- Designing VHF/UHF Quad Antenna
- The information in this article has come from many amateur sources, the most notable was from WA6TEY (sk 1985) Ray Frost, who was a pioneer of VHF Quad designs and one of the best Southern California Transmitter Hunters. Ray built hundreds two meter quads in single
and paired configurations as well as his famous mobile radio direction finding quad.
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- Loma Pioneer Repeater Club - LPRC
- The loma pioneer repeater club - lprc provides 2 meter vhf and 440 uhf amateur radio and emergency communication for the san francisco and monterey bay areas from a repeater on mt loma prieta. aprs digipeater available.
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- The Clovis Amateur Radio Pioneers is a non-profit Amateur Radio Club located in Clovis, California
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- Clovis Amateur Radio Pioneers, Clovis, CA
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- W8CTT Pioneer Amateur Radio Fellowship
- Serving Akron, Ohio, Summit County and the surrounding area since 1981
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- W7SP Utah Amateur Radio Club
- Our club is the oldest and largest amateur radio club in the state of Utah. It holds the call W7SP, a memorial call for Leonard (Zim) Zimmerman, early UARC member and radio pioneer
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- WiNRADiO Communications
- Pioneering the integration of radio and personal computing, WiNRADiO Communications are the manufacturers of award-winning range of computer-controlled WiNRADiO receivers for professional and amateur applications.
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- AEA Technology Inc. is a pioneer and leading manufacturer of RF and cable test equipment for the wireless, Telco, CATV, NMR & MRI, RFID, telemetry, aviation, commercial, military, and two-way radio industries. Produces SWR Meters, Pre Amplifiers, filters, power meters and antenna testing products
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- ZTEC Instruments
- ZTEC Instruments is a pioneering modular instrument company whose product focus is oscilloscopes and function generators.
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- Neidlinger : radio and electronic pioneers
- Historic profiles of ham radio and electronic famous inventors and pioneers
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- K3PGP Experimenter's Corner
- Covers experimental work from VLF through laser by K3PGP, one of the EME pioneers.
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- Herbach & Rademan
- Pioneer supplier in the radio parts field, and electronic components, alternative power products, kits, test equipment and computer components.
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- Station QRP
- Station QRP is a free low power pioneer shortwave radio station on 6.925 kHz AM
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