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/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://kvarc.org/
The Kaw Valley Amateur Radio Club (KVARC), callsign W0CET, has been serving amateur radio operators in Topeka, Kansas since 1926. The site provides club members and prospective hams with meeting schedules, repeater information, licensing education resources, newsletters, and event calendars.
http://members.chello.at/natura/shrew/index.html
Created by Werner Haberl, this scholarly hub is dedicated entirely to the biology of shrews (Soricidae), featuring a bibliography, photo gallery, newsletter, congress announcements, and a forum for zoologists worldwide. Awarded 'Coolest Science Site' in 1996 and mentioned in BBC Wildlife Magazine and Encyclopedia Britannica Online, it remains a remarkably deep and specialized resource for both researchers and curious naturalists.
https://www.qsl.net/la5ki/org.htm
LA5KI hosts an extensive photo archive of vintage ham radio equipment, organized by manufacturer and spanning dozens of classic brands like Collins, Hallicrafters, Heathkit, and Hammarlund. With over 60 images catalogued across rare and iconic mid-century radio manufacturers, this site is a visual treasure trove for vintage radio collectors and enthusiasts.
http://www1.phys.vt.edu/~jhs/astroclb/index2.html
The Astronomy Club of Virginia Tech hosts this homepage for students and enthusiasts interested in stargazing, telescope use, and observing events at the Prices Fork Observatory. Visitors will find meeting schedules, officer contacts, club photos, and a curated set of observing tools including Messier maps and monthly sky charts.
https://www.qsl.net/ve2ccr
Le Club de Radio Amateur de Charlevoix is a French-language amateur radio club based in the Charlevoix region of Quebec, Canada. The site serves as the online home for the club, welcoming members and visitors interested in ham radio activity in this regional community.
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://www.qsl.net/dk7zb/start1.htm
DK7ZB's technical antenna resource covers Yagi antenna design, the 28-ohm matching technique, and constructions for amateur radio bands including 2m, 6m, and shortwave. A deep dive into high-gain antenna building for ham radio enthusiasts, featuring the DK7ZB-Match and EME (Earth-Moon-Earth) related content.
https://atn-tv.org/
The Amateur Television Network (ATN) is a national organization for ham radio operators interested in amateur television transmission, with regional chapters across Arizona, California, Colorado, and beyond. The site features decades of meeting photos, repeater coverage maps, membership rosters, streaming events, and information on digital ATV technology.
http://edsradio.com/
Ed's Radio (AA6ED) is a comprehensive amateur radio resource focused on the Greater Los Angeles Area, covering local clubs across four counties, VHF/UHF nets organized by day, licensing exams, and swap meets. The site also includes educational content on basic electronics, Morse code, Q codes, and band plans, making it a handy reference for both new and experienced hams in Southern California.