Amateur Radio
682 sites
https://m1hax.uk/
Richard M1HAX documents his Summits on the Air (SOTA) activations across Britain and beyond, combining amateur radio operating with serious hiking and mountaineering in places like Wales, Scotland, and Malta. The site features detailed activation reports, technical guides like building a LoRa APRS tracker for off-grid position tracking, and a log of radio contacts made from mountain summits.
http://omnicron.com/~ford/ford.html
Mike Ditto's personal homepage, created in 1993 and barely updated since, covers his life as a software engineer in Austin with interests spanning amateur radio, maps, music, skiing, and computers. A built-in Morse Code Translator and links to his blog with OpenSolaris home networking tips make it a small but charming relic of early web culture.
http://zl2ctm.blogspot.com/
Charlie Morris (ZL2CTM) documents his amateur radio homebrew experiments on this technical blog, sharing detailed projects like a 40m Pelican Case SSB transceiver complete with Arduino code for LCD displays and Si5351 synthesizers. A great resource for ham radio enthusiasts interested in building their own transceivers and RF circuits from scratch.
https://swling.com/blog/2026/03/shelfmarks-and-shortwave
The SWLing Post is a dedicated blog covering shortwave listening, ham radio, DXing, SDR technology, and radio broadcasting from around the world. With reviews, program schedules, equipment guides, and community contributions, it's a rich hub for radio enthusiasts of all stripes.
http://csgnetwork.com/hamfreqtable.html
CSGNetwork's Amateur Radio Frequency Table is a comprehensive reference listing all US ham radio band allocations, including mode restrictions, calling frequencies, and licensing class privileges across bands from 160 meters to microwave. Part of a larger calculator and reference site, it also links out to related frequency tables for CB, FRS, marine VHF, cellular, and cordless phone bands.
https://chicagofmclub.org/
The Chicago FM Club (CFMC) is a Chicagoland amateur radio club established in 1965 with over 150 members, operating five repeaters and hosting nightly nets, monthly fox hunts, and the annual Radio Expo ham fest. The site covers club membership, FCC exam testing, public service events, and social gatherings for hams in the greater Chicago area.
http://aprs.net/
Steve Dimse's site introduces APRS (Automatic Position Reporting System), a ham radio-based network for transmitting GPS position reports, weather data, and messages, with an interactive Java applet showing live amateur radio operator positions in South Florida. The site showcases Steve's own contribution to APRS: the internet gateway software (javAPRS) that bridges local ham radio packets to the web for real-time map display.
http://wa3key.com/collins.html
WA3KEY's Virtual Collins Radio Museum, created by Norman Drechsel, catalogs the full range of Collins Radio Company amateur equipment from 1946 through 1995, with individual pages for transmitters, receivers, transceivers, and accessories. A rich reference for ham radio collectors and restorers, the site also includes advertisement archives, parts and service vendor listings, and collector club resources.
https://qth.com/ka9fox
Scott Neader KA9FOX runs this long-standing ham radio site out of La Crosse, Wisconsin, focused on contesting and DXing with resources like contest score rumors, QSL info, DX bulletins, and mailing list summaries. Featured in QST Magazine, RSGB Radio Communication, and numerous other publications, this site has been a go-to hub for contesters and DXers since April 1995.
https://openrepeater.com/
The OpenRepeater Project is an open-source initiative to build a low-cost, Linux-based amateur radio repeater controller using single-board computers like the Raspberry Pi. Managed by N3MBH, the site offers downloads, a knowledge base, setup guides, and community forums for ham radio operators looking to build their own duplex repeater systems.