Science & Nature
1413 sites
Subcategories:
- Astronomy & Space (390)
- Chemistry (7)
- Earth Sciences (24)
- Biology (76)
- Physics (29)
- Mathematics (51)
- Weather & Climate (100)
- Amateur Radio (681)
- Electronics (45)
https://mnrepeaters.org/
The Minnesota Repeater Council is the official coordinating body for amateur radio repeaters across Minnesota, maintaining frequency coordination, band plans, and membership records for ham radio operators statewide. Visitors can download the current MN repeater listing in multiple formats, access coordination forms, review access plans, and find meeting details including Zoom links for upcoming MRC sessions.
https://qsl.net/wwvarc
The White Water Valley Amateur Radio Club of Richmond, Indiana operates under club callsign N9JM and maintains this site as an informational hub for local ham radio enthusiasts. Visitors can find repeater frequencies, net schedules, club newsletters, officer contacts, and photos from special events like the McMaze Daze station operation.
https://www.aosny.org/AOSLinksIndex.htm
The Amateur Observers' Society of New York maintains this comprehensive links directory covering astronomical magazines, podcasts, space agencies, comet and meteor shower resources, astronomy apps, dealers, and member websites. A well-organized gateway for amateur astronomers in the New York area, the page also highlights member-exclusive discounts on publications like Sky and Telescope and Astronomy Magazine.
https://mods.dk/
mods.dk is a comprehensive database of over 6,000 modification and repair articles for amateur radio equipment, covering major brands like Icom, Kenwood, Yaesu, and Motorola. Hobbyists can find instructions for extending transmit/receive ranges, improving packet modem performance, and getting more out of their HAM radio gear.
http://deep-sky.co.uk/asterisms.htm
David Ratledge's guide to observing asterisms takes readers through a collection of star patterns visible through binoculars and small telescopes, complete with images and observing tips. Inspired by a 1998 Sky & Telescope article, this page celebrates overlooked celestial dot-to-dot patterns like Kemble's Cascade, the Coathanger, and the ET Cluster with genuine enthusiasm and hands-on detail.
http://ccas.us/
The Chester County Astronomical Society (CCAS) is a Pennsylvania-based non-profit bringing together amateur astronomers through monthly meetings, observing sessions, and public star parties for schools and civic groups. The site features an events calendar, member photography, planetarium show schedules at West Chester University, and resources for anyone interested in exploring the night sky.
https://newsvhf.com/
The North East Weak Signal (N.E.W.S.) Group is an ARRL-affiliated club dedicated to VHF, UHF, SHF, and microwave amateur radio operation, with over 100 members sharing technical expertise on bands from 50 MHz to light. The site hosts meeting schedules, membership information, and an extensive archive of Eastern VHF/UHF/Microwave Conference proceedings dating back to 2009.
http://web.ticino.com/wlog2000/wlog
WLOG2000 is a ham radio logbook software project by Swiss operator HB9OAB, offering a professional Windows-compatible logging application for amateur radio, CB, SWL, and BCL operators. The site features software downloads, Yaesu transceiver reviews, DXpedition logs, and the WASL Lakes Award program, making it a rich resource for the ham radio community.
https://ve7sar.blogspot.com/2026/03/the-sarc-communicator-march-april-2026.html
The digital home of the SARC Communicator, the newsletter of Surrey Amateur Radio Communications in Surrey, BC, this blog publishes bi-monthly issues packed with homebrew projects, DX expedition reports, radio equipment reviews, and amateur radio history. Each edition offers hands-on technical content alongside club news, making it a rich resource for ham radio enthusiasts of all experience levels.
https://qsl.net/qarg
The Quincy Area Repeater Group (QARG) was a club of licensed amateur radio operators in West Central Illinois who established and maintained the 147.195MHz 2M repeater serving the Quincy, Illinois and North Eastern Missouri area. The site serves as a historical record of the group's 18-year operation before transferring control to the Western Illinois Amateur Radio Club, including a full list of charter members and their callsigns.