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://bitxhacks.blogspot.com/
BITX Hacks is a technical blog by Pete N6QW dedicated to modifications, hacks, and experiments with the BITX40 and uBitx transceiver boards. Posts cover hands-on hardware tweaks like display upgrades, inline fuse wiring, and external linear amplifier controls, making it a practical resource for amateur radio homebrewers.
http://dibonsmith.com/graphics.htm
Created by Richard Dibon-Smith, this site provides graphics and reference information for all 88 officially recognized constellations, from Andromeda to Vulpecula. Each constellation gets its own dedicated page, making it a handy visual reference for amateur astronomers and sky-watchers.
https://swling.com/blog
The SWLing Post is a richly detailed blog dedicated to shortwave listening, ham radio, DXing, and all things radio, run by Thomas and a community of contributors. Visitors will find equipment reviews, broadcast schedules, numbers station reports, SDR guides, and news spanning pirate radio to vintage receivers.
http://homingin.com/
Maintained by Joe Moell (K0OV) since 1988, Homing In is a comprehensive resource dedicated to radio direction finding, foxhunting, and amateur radio direction finding (ARDF) competitions worldwide. Visitors will find news about international championships, technical projects, equipment guides, event results, wildlife tracking applications, and a wealth of articles spanning decades of expertise in the hobby.
https://qsl.net/n9zia
Green Bay Professional Packet Radio (GBPPR) is a Wisconsin-based amateur radio and electronics research group with working divisions covering RF design, packet radio, signal interception, and open-source hardware projects. The site is a deep technical resource featuring homebrew RF amplifiers, spectrum analyzers, frequency transverters, wireless data links, and a long-running zine packed with experimental electronics content.
http://cordell.org/
Cordell Expeditions is a site dedicated to exploration and expedition activities, likely covering adventures, field research, or scientific trips into the natural world. The name and framing suggest a group or initiative organized around outdoor discovery and expedition-based work.
https://irts.ie/cgi/index.cgi
The Irish Radio Transmitters Society (IRTS) is Ireland's national amateur radio organization, offering licensing guidance, club directories, contest calendars, and membership services for ham radio enthusiasts across the country. Affiliated with the International Amateur Radio Union, the site serves as a central hub for Irish operators with resources covering repeaters, beacons, DXCC standings, awards, and emergency communications.
https://qsl.net/w6ddx
The High Desert DX Association (HIDEXA) is an amateur radio club based in the High Mojave Desert of California, dedicated to DX (long-distance) radio communication. This page is a redirect notice pointing visitors to the club's new callsign and website location at W6EFB.
https://www.qsl.net/e2
Electronic Communications 2000 (E-2) is an amateur radio club founded by Jason Foster, now a member of the Foundation for Amateur Radio, with divisions covering topics like radio broadcasting. The site includes club officers, member listings, and news about the club's activities, including a column in the FAR publication AutoCall.
http://abmedia.com/astro
Chris Cook's extensive astrophotography portfolio spans nearly four decades of celestial imaging, featuring deep sky objects, comets, eclipses, auroras, and stunning nightscape photography captured on both film and digital equipment. With NASA APOD features, astrophotography workshops, and a vast archive organized by technique and subject, this is a remarkable showcase of dedication to the craft.