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://wt4ra.org/
The Western Tidewater Radio Association (WTRA) is an ARRL-affiliated amateur radio club serving Isle of Wight, Surry, and Southampton Counties in Virginia. The site lists upcoming events like QSO parties, flea markets, and Field Day, plus club resources including repeater info, ARES emergency communications, membership rosters, and weather service links.
https://centexastronomy.org/
The Central Texas Astronomical Society operates Meyer Observatory and the Turner Research Station near Clifton, Texas, hosting public open houses and member star parties with large-aperture telescopes. Their mission spans stargazing outreach, astrophotography, astronomy education, and research for both newcomers and experienced observers in the Central Texas region.
https://f1rum.fr/
F1RUM's blog is a French amateur radio enthusiast's personal journal covering topics like Meshtastic mesh networking, Morse code learning challenges, SOTA field operations, SDR hardware, and digital modes like MFSK. The site also includes a logbook and digimap, and participates in the Fediverse.Radio web ring, making it a genuine hub for the radioamateur community.
https://gsbarc.org/
The Great South Bay Amateur Radio Club (GSBARC) has served the Babylon, NY area on Long Island for over 55 years, coordinating public service events, emergency communications through ARES/RACES, and licensing education. Visitors can find club newsletters, repeater information, net schedules, upcoming contest dates, and special event certificates all in one place.
http://echolink.org/
EchoLink is the home of a widely-used software platform that lets licensed amateur radio operators connect with each other worldwide via the internet using streaming audio technology. With over 350,000 validated users across 159 countries and apps available for Windows, Android, iOS, and web browsers, it is a cornerstone tool in the modern ham radio community.
https://qsl.net/swlham
Mike (KC9LDO) runs this amateur radio hub packed with real-time propagation data, DX news feeds, solar and geomagnetic condition monitors, and links to DX logs and QSL resources. It serves as a handy dashboard for ham radio operators interested in VHF, DX chasing, and band conditions across multiple frequencies.
http://nmia.com/~roberts/robert.html
Robert Smathers maintains this personal hub dedicated to TVRO (Television Receive Only) satellite reception, featuring links, schedules, mail lists, newsgroups, and dealer resources for satellite hobbyists. The site also touches on visual satellite observing and space topics, making it a useful reference point for backyard dish enthusiasts.
http://amasci.com/amateur/elehob.html
Bill Beaty's Electronics Hobbyist page is a sprawling directory of resources for electronics enthusiasts, covering surplus suppliers, schematics archives, robotics, embedded processors, Tesla coils, and electrostatics projects. It also includes Bill's own articles on electricity fundamentals, common misconceptions, and hands-on science experiments, making it a rich hub for both beginners and seasoned hobbyists.
http://users.marktwain.net/aschmitz/home.html
KB0YKI's Radio Zone is Aaron Schmitz's amateur radio resource featuring antenna building hints, gamma match plans, repeater building guides, and online tools like a Yagi designer and J-Pole designer. The site also includes a QSL card maker, regional scanner frequencies, and a repeater map, making it a handy reference for ham radio hobbyists.
https://w7dk.org/
The Radio Club of Tacoma (W7DK) is a nonprofit organization serving FCC-licensed ham radio operators in Pierce County, Washington and the South Puget Sound region. Members and visitors can find information on club meetings, repeaters, license exams, emergency communications, and the W7OS Antique Radio Museum.