and accessories icluding computer interface boards, frequency counters, tone decoders, spectrum sweeper and nearfield receivers

Hardware interfaces - The LCU-3 is an inexpensive unit that interfaces your radio to your computer.

RT Systems - Online shopping, Programming Software, Icom, Yeasu, Kenwood, Istron, HyGain, MFJ, cat cables interfaces and other radio control cables.

Tigertronics, Inc. - Packet/telemetry modems, GPS tracking, sound card interfaces

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

Pacific Research Solutions - Repeater Controllers, Repeater Tone Panels, Telephone Interface, Remote Monitoring Systems, Process Control and TDS Monitors

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

Radioman - Freeware dos VHF/UHF Logbook morse code facility, kenwood transceivers interface, moontracking, distance and bearing calculators by DF9CY but discontinued and unsupported

HyperLog - Full featured logging program available since 1989. Interfaces to most radio's, TNC's, and Callbooks. Runs under DOS and all "flavors" of Windows. Can run on 8088 or fastest Pentium machine. Easy to use with virtually unlimited database capability. Trial version. Program looks like being dismissed by hypersoft.

RDCP/Mac - RDCP/Mac is a communications software package to interface your Macintosh to models of Kantronics TNCs. RDCP/Mac uses the Kantronics HOST mode allowing simultaneous connections on VHF packet and the HF digital modes when using the KAM.

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.

RadioRaft  ^pop - RadioRaft decodes 10 different ARQ modes, 8 different FEC modes, Packet, Baudot, CW... It works with a Hamcomm interface or a radiomodem. RadioRaft offers automatic detection of modes, speeds and shift. It comes with a frequencymeter/baudmeter included, it has signal frequency tracking and a bit by bit display mode. Very easy to use. practical and fast.

KA Win - KaWin supports multiple Kantronics˝ TNCs and multiple radio transceivers with an intuitive, graphical interface, setting a new standard of performance for digital radio communications.

The AA4M ~ QQSL Web Page - Home of the ultimate Ham Radio QSL Label Program! Quick QSL for DOS, featuring great color, dot matrix, laser, and inkjet printer support, a user-friendly interface,

TH-D7 control program - This software allows you to control TH-D7 radio functions in real time, using a windows interface. This software will graph current activity of any 4mhz range, allowing the user to mouse click any active portion - automatically changing the radios frequency.

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

ICOM CI-V Interface schematic - G3VFP schematic for the ICOM CI-V interface with PTT and CW Keying

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

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

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

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

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