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://www.qsl.net/redoakarc
The Red Oak Victory Amateur Radio Club (ROVARC) is an ARRL-affiliated ham radio club based aboard the SS Red Oak Victory, a WWII Victory Ship docked in Richmond, California. Club members have restored the ship's original radio room to operating condition and operate on the ham bands under callsigns K6YVM and NY6CI, blending maritime history with amateur radio.
http://blackcanyonastronomy.com/
The Black Canyon Astronomical Society (BCAS) is an amateur astronomy club serving Western Colorado, offering public meetings, star parties, dark sky preservation efforts, and outreach programs to schools and community groups. The site features a calendar of events, astrophotography gallery, observing highlights, and information on joining the Astronomical League.
https://www.qsl.net/w6ka
The W6KA Pasadena Radio Club is the official web presence for a California-based amateur radio club serving the Pasadena and Altadena area. The page serves as a gateway to the club's main sites and connects visitors to the Amateur Radio World Ring webring network.
https://qsl.net/n2jac/jota99/jota99.html
N2JAC documents their participation in Jamboree On The Air (JOTA) 1999, an annual event where Scouts around the world connect via amateur radio, held at Webster Park in Webster, New York. The page is a photo gallery featuring fellow operators like John W3OAB and Irv AF2K, offering a snapshot of grassroots ham radio community events from the late 1990s.
https://vu2ese.com/
Ashhar Farhan (VU2ESE) is an Indian radio amateur who designs and builds his own transceivers, SDRs, and test equipment, sharing full schematics and source code freely with the builder community. Highlights include the BITX SSB transceiver, the hackable sBitx SDR with integrated FT8 support, and a growing collection of homebrew test gear like spectrum analyzers and tone generators.
https://www.qsl.net/o/on6dv/on6dv_hamlinks.htm
ON6DV Daniel's massive ham radio link directory collects nearly 3,900 categorized links covering everything from boat anchors and QRP clubs to DX clusters, SSTV, EME, and repeaters. Maintained weekly, it spans dozens of subcategories and serves as a comprehensive jumping-off point for amateur radio enthusiasts worldwide.
Far Circuits
NEW!
https://farcircuits.net/
Far Circuits is a long-running manufacturer and supplier of printed circuit boards designed specifically for amateur radio and electronics hobbyist projects, operating out of Dundee, Illinois for over 35 years. Visitors can browse and order boards organized by category including audio amps, frequency standards, converters, keyers, battery chargers, and direction-finding projects, with ordering handled through PayPal.
https://planetary.chem.tufts.edu/Phoenix/index.html
A page dedicated to NASA's Phoenix Mars Scout Mission, hosted on a Tufts University chemistry server, featuring launch videos including a close-up NASA recording and a team footage from Cocoa Beach in August 2007. It offers a glimpse into the excitement surrounding the Phoenix lander's launch, which went on to study the Martian arctic soil.
https://sagan.diletante.net/
A fanlisting dedicated to the beloved astronomer and science communicator Carl Sagan, gathering fans from around the world who admire his work and legacy. Built and maintained by a fan known as C.:., the site includes information about Sagan, membership listings, and links to related resources.
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.