digital satellite

Helix antenna for 2 meters  ^pop - Plan of a helix antenna for 2 meter satellite use by VK5ZAI

A quadrifilar helix weather satellite receiving antenna - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable.

Internet Ham Atlas - A large collection of maps of each dxcc country with general information, banknotes and coins, satellite images, flags and national information where available by SP6NVK

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).

W6AB Mount Desert West - Satellite Amateur Radio Club, W6AB, located on beautiful Vandenberg Air Force Base, on the California Central Coast.

Western Amateur Radio Association - The Western Amateur Radio Association, founded in 1978, is a Ham radio club based in Fullerton, California. The club supports and participates in many activities, including Field Day, transmitter hunting, microwave, satellite, and APRS, to name a few.

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

AOR U.S.A., INC. - Aor u.s.a web site, manufacturer of base and mobile receivers, handheld receivers, digital voice modems, spectrum display units, frequency monitors and antennas

I-LinkBoards.com - Echolink, EQSO, Echostation, SSTV, WEFAX, PSK-31 other digital sound card modes

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).

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

A Flexible Digital-Mode Interface - One interface, all the software—here’s how to do it simplyand inexpensively. QST article by Jim Mitrenga N9ART

FDMDV - Digital Voice - FDMDV - Frequency Division Multiplex Digital Voice Digital Audio over HF SSB. FDMDV is the latest digital voice mode on HF - it caters to high quality digital voice under poor band conditions, in only 1100Hz bandwidth

Work satellite with single IC-706MKIIG - You wanna try to work modern satellite like AO-40 but have only one rig ICOM-706MKIIG ? This article will help you.

AO-27 Satellite page - About operating the AO-27 satellite

WEController - This software let you to control a pair of stepper motors, for three principle jobs: coil tuner, manual tuner control and satellite rotor control

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

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.

UISS Windows Packet Program - This program has been designed for packet communication with ISS (International Space Station), PCSat or 'compatible' satellites with ease... Ideal for any UI packet communication.

David Taylor Satellite tools - Collection of Satellite and Audio tools. Weather and satellite software and utilities

Geosat - MSDOS program to calculate Az-El position of geostationary satellites at specific location and carrier to noise ratio of received SAT TV signal.

Satellite Finder - Satellite Finder is a way to accurately point satellite dishes at communications satellites in geostationary orbit.

WinTick - WinTick is a utility program aiming at synchronizing the PC clock to Universal Coordinated Time (UTC). It was originally developed for accurate satellite tracking, running on the taskbar while a NASA-compliant tracking program (SGP4 or SDP4) is running in the foreground.

ATPDEC - Atpdec is an open source program that decodes images transmitted by POES NOAA weather satellite series. These satellites transmit continuously, among other things, medium resolution images of the earth on 137Mhz. These transmissions could be easily received with an inexpensive antenna and dedicated receiver. For more information about receiving POES satellite images consult the rig site.