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://m1hog.zbm2.com/
Nicolas Pike, callsign M1HOG, documents his journey through amateur radio licensing and builds an impressive collection of construction projects including QRP rigs, homebrew kits, and APRS setups. The site covers special event operating across the UK, Elecraft builds, SDR experimentation, and links to the RepeaterBook app developed by the same operator.
https://www.qsl.net/kb9ocq/index2.html
KB9OCQ's personal ham radio hub offers a comprehensive collection of links and resources covering repeater directories for Indiana cities, Morse code practice, shortwave radio, VHF/UHF news, and emergency services. The site reflects the classic old-web amateur radio community spirit, complete with callsign lookups, hamfest listings, CW abbreviations, and a banner exchange for fellow ham operators.
http://newsuperantenna.com/
Super Antenna Systems Corporation manufactures portable HF antennas designed for ham radio operators, emergency communications, and HF SSB use across all bands from 80 meters through VHF. Their flagship MP1 series antennas collapse into compact go-bag packages, making them popular for portable, mobile, backpack, and EmComm deployments worldwide.
http://findu.com/
findU is a massive 58GB database archiving APRS (Automatic Packet Reporting System) data including weather observations, position reports, vehicle tracking, and telemetry from amateur radio operators worldwide. The site powers real-time weather forwarding to NOAA and the National Weather Service, and even tracks amateur radio payloads aboard the International Space Station.
http://oltw.blogspot.com/
Rachel Sussman's project documenting the oldest living organisms on Earth, from ancient chestnut trees to Siberian actinobacteria, combines scientific curiosity with fine art photography. Each post chronicles her travels to find and photograph these extraordinary subjects, paired with reflections on deep time, survival, and the nature of life itself.
http://parallaxinstruments.com/
Parallax Instruments, Inc. is a small business founded in 1991 that manufactures precision astronomical telescopes, German equatorial mounts, rotating tube rings, aluminum tubing, and observatory piers. Their product lineup includes large-aperture Newtonians, Dall-Kirkham Cassegrains, and custom-built instruments crafted in a fully equipped machine shop for serious amateur and professional astronomers.
http://astroa.physics.metu.edu.tr/bigeyes.html
A comprehensive reference table listing the world's largest optical telescopes, compiled by Bill Arnett and hosted at Middle East Technical University's physics department. Each entry includes the telescope's aperture, name, geographic coordinates, altitude, and technical notes, making it a handy quick-reference for astronomy enthusiasts and researchers.
https://mostlydiyrf.com/
Mostly DIY RF is a specialized resource for amateur radio builders, offering PCB kits and detailed documentation for RF circuits including IF amplifiers, low-pass filters, VFOs, crystal filters, and MMIC amplifiers. The site covers designs by well-known ham radio engineers like Hayward and Kopski, making high-performance transceiver building accessible to hobbyists.
https://tcfmc.org/
The Twin Cities FM Club (TCFMC) is a Minnesota-based amateur radio organization dedicated to emergency communications, community education, and operating local repeater frequencies for ham radio operators in the Twin Cities area. The site features club nets, a weekly swap shop on 146.76, membership sign-up, and resources on technologies like Wires-X, EchoLink, and AllStarLink.
https://stormeffects.com/
Brian Morganti's StormEffects is a personal site dedicated to storm chasing, featuring an extensive collection of storm and landscape photos, chase videos, and chase summaries from real weather events. The site also touches on astrophotography, making it a rich visual record of one enthusiast's pursuit of dramatic natural phenomena.