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://www.qsl.net/k0usa
The Ak-Sar-Ben Amateur Radio Club is a ham radio club based in Omaha, Nebraska, serving the greater Council Bluffs area with activities including VE testing, Field Day, SKYWARN weather spotting, and ARES emergency communications. The club's homepage serves as a gateway to member resources, repeater info, hamfests, and ARRL-affiliated programming.
https://www.qsl.net/ai4hb
The Fort Knox Amateur Radio Club (FKARC) serves ham radio enthusiasts in the Fort Knox, Kentucky area, with a focus on DX operations, ARES emergency communications, and VE licensing exams. Visitors will find club meeting schedules, repeater information, constitution and bylaws, J-pole antenna plans, and a broad collection of ham radio links.
https://www.qsl.net/na4sh
The Nash County ARES (Amateur Radio Emergency Service) is a volunteer group serving Nash County and Rocky Mount, North Carolina by providing emergency communications during disasters like hurricanes, floods, and tornadoes. The site covers their weekly nets on local repeaters, links to weather resources, and connections to state and national ARES organizations.
https://gsbarc.org/
The Great South Bay Amateur Radio Club (GSBARC) has served the Babylon, NY area on Long Island for over 55 years, coordinating public service events, emergency communications through ARES/RACES, and licensing education. Visitors can find club newsletters, repeater information, net schedules, upcoming contest dates, and special event certificates all in one place.
http://nu5de.org/
The Naturist Amateur Radio Club (NU5DE) is a unique ham radio club that operates from Star Ranch Nudist Resort in McDade, Texas, combining nude recreation with amateur radio operations. The site showcases their custom QSL cards, including their award-winning 'barefoot' design, and documents their on-air activities during Nude Recreation Week from 2001 onward.
https://n3yrw.tripod.com/index-3.html
Frank N3YRW's ham radio link collection is a curated gateway to the world of amateur radio, covering DX hunting, callsign lookups, equipment dealers, antennas, and upcoming DXpeditions. Packed with dozens of links to resources like QRZ, ARRL, Icom, Yaesu, and DX clusters, this page is a handy one-stop reference for hams of all experience levels.
https://xeno-canto.org/
Xeno-canto is a massive community-driven database of wildlife sound recordings from around the world, covering birds, frogs, mammals, bats, and more, browsable by region or taxonomy. Launched in 2005, it serves researchers, birders, and curious listeners alike with tens of thousands of freely downloadable recordings backed by an open API and active community forum.
https://faraday.physics.utoronto.ca/GeneralInterest/Harrison/Flash
Created by a University of Toronto physicist, this collection features 99 Flash animations covering topics from Quantum Mechanics and Relativity to Chaos and Fluid Mechanics, making abstract physics concepts visually intuitive. A bonus tutorial teaches how to build your own physics animations in Flash, and the animations are available in multiple languages under a Creative Commons license.
http://qsl.at/
DokuFunk is the world's largest archive dedicated to the history of radio and electronic media, based in Vienna with worldwide membership and over six million objects in its collection. The organization focuses on both broadcast radio and amateur radio history, preserving QSL cards and other radio-related artifacts under the motto 'No future without origins.'
https://wm7d.net/hamradio
WM7D dot Net is Mark A. Downing's extensive amateur radio link directory, organized into dozens of categories covering antennas, DX clusters, propagation, QRP, Morse code, satellite info, and much more. With five pages of curated links spanning everything from ARRL headquarters to shortwave and six-meter sites, it serves as a comprehensive reference hub for ham radio enthusiasts.