Amateur Radio
682 sites
http://f5ad.free.fr/
Built by French radio amateur André Ducros (callsign F5AD), this extensive site covers amateur radio antennas, amateur television (ATV), and ham radio licensing with over 616 pages and 2648 images. It includes 1205 practical antenna descriptions ranging from shortwave to microwave, technical documentation, and resources for ATV transmission, making it a remarkable reference archive for French-speaking radio amateurs.
https://www.qsl.net/n1bwt/contents.htm
Paul Wade W1GHZ has published his comprehensive Microwave Antenna Book online, covering everything from parabolic dish antennas and horn feeds to electromagnetic field analysis and antenna range measurements. A deep technical reference spanning 13 chapters with downloadable software tools, this is an essential resource for amateur radio operators working in the microwave frequency bands.
http://navicom.com/~w7saa
A personal page for W7SAA, an amateur radio operator with a callsign-based URL suggesting a ham radio hobbyist presence. The site appears minimal, featuring little more than an image, but the callsign identifier strongly marks it as part of the amateur radio community.
https://morseresource.com/
MorseResource, created by AI4QR, offers tools and resources for learning and improving Morse code skills, including code generators, daily quote MP3 files, and Morse code podcasts. The podcast idea was born from a desire to practice copying code anywhere, making this a practical and inventive hub for amateur radio enthusiasts.
http://bitxhacks.blogspot.com/2017/10/raduino-as-nbfm-tx.html
BITX Hacks is a technical blog by Ashhar Farhan focused on modifications and experiments with the BITX40 amateur radio transceiver boards and Raduino controller. This post walks through a clever 30-minute hack to turn the Si5351 clock generator into a narrow-band FM transmitter using a varactor diode and a simple audio amplifier circuit, complete with Arduino sketch code.
https://1x1callsigns.org/
A dedicated resource for amateur radio operators looking to reserve FCC-authorized one-by-one (1x1) special event call signs for conventions, festivals, and other community celebrations. The site includes an FCC regulations guide, a searchable 1x1 callsign database, coordinator listings, and a reservation request system for temporary station operation.
http://websdr.org/
WebSDR.org is the home of the WebSDR project, a network of software-defined radio receivers accessible via a web browser, allowing anyone to tune into shortwave, amateur radio, and other RF signals from around the world. The site connects users to SDR servers hosted by universities, radio clubs, and hobbyists, making radio listening accessible without any special hardware.
https://wm7d.net/
Mark Downing (WM7D) runs this ham radio hub featuring a searchable callsign database, real-time solar flux reports, and dedicated resource pages for Yaesu radios including the FT2000, FT920, and FT100. Visitors will also find DX cluster links, QSO maps, TR Log for Linux, and a curated collection of amateur radio links.
https://qrp-labs.com/2-uncategorised/44-qrp-labs-shop.html
QRP Labs is a shop and resource hub for amateur radio enthusiasts, offering a wide range of kits including CW transceivers, digital transceivers, GPS receivers, WSPR/QRSS transmitters, and high-altitude balloon trackers. The site features an impressive catalog of homebrew-style radio kits catering to QRP (low power) operators, with supporting documentation, newsletters, and community resources.
https://ifmarc.org/
IFMARC is the official web presence of the Independence FM Amateur Radio Club based in Independence, Missouri, home of the 147.09+ repeater carrying the call sign of late club member Marcell Kurbin (W0TOJ). The site lists club officers, meeting details at St. Mark's United Methodist Church, and contact information for joining the club's email list.