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Amateur Vertical Antenna Calculator  ^{updated  pop} - This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen.

Crossed-Wire HF Antenna - This Crossed-Wire Electrically-Steerable HF Antenna, capable of transmitting signals over the entire 1.8 to 30MHz HF range, and capable of receiving signals at much lower frequencies is basically a crossed centre-fed wire system, consisting of four thin wires brought to a central mast by G3YNH

Delta Radio France - The site of the Delta Radio Frace team

WA7BNM Contest Calendar  ^pop - Complete listing of upcoming ham radio contests, including rule summaries of this week's contests. You can also subscribe to his email service.

Announced DX operations - Announced dx operations by By Bill Feidt/NG3K

The GOLIST, QSL manager list - Source for Qsl manager routes. GOList has been helping DXer's like yourself with QSL routes for those elusive DX Stations since 1980.

AA9PW Amateur Radio Exam Practice - Amateur Radio and Commercial Radio licencing exam practice. You can visit the Technician, General or Extra license pages where you can pick and choose the topics to practice so you can build up to a complete exam.

Bob Lanz N4ISL - Ham Operator since 1982 Hold Extra class license. Other hobby is computering. Also enjoy taveling with motor home.

Trivalantene - Professional antennas in MF, VHF, UHF and SHF frequency range for military applications, civil-professional market, mobile communications, radioamateurs and antennas for special applications - EMC, radiomonitoring, etc.

Centaur Electronics, Inc. - Baluns for amateur and commercial radio.

Max-Gain Systems, Inc. - Fiberglass for the antenna builder, Antenna Mart quads, Bandmaster quads, transmitting components, vacuum capacitors and relays, tower accessories, gin poles, remote RF coax switches, rotating side mounts, quad spreaders, quad parts, bristol wrenches, doorknob capacitors, transmitting electron tubes, and much more!

Alinco - Alinco amateur radio transceivers manufacturer. HF Radios, Mobile transceivers, VHF UHF handhelds, receivers, scanners, power supplies and accessories

International Components - International Components Corporation has an extensive range of electronic components consisting of audible signal devices, speakers, microphones, capacitors, electron tubes, connectors, and accessories designed in recognition of the diversity of applications and special characteristics encountered by designers in today's complex world.

Getting Started with Sound Card Digital Modes - Setting your Amateur radio station up to operate the wide range of modern radio software which uses the PC sound card to generate and receive signals. Murray Greenman ZL1BPU

The home of NuMorse and NuTest - Learn the Morse Code. Learn from random text or simulated QSO (contact) sources. Create character sequences that you find difficult. Compare your results with what the program sent and view error statistics. Take simulated tests. Sound card not essential. Evaluation version not time limited.

SPRE Home Page - The Spartan Packet Radio Experiment (SPRE) is an Amateur Radio (Ham radio) communications experiment. The primary mission was to test satellite tracking using amateur packet radio and Global Positioning System (GPS). SPRE was developed and built by the University of Maryland Amateur Radio Association (UMARA) with assistance from NASA, volunteer engineers, and volunteer software professionals.

NASA Shuttle - Mir Web - Find out about the latest launch and mission to the Mir Space Station or Shuttle now consolidated in a single web site

Novel filter for sat working - Elimiate QRM when working with satellite antennas

Passport to world band radio - "Passport to world band radio is the world's #1 selling shortwave publication. It zeros in on news, sports and entertainment from Afghanistan to Zambia, and includes award-winning ratings of world band radios and ""how-to"" articles by experts."

Scanning Reference - Informations about Scannings, with frequencies, information about scanning, hardware and software reviews

ComDaC Radio - Full line Amateur Radio dealer - Alinco, Icom, Kenwood, Yaesu radios, various antenna and accessory manufacturers.

Radiodan - W7RF - BIRD RF power measuring, new and used, HENRY RF power amplifiers (used HF amps), TOHTSU coaxial relays, SAMLEX power supplies, RFI chokes reduce interference, Parts parts, tubes, Used amplifiers, radios, antennas and accessories, Los Angeles, CA.

Spy Centre - All about Spy Numbers Stations, which send coded messages to agents. Includes schedules and frequencies of stations.

Frequency Manager for Windows - A Windows program for Storing, Sorting, Searching, & Printing Frequency Lists.

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.