Amateur Radio Resources
A curated list of links, tools, and organizations for the amateur radio community
Livermore Valley Repeaters
Access our comprehensive director of local repeater systems, including frequencies, offsets, PL tones, and standard usage guidelines for the Tri-Valley area and beyond.
Government & Regulatory
Organizations & Clubs
- ARRL - American Radio Relay League
- Sunol Ridge Repeater Group (W6SRR)
- Mount Diablo Amateur Radio Club
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South Bay Amateur Radio Association
Serving Fremont, Newark, and Union City.
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Maritime Radio Historical Society (MRHS)
Restoration of ex-RCA coast station KPH
Tools, Directories & News
- QRZ Amateur Directory
- Amateur Radio Newsline
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California QSO Party (CQP)
The premier state QSO party held every year on the first weekend of October. Sponsored by NCCC.
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LeapSecond.com
A web site dedicated to precise Time & Frequency
Technical References & Learning
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G3SEK's Amateur Radio Technical Notebook
VHF, UFH, Moonbounce
- AC6V's Technical Reference
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LCWO.net
Learn CW online in your browser. Convert text to Morse and more.
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Off-Center-Fed Dipole
A very good discussion of how an Off-Center-Fed Dipole works.
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Balun Designs
High quality baluns and ununs at reasonable prices.
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TeraTerm
General-purpose serial and TCPIP/Telnet terminal program.
Specialized Radio Topics
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LoRa APRS
Frequency for the USA is 433.775 MHz
- LoRa APRS Tracker (GitHub)
- Interactive LoRa APRS Map
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Terrain Assessment - Using HFTA and MicroDEM
Audio and slide presentation by Dave, KK6DF.