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://aurorawatch.lancs.ac.uk/
AuroraWatch UK is a free alert service run by scientists at Lancaster University's Space and Planetary Physics group, notifying users when the aurora borealis might be visible from the UK. The site offers real-time magnetogram plots, activity stackplots, a map, and multi-channel alerts via email, Twitter, Telegram, and more.
https://tropicalweather.net/hurricane-and-travel-message-board
A community message board dedicated to hurricane tracking and tropical weather forecasting, covering Atlantic, Caribbean, Gulf of Mexico, and Pacific storm systems. Members discuss current tropical cyclones, share National Hurricane Center updates, and maintain seasonal archives dating back through multiple hurricane seasons.
https://qsl.net/wo8hio
The Maumee Valley Contest Club is an amateur radio organization based in the Maumee Valley region, focused on competitive ham radio contesting and DX activities. The site serves as a hub for members and visitors, offering links to major contesting resources, propagation tools, contest calendars, and DX bulletins.
https://nerepeaters.com/
The New England Repeater Directory (NERD) is a volunteer-maintained database of amateur radio repeaters across the New England region, updated nightly to ensure accuracy. Visitors can search listings by location and band, plot results on Google Maps, and download the full database as a CSV file for use with radio programming software.
https://ure.es/
The Unión de Radioaficionados Españoles (URE) is Spain's national amateur radio association and the Spanish section of the IARU, serving as the official body representing ham radio operators across the country. The site offers licensing information, exam guidance, contest calendars, QSL traffic resources, a webcluster, a members-only area, and a regularly published magazine called Radioaficionados.
https://kb3lyb.com/
KB3LYB is an amateur radio blog by a Pittsburgh-area ham documenting technical projects like setting up an Echolink node for the W3EXW repeater on 147.090MHz. The site includes detailed wiring diagrams, hardware bill-of-materials, and Raspberry Pi/SvxLink configuration notes useful to other hams attempting similar builds.
https://www.qsl.net/dx1cw
The official web home of CW Philippines (Communications World of Amateurs Philippines Inc.), a ham radio club based in Manila that documents DXpeditions to Philippine islands including Batan, Marinduque, and Lubang. The site features expedition photo galleries, contest results, QSL information, membership resources, and articles about amateur radio culture and leadership in the Philippines.
https://kb6nu.com/
Dan Romanchik (KB6NU) runs this long-running amateur radio blog covering news, equipment reviews, licensing study guides, and community happenings in the ham radio world. Notable features include No Nonsense study guides for Technician, General, and Extra class licenses, along with commentary on everything from MFJ equipment to repeater guides.
https://kb0dco.tripod.com/
KB0DCO's ham radio homepage serves as both a personal shack page and an informal hub for the Crow River Amateur Radio Club in Minnesota, featuring DX logs, a QSL gallery, repeater and net information, and club event updates. The operator is active in ARES, Metro SkyWarn, and serves as Highway Committee and Field Day Chairman, making this a well-rounded window into a busy ham's on-air and community life.
https://qsl.net/k3mx
The Tri-State DX Association (K3MX) is an amateur radio club based in Matamoras, Pennsylvania, serving operators near the New York and New Jersey borders with a focus on HF DX chasing and contesting. Founded in 1996, the club logs contest results like the Pennsylvania QSO Party and emphasizes emergency traffic handling, international goodwill, and good station engineering.