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/ac6xi
AC6XI's personal amateur radio homepage, featuring a link to a how-to page and contact information for this licensed ham operator. The site is sparse but serves as a basic online presence for the callsign AC6XI, with promises of future updates.
https://ve7sar.blogspot.com/
The digital home of the SARC Communicator, the newsletter of Surrey Amateur Radio Communications (VE7SAR) based in Surrey, BC, Canada. Each issue is packed with homebrew projects, DX expedition reports, radio history features, and equipment reviews, making it a rich resource for ham radio enthusiasts of all experience levels.
https://hflink.com/
HFLINK is the international hub for ALE (Automatic Link Establishment) high-frequency ham radio communications, covering HF interoperability, selective calling (SELCALL), and emergency communications. Visitors can find ALE frequencies, band guides, software resources, propagation data, and archives from HF interoperability exercises dating back years.
http://johncath.force9.co.uk/radio%20projects.htm
John Cath's radio project pages feature detailed amateur radio construction projects including a 17-page guide to building a 600W 50MHz solid state amplifier and a power splitter for 70cm. The site reproduces designs from RadCom magazine and the Radio Society of Great Britain, making it a useful reference for ham radio builders and experimenters.
https://www.qsl.net/by2hit
The official web presence of the BY2HIT Amateur Radio Club at Harbin Institute of Technology in Harbin, China, reachable via the QSL.net callsign network. The site provides QSL card mailing information and serves as a landing page for this university-based ham radio club.
http://sunstarfrance.com/
Olly Penrice runs this site combining a French gite rental property called Les Granges with a serious passion for astrophotography in the dark skies of Provence. Visitors can browse astro imaging galleries, explore local cycling and climbing, and even book a stay at the gite to experience the region firsthand.
https://panspermia.org/
Cosmic Ancestry is a deep-dive scientific resource exploring the theory of panspermia, arguing that life on Earth originated from space and that all evolutionary innovation depends on genetic material of cosmic origin. The site covers astrobiology, comets as delivery systems, interstellar dust, the work of Fred Hoyle and Chandra Wickramasinghe, and presents extensive evidence comparing Darwinism with the Cosmic Ancestry hypothesis.
https://hamtv.com/
Ham TV is a comprehensive resource for Amateur Television (ATV) run by Tom O'Hara W6ORG, the retired owner of P.C. Electronics, which supplied ATV equipment to ham radio operators for 50 years. Visitors will find technical guides, antenna recommendations, transmitter specs, application notes, and a wealth of practical information for getting started with live color video transmission on amateur radio bands.
http://faqs.org/faqs/space
The faqs.org Space Index is a comprehensive archive of Usenet FAQs dedicated to astronomy and space topics, covering everything from acronyms and data sources to how to become an astronaut and controversial space questions. Maintained across dozens of indexed documents, it serves as a structured reference hub for space enthusiasts and researchers seeking archived FAQ documents from the early internet era.
http://wala.org/
WALA, the Western Amateur Linking Association, is a Southern California ham radio club focused on IRLP (Internet Radio Linking Project) networking, connecting operators across multiple repeaters throughout California and beyond. The site hosts news, operating guidelines, node status, and recordings of notable QSOs, including a memorable on-air conversation with Los Angeles radio personality Shotgun Tom Kelly.