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://amateur-radio.net/rptr
Operated by K1IW, this searchable database lets ham radio operators and enthusiasts look up amateur repeaters and broadcast transmitters across all 50 U.S. states, Washington D.C., and Canadian provinces. Users can filter results by band, digital mode (DMR, D-STAR, YSF), distance from a location, and more, with data sourced from official FCC and NFCC coordination records.
https://skokievalleyastronomers.org/
The Skokie Valley Astronomers was a beloved Illinois-based amateur astronomy club that ran for over 50 years, hosting public meetings, presentations, and events dedicated to stargazing and sky watching. The site serves as a farewell archive and resource hub, featuring newsletters, images, and links to other local astronomy clubs for members and enthusiasts to continue their passion.
https://stormgasm.com/
Stormgasm is the storm chasing hub of Jim Bishop, Juston Drake, and Simon Brewer, featuring tornado videos, hurricane footage, supercell photography, and storm chase journals from across the Great Plains and beyond. Visitors can browse a stock footage library, explore photo galleries, and follow the team's active storm chasing adventures in real time.
https://www.qsl.net/w4amc
The Brightleaf Amateur Radio Club (BARC) of Greenville, NC maintains this hub for club members and ham radio enthusiasts, featuring meeting info, membership rosters, newsletters, and emergency preparedness resources. With callsigns W4AMC, W1VOA, and W4UHS, the club covers everything from Skywarn weather spotting to DX activity links and real-time solar data.
https://oevsv.at/home
The ÖVSV (Österreichischer Versuchssenderverband) is the official national amateur radio organization of Austria, covering all nine regional associations and offering resources on licensing, operating modes, contests, and technical information. Visitors can find band plans, contest calendars, QSL card services, satellite radio info, and news about events like HAM RADIO Friedrichshafen and the organization's 100-year anniversary.
https://www.aosny.org/AOSLinksIndex.htm
The Amateur Observers' Society of New York maintains this comprehensive links directory covering astronomical magazines, podcasts, space agencies, comet and meteor shower resources, astronomy apps, dealers, and member websites. A well-organized gateway for amateur astronomers in the New York area, the page also highlights member-exclusive discounts on publications like Sky and Telescope and Astronomy Magazine.
https://www.qsl.net/la5ki/index.htm
LA5KI Vintage Ham Radio is a Norwegian amateur radio operator's site dedicated to vintage ham radio equipment and history. The page features a classic old-web aesthetic and serves as a gateway to content about antique radio gear and the amateur radio hobby.
http://vacuumtubes.com/
Vacuumtubes.com, run by Jonathan Oas out of Hartland, MN, is an online storefront selling vacuum tubes, electron tubes, tube testers, tube sockets, and related electronic parts organized into extensive alphabetical tube lists. The inventory spans everything from rare Western Electric and antique tubes to popular audio types like the 12AX7, 6L6, and EL34, making it a go-to source for vintage audio and electronics enthusiasts.
http://aberdeenastro.org.uk/
The Aberdeen Astronomical Society (AAS) is a Scottish astronomy club based in Aberdeenshire, hosting regular meetings, dark sky observing sessions, and public talks both in person and via Zoom. The site features aurora photography by members, an interactive star chart for Aberdeen, upcoming event listings, and a night sky section covering visible astronomical events from the local area.
https://rarchams.org/wp
The Rochester Amateur Radio Club (RARC) is an ARRL-affiliated nonprofit based in Rochester, Minnesota, dedicated to advancing amateur radio knowledge and providing public service support to the local community. The site features club meeting minutes going back to 2019, ARES emergency communications resources, Skywarn weather dashboards, repeater information, and a regularly published newsletter called the Hamster.