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The flower pot antenna - A portable dual-band antenna working principally on 10 meters but also close to the 30 meter band. It’s compact, light, economical and doesn’t need any radial.

Helical Feed Antennas - Helical antennas have long been popular in applications from VHF to microwaves requiring circular polarization, since they have the unique property of naturally providing circularly polarized radiation. Paul Wade W1GHZ

Magnetic antenna fo ULF - Detection and recording of Schumann resonances and other electromagnetic phenomena at frequencies below 50 Hz By Hans Michlmayr

Loop Antenna Basics - Loop Antenna Basics and Regulatory Compliance for Short-Range Radio

Michelle Troutman Electronics - Sams Manuals and Manufacturers' Service Manuals Sams from the early 1950s through late 1970s; various service manuals for brand name equipment from the 1950s to 1991. NOS Vacuum Tubes A price list of over 1100 tubes.

Michigan Antique Radio Club - Michigan Antique Radio Club, or MARC. The MARC was officially founded October 19, 1985 at the Dillon Inn (now the Hampton Inn) in Lansing, Michigan. Our mission: To preserve the history and enhance the knowledge of radio, television and related disciplines

AIRWAVES:Wayne's Vintage Radio's - Old radios collection, vintage radios, sale trade and wanted

Art's Antique Radios - A good reference site for antique radio, bakelite paskon plastinc decription, microphones picture and antique radio gallery

Micronetics Ltd - Electron tubes/valvs NOS & new production.

Badger Contesters Online - The Badger Contesters is a club of like-minded hams who are interested in VHF/UHF/SHF weak signal communications. Our geographic focus is Wisconsin, however hams in Northern Illinois, Michigan's UP, and Eastern Minnesota are welcome to join us.

The Great Lakes DX / Contest Club - The Great Lakes DX / Contest Club is located in the central part of Michigan near the city of Lansing which is the state capitol. The club's main purpose is to support and encourage the DX aspect of the amateur radio hobby.

Mi QSO Party - Michigan QSO Party, sponsored by Mad River Radio Club

50 MHz and Up Group of Northern California - A non-profit public service and educational amateur radio organization specializing in advanced and experimental microwave communications.

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.

Blossomland Amateur Radio Association - Located in Southwest Michigan, in Berrien County

W5HN North Texas Microwave Society

HA1YA Mechanics & Electronics Inc. - Specializes in manufacture of middle and high power RF decks and high quality linear amplifiers with metall ceramic tubes for HF, 6m, 2m and 70 cm bands. Transverters, power supplies and control units

Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world’s leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms

The Caltech Radio Frequency and Microwave Group - Develop microwave amplifiers and related products

Unified Microsystems - W9XT contest card DVK Digital Voice Keyer, morse keyers CW memory keyer, beacon CQ IDer, USB interfaces and more for ham radio operators

Micro908 Kit - A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP

Trilithic - Broadband instruments, R and microwave components and filters, field analyzers, spectrum analyzers

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

FT-1000D mic. modifications - A collection of mods for the yaesu FT-1000D

Asia Radio Sales - Online shop based in hong kong offer batteries mic speakers adaptors programming cables earpieces telescopic antennas handheld antennas desktop chargers handheld speakers. Kenwood Icom Yaesu and Alinco dealer