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://xjubier.free.fr/en/site_pages/solar_eclipses/ASE_1984_GoogleMapFull.html
Xavier Jubier's interactive Google Map traces the path of the May 30, 1984 annular solar eclipse across the USA, offering a detailed geographic visualization of this historical celestial event. Part of a larger solar eclipse resource site, this page lets visitors explore the eclipse path with precision using interactive mapping technology.
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.
http://mndmr.net/
MNDMR.net is the home of Minnesota's first in-house DMR repeater CBRIDGE network, providing information about connected repeaters, talkgroups, and codeplugs for digital radio users in the region. The site serves the local amateur radio community with resources for the MNSTATE and MNTAC talkgroups on the Brandmeister network.
https://bara.org/
The Bergen Amateur Radio Association (BARA) is a New Jersey-based ham radio club serving Bergen County, with monthly meetings, weekly nets, VE exams, and semi-annual hamfests. Members range from antenna specialists to digital mode enthusiasts, and the club has a strong tradition of technical knowledge sharing and community participation.
http://wb6noa.com/
WB6NOA appears to be the personal amateur radio site of a licensed ham operator, identifiable by the callsign-based domain name. The site uses a frames-based layout typical of early web design, suggesting a hobbyist page dedicated to ham radio activities and interests.
https://atn-tv.org/
The Amateur Television Network (ATN) is a national organization for ham radio operators interested in amateur television transmission, with regional chapters across Arizona, California, Colorado, and beyond. The site features decades of meeting photos, repeater coverage maps, membership rosters, streaming events, and information on digital ATV technology.
https://dxing.com/
DXing.com is a comprehensive reference site sponsored by Universal Radio Research, covering shortwave listening, scanner monitoring, ham radio, pirate radio, numbers stations, and more. Originally created by noted author Harry Helms, it features receiver surveys, frequency guides, QSL reporting tips, and columns from well-known radio writers like Glenn Hauser and Don Schimmel.
https://kb9ocq.tripod.com/CW
A reference page by KB9OCQ dedicated to Morse code (CW) abbreviations and Q-signals used in amateur radio communication. It covers everything from common shorthand like TU and B4 to a full table of Q-codes with their question and statement meanings, making it a handy quick-reference for ham radio operators.
http://virtualcolony.com/sac
The Deep Sky Database is an online observing list generator for amateur astronomers, drawing on the Saguaro Astronomy Club's meticulously maintained databases to help users search for galaxies, nebulae, star clusters, double stars, asterisms, and more. Built on decades of collaborative contributions from club members, it offers searchable access to well-known catalogs including Messier, Caldwell, Herschel 400, and Herschel 2500 objects, making it a practical planning tool for backyard stargazers.
http://collectspace.com/news/news-061209a.html
CollectSPACE covers space history news and milestones, including this detailed article tracking which astronaut became the 500th person to fly into space during the STS-127 shuttle mission in 2009. The site provides a comprehensive numbered list of all 500 spacefarers up to that point, mission by mission, making it a valuable reference for space history enthusiasts.