Science & Nature
1439 sites
Subcategories:
- Astronomy & Space (396)
- Chemistry (8)
- Earth Sciences (26)
- Biology (79)
- Physics (30)
- Mathematics (59)
- Weather & Climate (104)
- Amateur Radio (682)
- Electronics (47)
https://www.qsl.net/ur4eyn
UR4EYN is a Ukrainian amateur radio club station page hosted on QSL.net, the classic hub for ham radio operators worldwide. The site serves as an online presence for the club, likely featuring callsign information, station details, and contact data for fellow operators.
http://setileague.org/
The SETI League is a nonprofit membership organization dedicated to the privatized electromagnetic search for extraterrestrial intelligence, coordinating amateur radio astronomers worldwide in the hunt for signals from other civilizations. The site offers extensive technical resources covering antennas, receivers, and software, alongside publications, press releases, and the popular "Ask Dr. SETI" column.
https://astrosystems.biz/
AstroSystems is a Colorado-based manufacturer selling telescope kits, accessories, and components including their signature TeleKit truss tube Dobsonians, secondary mirrors, laser collimators, and digital setting circles. With worldwide shipping and a broad catalog spanning fast f/ratio optics to dew removal systems, this site is a go-to resource for amateur telescope makers and Dobsonian enthusiasts.
https://user.xmission.com/~uarc
The Utah Amateur Radio Club (UARC) is a long-established ham radio club based in Kearns, Utah, offering members access to repeaters, HF remotes, a lending library, and an 'Elmer' mentorship list. The site covers club events like Field Day and potluck dinners, exam schedules, net schedules, and resources for both new and experienced amateur radio operators in Utah.
https://www.qsl.net/af4nj
The QSL.net file directory for AF4NJ hosts a rich collection of ham radio resources including DX maps, LOTW logs, solar data, weather lab files, and audio recordings. Folders referencing ARRL, WWV, DXMAP, and warning maps point to an active amateur radio operator with interests spanning propagation, weather monitoring, and emergency communications.
https://reflector.org/
The Springfield STARS is an amateur astronomy club based in Western Massachusetts, holding monthly meetings at the Springfield Science Museum from September through May. Visitors can find astronomy articles, outreach events, and club meeting details, making it a welcoming hub for stargazers in the region.
https://cobaltpet.blogspot.com/
Run by a Northern California hobbyist known as 'weatherall', this blog chronicles shortwave and mediumwave radio listening with detailed reception reports, SIO signal quality codes, station identifications, and portable receiver reviews. Covering international broadcasters, number stations, utility signals, NDB logs, and DXing tips, it's a thorough record of the hobby for fellow shortwave enthusiasts.
https://valleystargazers.com/
The Shenandoah Valley Stargazers (SVS) is an amateur astronomy club based in the Staunton, Waynesboro, and Harrisonburg, Virginia area, offering observing events, astrophotography, education, and community outreach. The club operates its own observatory in Stokesville, VA and welcomes families, groups, and the public to explore the night sky together.
https://qsl.net/n9zia
Green Bay Professional Packet Radio (GBPPR) is a Wisconsin-based amateur radio and electronics research group with working divisions covering RF design, packet radio, signal interception, and open-source hardware projects. The site is a deep technical resource featuring homebrew RF amplifiers, spectrum analyzers, frequency transverters, wireless data links, and a long-running zine packed with experimental electronics content.
https://wz5bbs.com/radio
WZ5BBS is the amateur radio station page of an Amateur Extra class licensee, cataloging an impressive shack setup including Icom, Kenwood, and Yaesu radios alongside Diamond and Chameleon antennas. The site tracks APRS iGate activity, multiple logbooks like POTA and Logbook of the World, fox hunting events, and club memberships with the Oak Hill and Austin Amateur Radio clubs.