part number

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.

Radio Boatanchor parts - Knobs, slicers and antique radio parts for heathkit Johnson Kenwood Hallicrafters Hammarlund and many more

Ham Radio QSO Parties - QSO Parties held around the area. Details about making the most of the many QSO Parties. A place where planning information, operating details and technical advantages are discussed

Pacific IOTA Numbers - IOTA Designation for The Hawaiian Islands

Nienberge Amateur Radio Group Germany - "The Nienberge Amateur Radio Group a subdivision of the DARC - German Amateur Radio Club; our group's number is ""N 46""."

Western Illinois Amateur Radio Club - WI ham club partecipate in Field Day, sponsers an annual Swapfest held in August, and provides various repeaters.

Amateur Radio RF Safety Calculator - This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations.

Radioworks - Source for high performance wire antennas, Current-type Baluns, Line Isolators, quality wire antenna parts and accessories.

FR Radio Lab - Magnetic Loop antennas, also availble in parts from japan

Davis RF - provide electronic and electrical wire, cable, RF connectors, DSP audio filters, rope, non-conductive guy cables for aerial or tower support; plus sundry aerial related parts

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!

All Electronics Corp. - Surplus and electronics parts. On-line catalog available.

Ameritron  ^pop - Manufacturer of amplifiers, antenna switches antenna Tuners, wattmeters and relay buffers, amplifier accessories, antennas and tubes and parts

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.

The Sunspot Cycle - Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.

RF Parts - Antennas, books, rf parts, tubes,connectors and cables and many accessories at RF parts.

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.

SHF MICROWAVE PARTS Co. - Microwave parts for ham radio and experimenters.

Surplus Sales of Nebraska - 3000 page mega website for Radio Amateurs, builders, radio broadcasters, manufacturers and individuals around the world. We cover any RF part you can think of from vacuum capacitors to rf connectors to transmitting doorknob caps to roller inductors.

Antique Electronic Supply - Antique Electronic Supply has a complete line of vacuum tubes. We feature Svetlana vacuum tubes for amateur radio, broadcaasting and audio applications. We have over 700,000 new old stock tubes to choose from. We also have a complete line of transformers, featuring Hammond and One Electron. Capacitors, resistors, parts, books, etc. Most orders shipped within 24 hours. Major credit cards accpeted. E-mail for free catalog!

Trans World Radio - Trans World Radio has been a part of Guam since 1975 when our MW (AM) station (KTWG) first took to the airwaves. Our Shortwave station (KTWR) has been on the air continuously since 1977.

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

Antenna Visualization  ^updated - UNIX Application developped at the University of Texas Department of the Computer Sciences, permit to display the radiation pattern and the current magnitude.

PacketCluster DX statistics - This program extracts statistics from a dx.dat file to show numbers of spots for each country on each band

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