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)
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.
https://www.qsl.net/9m6aac/old/aacmem.htm
The Hillview Gardens Amateur Radio Club (9M6AAC), based in Keningau, Sabah, Malaysia, maintains this membership directory listing callsigns and contact details for its globally dispersed ham radio members. The roster spans operators from dozens of countries, reflecting the club's mission of promoting worldwide friendships through amateur radio.
https://affy50.tripod.com/Eyepcalc.html
An interactive eyepiece calculator for amateur astronomers that computes magnification and true field of view based on telescope focal length and aperture. It includes a comprehensive built-in database of eyepieces from major brands like Celestron, Meade, Pentax, Vixen, and Zeiss, plus support for custom eyepiece data entry.
https://bcbirdalert.blogspot.com/
BC Rare Bird Alert is a community birding blog tracking rare and unusual bird sightings across British Columbia, Canada, with detailed location reports, maps, and observer notes. Each post documents a specific rare species encounter, making it an invaluable real-time resource for birdwatchers and ornithology enthusiasts in the Pacific Northwest.
http://insti.physics.sunysb.edu/physics/physics_links.htm
Maintained by Stony Brook University's physics department, this extensive link directory covers physics preprints, online journals, conferences, jobs, data sources, and institutions. Researchers and students will find hundreds of curated links spanning Physical Review, arXiv, SLAC SPIRES, astrophysics journals, and community resources like Fermilab and the Nobel Foundation.
https://craq.club/
The Club Radio Amateur de Québec (CRAQ), founded in 1926 and celebrating its 100th anniversary, is one of Quebec's oldest amateur radio clubs, offering membership resources, technical articles, repeater information, QSL cards, and licensing exam preparation. The site includes live HF operation logs, contest schedules, D-STAR networking stats, and a rich archive of club activities and events.
http://ham-radio.com/sbms
The San Bernardino Microwave Society (SBMS) is a non-profit technical club dedicated to amateur radio communications above 1 GHz, serving the Southern California region with monthly meetings, contests, and a rich archive of technical papers. Visitors can find member project presentations, contest results for 10 GHz and 2.3 GHz ARRL events, software tools, and newsletters covering cutting-edge microwave experimentation.
https://eskimo.com/~bgudgel
Bob Gudgel's personal homepage centers on his amateur radio identity as K7IQ, with links to the Puget Sound Repeater Group and interests in Pacific Northwest audio electronics history including TAPCO and other defunct companies. The page also touches on vintage telephone switching, solar energy, and local Seattle-area connections, making it a charming slice of old-web hobbyist culture.
http://normsrotorservice.com/
Norm's Rotor Service is the oldest and largest antenna rotator repair facility in the United States, specializing in sales, service, and parts for ham radio antenna rotators since the 1960s. With an inventory of over 25,000 parts covering brands like Cornell-Dubilier, Hy-Gain, and Telex, this is an essential resource for amateur radio operators needing rotor repairs or replacements.
http://astroverde.org/
Astroverde is the official website of the Astronomers of Verde Valley, an amateur astronomy club based in Northern Arizona's Verde Valley region. Visitors can browse member astrophotography galleries, find star party schedules, access observing tools, and learn how to join the club.