Science & Nature
1424 sites
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- Astronomy & Space (393)
- Chemistry (8)
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- Biology (78)
- Physics (29)
- Mathematics (52)
- Weather & Climate (103)
- Amateur Radio (681)
- Electronics (45)
https://www.qsl.net/kb9ocq/index2.html
KB9OCQ's personal ham radio hub offers a comprehensive collection of links and resources covering repeater directories for Indiana cities, Morse code practice, shortwave radio, VHF/UHF news, and emergency services. The site reflects the classic old-web amateur radio community spirit, complete with callsign lookups, hamfest listings, CW abbreviations, and a banner exchange for fellow ham operators.
https://www.qsl.net/w2vtm
The Victor Amateur Radio Association (VARA), callsign W2VTM, is the employee ham radio club of L-3 Communications Systems East in Camden, NJ, with roots tracing back to the historic Radio Corporation of America (RCA). The site offers club history, hamfest schedules for the South Jersey/Philadelphia metro area, licensing resources, satellite tracking links, HF propagation guides, and a rich heritage connecting members across RCA, GE Aerospace, Martin Marietta, Lockheed Martin, and L-3.
https://www.qsl.net/w5gfc
The W5GFC Greers Ferry Amateur Radio Club serves ham radio enthusiasts in the Ozark foothills of Arkansas, offering club news, repeater listings, VE exam info, QSL cards, and a photo album. Founded in the 1970s, this active club also coordinates emergency communications and hosts a weekly net on 147.330+.
https://bdxc.org.uk/
The British DX Club (BDXC-UK) is the premier UK organization for radio listeners and DXers, covering shortwave, medium wave, FM, and international broadcast schedules. Members get access to guides, propagation data, a monthly bulletin called Communication, and listings of UK and Irish radio stations.
https://iasindy.org/
The Indiana Astronomical Society is a membership-based club dedicated to amateur astronomy, offering monthly public lectures, access to the historic Goethe Link Observatory, dark-sky observing sites, and outreach programs for students across central Indiana. With resources ranging from a beginner Astronomy 101 crash course to star party event listings and a member collaboration site, it serves everyone from curious newcomers to seasoned sky watchers.
https://kb6nu.com/
Dan Romanchik (KB6NU) runs this long-running amateur radio blog covering news, equipment reviews, licensing study guides, and community happenings in the ham radio world. Notable features include No Nonsense study guides for Technician, General, and Extra class licenses, along with commentary on everything from MFJ equipment to repeater guides.
http://choisser.com/packet
Larry Kenney (WB9LOZ) presents an 18-part introductory series on packet radio, originally written in 1988 for the San Francisco Amateur Radio Club newsletter and revised multiple times through the 1990s. The series covers everything from basic concepts and TNC commands to BBS usage, node networks, and the National Traffic System, making it a comprehensive self-study guide for amateur radio operators interested in packet operations.
https://w8dc.org/
The Grand Rapids Amateur Radio Association (GRARA), callsign W8DC, is a Michigan-based amateur radio club offering meetings, license testing sessions, repeater access, and annual events like Field Day and a Hamfest. The site keeps members informed with meeting announcements, minutes, newsletters, and membership information for the greater Grand Rapids area.
http://meteorlab.com/
New England Meteoritical Services (meteorlab.com) is a long-running resource dedicated to everything about meteorites, including identification, appraisal, and high-resolution structural imagery through a companion site covering primary and secondary meteorite structures. The organization has been online since 1994 and served as examiner and appraiser of the historic Huss-Nininger Collection of Meteorites and Tektites, making it a notable reference for both collectors and researchers.
https://brars.cc/
The Blue Ridge Amateur Radio Society (W4NYK) has been serving ham radio operators in Greenville, SC since 1959, operating repeaters on Caesar's Head and Paris Mountain and hosting the longest-running nightly net in South Carolina. The site covers club news, repeater details, VE testing sessions, swap nets, and member resources for the Upstate SC amateur radio community.