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/fara
The Framingham Amateur Radio Association (FARA) ran this club hub for ham radio operators in the Framingham, Massachusetts area, featuring meeting schedules, flea market announcements, licensing events, and DX-pedition photos. A great snapshot of an active local amateur radio club from the early 2000s, complete with member callsigns, ARRL news feeds, and resources for newcomers seeking their first no-code license.
http://para.buxcom.net/
The Philadelphia Area Repeater Association (PARA) maintains this club site listing their extensive network of repeaters across the greater Philadelphia region, including Valley Forge, Camden, and surrounding areas. Visitors can find club history dating back to 1971, officer listings, membership info, and links to ARRL and FCC resources for ham radio operators.
https://journal.jcampbell.ca/
Jim Campbell (VE1KM) keeps this personal journal documenting his amateur radio adventures, including Parks on the Air activations, balun testing, 3D-printed ham radio accessories, and Morse Code operating tracked via the Reverse Beacon Network. Live feeds of his recent QRZ contacts, POTA stats, and Mastodon posts make this a genuinely active ham radio log worth bookmarking.
https://mainearrl.org/
The official Maine Section page for the American Radio Relay League covers everything local hams need, including district info, repeater listings, emergency communications nets, and an upcoming hamfest convention in Augusta. Resources for mentors (Elmers), club listings, EMCOMM testing, and multiple nets like the Maine Seagull Net and Maine Public Service Net make this a practical hub for amateur radio operators across the state.
https://www.qsl.net/kc0afx
Oleksandr Dzyubuk (callsign KC0AFX, home call UX7CQ) runs this site from Cherkassy, Ukraine, offering handmade CW Morse keys for sale alongside information about his ham radio activities and local radio communication work. The site also features a radio museum showcasing vintage USSR radios and receivers, plus sections on Ukrainian culture, power tubes, relays, and RF components.
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://www.qsl.net/w4rmt
The Castalia Island DX Association is a ham radio club based in Rocky Mount, North Carolina, dedicated to promoting DXpeditions, HF operation, and working DXCC entities under ARRL program rules. Membership is free and open to anyone interested in DX activity, making it a welcoming hub for amateur radio operators in eastern North Carolina.
https://www.qsl.net/w4frc
The Ft. McCoy Amateur Radio Club (W4FRC) is a friendly ham radio club based in the Ocala National Forest area of Marion County, Florida, founded in October 1997. The site shares club meeting info, VE testing schedules, member photos, and an open invitation for newcomers to discover the hobby of amateur radio.
http://hfpower.com/
ACOM is a manufacturer of HF linear amplifiers and related amateur radio equipment, including the flagship ACOM 2000A automatic amplifier and the ACOM 1000A. The site serves as a product hub for serious ham radio operators seeking high-power amplification solutions built around tubes like the Svetlana 4CX800A.
https://fedastro.org.uk/
The Federation of Astronomical Societies is a UK-based umbrella organization connecting amateur astronomy clubs and societies across Britain. It serves as a hub for coordinating events, sharing resources, and supporting the broader community of stargazers and astronomical enthusiasts in the region.