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)
http://amateurlogic.com/blog
AmateurLogic.TV is a long-running ham radio video show and blog covering radio technology, licensing education through its Ham College series, and hands-on gear topics. With archives stretching back to 2005 and content available on YouTube, Roku, Spotify, and Amazon Prime, it offers an impressive breadth of resources for both new and experienced amateur radio operators.
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://w5auu.org/
A ham radio operator's personal site identified by the W5AUU callsign, redirecting visitors to an updated location. The W5 prefix places this operator in the Texas/Oklahoma/Louisiana/Mississippi/Arkansas region, making it a regional amateur radio resource.
http://astrophysical.org/
Astrophysical.org is a scientific popularization site run by Istituto Scientia, covering astrophysics and astronomy with sections on stars, magnitude, an online planetarium, and the SAO star catalog. Visitors can explore topics from stellar spectral classification to cosmology, with links to companion site Astrometry.org for celestial mechanics content.
https://dsimanek.vialattea.net/home.htm
Donald Simanek, a physics professor, has assembled a sprawling collection of resources covering physics puzzles, perpetual motion machines, pseudoscience debunking, creationism criticism, and science humor. Highlights include the Museum of Unworkable Devices, illustrated lectures, and a rich archive of skeptical and educational content that has earned recognition as one of the top skeptical websites on the web.
https://k5rmg.com/
The Roadrunners Microwave Group (RMG) is a Texas-based amateur radio club focused on operation and technical aspects of microwave communications, particularly on bands above 420 MHz and up to 10 GHz. The site lists meeting schedules, weekly nets, activity nights, and resources for hams interested in pushing into the higher frequency bands.
https://w7yrc.org/
The Yavapai Amateur Radio Club (W7YRC) serves ham radio enthusiasts in the Prescott, Arizona area with license classes, repeater information, club events, and public service opportunities. The site offers a wealth of resources including study materials for license exams, a monthly newsletter called the YARC Signal, and details on events like Field Day and the Prescott Hamfest.
http://wxqa.com/
The Citizen Weather Observer Program (CWOP) is a public-private partnership that collects weather data from over 7,000 citizen-operated stations across North America, feeding real-time observations to NOAA and dozens of government agencies. Visitors can join the network, check data quality, view maps and displays, and access resources for setting up their own personal weather stations.
https://hexkit.com/
Ron Mott (W4RDM) runs HexKit.com, a small operation fabricating baseplate kits, hubs, and components for homebrew Hex Wire Beam, Moxon, and Spiderbeam amateur radio antennas. Over 1,700 homebrew hex beam builds have used HexKit baseplates worldwide, making this a well-regarded niche resource for DIY antenna builders.
http://yarc.org/
The Yonkers Amateur Radio Club (W2YRC) is a New York-based ham radio club affiliated with the ARRL, featuring repeater frequencies, EchoLink and WiresX node info, and a full calendar of events including Field Day, fox hunts, and VE testing sessions. Members and visitors can find meeting schedules, study guides, software resources, a photo gallery, and membership renewal options all in one place.