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://omnicron.com/~ford/ford.html
Mike Ditto's personal homepage, created in 1993 and barely updated since, covers his life as a software engineer in Austin with interests spanning amateur radio, maps, music, skiing, and computers. A built-in Morse Code Translator and links to his blog with OpenSolaris home networking tips make it a small but charming relic of early web culture.
http://normsrotorservice.com/
Norm's Rotor Service is the oldest and largest antenna rotator repair facility in the United States, specializing in sales, service, and parts for ham radio antenna rotators since the 1960s. With an inventory of over 25,000 parts covering brands like Cornell-Dubilier, Hy-Gain, and Telex, this is an essential resource for amateur radio operators needing rotor repairs or replacements.
https://members.wolfram.com/jeffb/poster/poster.html
A detailed educational presentation on cataclysmic variable stars (CVs), covering binary star systems, accretion disks, novae, polars, and outburst phenomena with artist renditions and real observational data. Created by Jeff B. and hosted on Wolfram Research servers, the site features light curves, spectra, and telescope images from Lowell Observatory's 31-inch NURO telescope.
https://qsl.net/ve6ria
A QSL.net-hosted page belonging to the amateur radio operator with callsign VE6RIA, a Canadian ham radio licensee. The site appears to be a personal radio operator page on the popular QSL.net hosting platform for ham radio enthusiasts.
https://casonline.org/
The Calumet Astronomical Society (CAS) maintains this site for their Indiana-based astronomy club, featuring information about the Conway Observatory, a monthly star chart, open house schedules, and meeting details at the Munster Library. Members and stargazers can find membership applications, donation options, and a photo gallery documenting the club's history and activities.
https://qrp-labs.com/
QRP Labs sells a wide range of amateur radio kits including multi-band transceivers, CW rigs, GPS receivers, synthesizers, and high-altitude balloon trackers at budget-friendly prices. The site is a go-to destination for QRP radio enthusiasts who enjoy building their own equipment, with kits ranging from beginner-friendly to highly technical designs like the WSPR balloon tracker.
https://m0yng.uk/
Christopher M0YNG is a radio amateur based in Gloucestershire whose personal site covers amateur radio, solar and battery tracking, self-hosted tech, and small computing projects like the Penkesu Tiny Computer. The site is notably available via Gopher, Gemini, and Tor in addition to HTTP, making it a fascinating example of smolnet philosophy in practice.
https://weca.org/
The Westchester Emergency Communications Association (WECA) has been serving the Hudson Valley region through amateur ham radio since 1972, with a base repeater on 147.06 MHz. The site offers an extensive range of resources including APRS live mapping, ARES/RACES emergency communications info, FCC license exam prep, hamfests, local repeater listings, and SKYWARN weather spotting details.
https://www.was.org.nz/useful-links
The Wellington Astronomical Society maintains this curated links page connecting visitors to astronomy resources across New Zealand and beyond, from national societies to educational tools for children. Organized into regional and international sections, it serves as a handy gateway to observatories, sky guides, STEM activities, and fellow astronomy clubs throughout New Zealand.
https://yb0ah.tripod.com/
H.K. Ardiwinata (YB0AH) built this Indonesian amateur radio resource covering homebrew electronics, circuit diagrams, and equipment manuals collected from personal experience and other ham radio sites. It features sections on basic electronics, ham equipment manuals, and electronics circuit diagrams, making it a useful reference for Indonesian ham radio enthusiasts.