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://electriciantraining.tpub.com/14182
A comprehensive online reference covering the U.S. Navy's NEETS Module 10, this resource walks through wave propagation, transmission lines, and antenna theory with detailed chapters on electromagnetic fields, radio wave propagation, and sound waves. Published by Integrated Publishing, it offers the full technical training manual with options to download as PDF or order in print, making it a valuable reference for electronics students and hobbyists alike.
https://ifip.com/wa8phd.htm
WA8PHD is the personal ham radio page of Terry Morris, a no-code license pioneer who shares his remarkable story of teaching Morse code to a stroke survivor with aphasia and dyslexia. The site covers a wide range of amateur radio equipment, antennas, weather information, and personal interests including photography and travel.
https://batc.org.uk/
The British Amateur Television Club (BATC) is the world's largest organization dedicated to Amateur Television (ATV), covering everything from digital TV transmission and microwave amplifiers to live video streaming and vintage camera restoration. Members enjoy access to a forum, wiki, YouTube channel, technical handbooks, contests, and an annual UK convention bringing together ATV enthusiasts from around the globe.
http://radiowrench.com/sonic/index.html
A long-running free resource archive started in 1997 offering downloadable manuals, service documents, and technical diagrams for VHF/UHF radios, repeaters, antennas, and related RF equipment. The site hosts PDFs covering everything from GE MVP repeater manuals to tone decoder boards and duplexer specs, making it a valuable reference for amateur radio operators and radio technicians.
https://benholcomb.com/storm-chasing/links
Ben Holcomb's storm chasing hub features an extensive links directory connecting visitors to fellow storm chasers, meteorology resources, and severe weather organizations. With over 400 storm chasing posts logged and sections covering tornado videos, pictures, past chase statistics, and equipment, this is a serious enthusiast's personal record of years spent pursuing severe weather.
https://sprott.physics.wisc.edu/pickover/home.htm
The personal homepage of prolific author and inventor Clifford A. Pickover, featuring links to his 50+ books spanning fractals, chaos, black holes, the fourth dimension, and the mathematics of reality. With 800 patents, a sprawling collection of puzzles, art, and cosmic questions, this site is a portal into the mind of one of science's most imaginative popularizers.
http://aamerican.com/aclr
The Amateur Cross Link Repeater Club (ACLR) was a Chicago-area ham radio repeater club operating on 147.225MHz that disbanded in 1998 after internal disputes and equipment failures. The site serves as a historical archive of the club's activities, meetings, and Dayton hamfest adventures, maintained by trustees Gregory K9OY and Ann K9OYN.
https://radioring.neocities.org/
The Radio Ring is a Neocities-based webring connecting personal websites whose owners share a love of radio, welcoming both amateur radio enthusiasts and casual fans alike. Built on the onionring framework, it offers simple join instructions and links members together in a navigable loop.
https://www.qsl.net/kg4dwj
The Florida Trackers Society is an amateur radio club based in Florida dedicated to ARDF (Amateur Radio Direction Finding), foxhunting competitions, and Skywarn storm tracking in coordination with the National Weather Service. Founded in 1999 under the callsign KG4DWJ, the site covers club membership, foxhunt rules, Doppler weather tracking vehicles, and upcoming events for ham radio enthusiasts across the state.
http://neofoundation.org/astrolabe
The Astrolabe Astronomy Club is a local amateur astronomy club based in Wheeling, WV, offering information on membership, meetings, and events for stargazing enthusiasts. Created by Pat Plunkett, this early-2000s club site serves as a community hub for sky watchers in the West Virginia area.