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://afvl.li/
The Amateurfunk Verein Liechtenstein (AFVL) is the official amateur radio club of Liechtenstein, founded in 1986 and serving operators in the HBØ callsign region. The site covers club activities, DMR and FM repeaters, WinLink access, emergency communications, AREDN mesh networking, and upcoming events like POTA outings and monthly meetups.
https://www.qsl.net/in3vrr
Roberto Vendrame (IN3VRR) out of Bolzano, Italy offers LOGvrr, a freeware amateur radio logging suite featuring a logbook, international callbook with 1.8 million entries, and PacketCluster support. The site provides free downloads of the software in ARJ archives, ISO disc images, and supporting utilities for ham radio operators managing QSOs and LoTW confirmations.
https://www.qsl.net/zl1vk
The Papakura Radio Club (ZL1VK), founded in 1960 and based in South Auckland, New Zealand, serves local amateur radio operators through club meetings, radio nets, technical projects, and emergency communications (AREC). The site includes club history, a newsletter, member pages, contest participation details, and hands-on projects covering APRS, microprocessors, antenna builds, and equipment modifications.
https://dk7ih.de/2022/05/new-post-a-walkie-talkie-ssb-transceiver-for-14mhz-or-the-higher-rf-bands
DK7IH is the personal engineering site of Peter Rachow, a radio amateur who documents his homebrew SSB transceiver builds including QRP multiband rigs, walkie-talkie style transceivers, and SMD-based designs for the 14MHz band and beyond. The site is a detailed technical resource for ham radio enthusiasts interested in hands-on RF circuit construction and design.
https://rocksandminerals4u.com/
Rocks and Minerals 4U is a comprehensive educational resource covering geology topics including rock formation, mineral identification, plate tectonics, and the rock cycle, with dedicated pages for igneous, metamorphic, and sedimentary rocks. Designed for collectors, students, homeschoolers, and teachers, the site offers lesson plans, crossword puzzles, photo galleries, and even a shop for rock and mineral specimens.
https://www.qsl.net/w4rmt
The Castalia Island DX Association is a ham radio club based in Rocky Mount, North Carolina, dedicated to promoting DXpeditions, HF operation, and working DXCC entities under ARRL program rules. Membership is free and open to anyone interested in DX activity, making it a welcoming hub for amateur radio operators in eastern North Carolina.
http://elasmo.com/
Elasmo.com is a detailed reference site covering the teeth of both extinct and living elasmobranchs, the group that includes sharks and rays. Fossil enthusiasts and paleontology hobbyists will find specialized information on elasmobranch dental morphology, with a focus on Neogene-era specimens from sites like Lee Creek.
https://eaae-astronomy.org/blog
The European Association for Astronomy Education (EAAE) maintains this blog to share the latest astronomical discoveries and news, covering topics like black holes, supernovae, and planetary science. It also promotes educational initiatives such as the annual 'Catch a Star' contest, which encourages young students across Europe to engage with astronomy research.
http://bcares.org/
The Benton County Amateur Radio Emergency Service (BCARES) connects licensed ham radio operators in Benton County, Oregon who volunteer to provide emergency communications support for the Sheriff's Office and other local agencies during disasters. The site covers the group's capabilities including packet radio, voice, Morse code, and amateur television, and also lists upcoming license classes and examinations for those looking to join.
http://tecsolv.com/cq
A curated collection of links to amateur radio homebrew construction projects on the web, maintained for operators who enjoy building their own equipment from scratch. Aimed at nostalgic ham radio builders who remember the Heathkit era, the site also offers to host new project pages for those without their own web presence.