digital data

How to build the K9AY loop - This document provided by AT technologies explains how to build the K9AY loop receiving antenna.

Transoceanic resource library - Transoceanic radios, zenith radios, service data, pictures schematics, manuals and owners data.

Canadian Antique Radios Schematics Diagrams Service - We specialize in canadian antique radio schematics for vintage tube radios made in canada. we carry lots of factory electronic circuit schematic diagrams as well as all rcc / radio college of canada service data 1920's - 70's.

Cabrillo Web Forms - Use these forms to manually enter log data to produce a Cabrillo file and submit it to a contest sponsor. The forms are designed for contesters who used paper logging or logging software that doesn't produce a Cabrillo file.

HamLog.eu - This online database, called HAMLOG, can be used free of charge by any radio amateur worldwide.

ON6DP QSL-Manager-Database - Qsl manager database files to download in multiple formats along to IOTA reference and other utilities

Trusted QSL - The mission of the Trusted QSL Group is to keep eQSL an open and free activity for amateur radio operators by promoting the Digital Signature Standard (DSS).

TwinsLAN Amateur Packet Radio Club - TwinsLAN is Minnesota's only amateur radio club devoted to digital communications

Digital modes sounds - Ever wonder what all those funny sounds are that you come across from time to time on the ham bands

RFSM-2400 Digital Mode - A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem. Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).

Position-Report APRS maps - APRS-Webserver, that presents aprs-data and maps for free using Google Maps api. The position data is imported from aprs.org, winlink.org and echolink.org. The map data are partially commercial and free. This server is for amateur radio purposes only.

Russia ATV Amateur TV - Digital Amateur Television web sited include a D-ATV transmitter, D-ATV receiver, D-ATV modulator D-ATV schematics by RA3TTS

The Baudot Code - Table that represents programmer's quick reference to the Baudot character set.

Kenwood/Trio - TS-850S - RigPix Database picture of the TS-850

Contest Log Converter - Contest Log Converter it's a Windows program that allow to convert data file between the most used Contest Log. The program allow you to convert 12 different type of contest, selected from the common contest managed from the Contest Log program. The follow program ,CT by K1EA, TR by N6TR and NA by K8CC are full supported with the conversion of the most famous world contests.

DSCdecoder - DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels

DTMF decoder - A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.

Trusted QSL - Open source libraries and utilities to support using digital signatures for Amateur radio QSL system information like eqsl and lotw. Available for windows macos e linux.

59+ Converter - 59+ Converter is an external application which can be obtained as a part of the 59+ Software package that provides extended functionality for exporting, importing and modifying existing 59+ Log databases, dictionaries and tables.

PSK08 - G4JNT - PSK08 Software for the 56002EVM. PSK08 is a data communications mode identical in operation to PSK31, but operating at one quarter the speed, ie. approximately 8 symbols per second.

Ham Fan - A free small database program for Palm OS that allows you to log ham radio contacts. You can log the call sign, name, date, time and frequency of the contact.

RadioComm  ^pop - RadioComm can be used to program your Icom radio's memory, or to create nice radio-frequency spectra (see above) or to interface your radio to a huge database of frequencies.

Callsign Lookup - Callsign Lookup is a simple, small Apple Macintosh application that allows the amateur radio operator with a dedicated Internet connection (DSL, cable) to quickly access online callsign databases

Coax cable data - Characteristics of commonly used transmission lines

Vacuum Tube Software - The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.