Amateur Radio
682 sites
http://monitoringtimes.com/html/mttopHF.html
Monitoring Times presents a curated list of over 1000 active HF frequencies compiled by Larry Van Horn (N5FPW), covering military, marine, government, and civil air patrol communications worldwide. A valuable reference for shortwave listeners and scanner enthusiasts, the list spans frequencies from 2 MHz to nearly 30 MHz with detailed mode and geographic information.
https://g7kse.co.uk/
G7KSE is a UK amateur radio operator's personal site packed with projects, documentation, and blog posts covering SOTA activations, HF through 13cm, QRP operating, APRS, LoRa, Meshtastic, and homebrew antenna builds. The site also includes coding projects like HamDash and HamTool, Raspberry Pi tinkering, and CW decoding resources, making it a genuinely useful reference for fellow radio enthusiasts.
http://momnpopsware.com/
Mom 'N' Pop's Software is a small family-run vendor based in Spring Hill, Florida, established in 1989, selling CD-ROM and DVD software with a heavy focus on Ham Radio titles alongside education, games, and utilities. Their free downloadable catalog includes a special Ham Radio edition featuring over 1000 shareware and freeware programs, making it a notable resource for amateur radio enthusiasts on a budget.
https://w3eax.umd.edu/
W3EAX is the Amateur Radio Association at the University of Maryland, a student club with roots going back to 1933 and an ARRL-affiliated callsign. Their well-equipped shack includes HF, UHF/VHF, Amateur Television, and satellite gear, plus a full electronics workbench for hands-on radio experience.
http://www.baltimoremd.com/qrpwebring
Created by Thom LaCosta (K3HRN), this is the hub page for the QRP Amateur Radio Web Ring, connecting low-power ham radio enthusiast sites across the web. Visitors can join the ring, edit their site entry, retrieve replacement HTML fragments, and browse the full ring layout.
https://amateur-radio.net/rptr
Operated by K1IW, this searchable database lets ham radio operators and enthusiasts look up amateur repeaters and broadcast transmitters across all 50 U.S. states, Washington D.C., and Canadian provinces. Users can filter results by band, digital mode (DMR, D-STAR, YSF), distance from a location, and more, with data sourced from official FCC and NFCC coordination records.
https://www.qsl.net/dl5dbm/HAM/hbrew.htm
DL5DBM's homebrew page is a technical treasure trove for amateur radio operators, featuring detailed documentation for self-built projects including a 1 KW 2-meter power amplifier, antenna preamps, transverters, baluns, and regulated power supplies. Projects span VHF, UHF, and 6-meter bands with downloadable schematics and guides in both English and German, making it a practical resource for hams who build their own equipment.
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/ecara
ECARA appears to be an amateur radio club or organization hosted on QSL.net, the well-known hosting platform dedicated to ham radio operators and groups. The directory index suggests a collection of club files and resources, likely including meeting info, member details, or radio-related documents.
http://n3sh.org/
The Wireless Association of South Hills (WASH) is an amateur radio club based in the South Hills area, offering a rich calendar of activities including Field Day, PA QSO Party, VHF/UHF repeater nets, ARRL licensing exams, and ARES/RACES emergency communications support. The site serves as a hub for both seasoned hams and newcomers curious about getting licensed, with how-to guides, a club newsletter called the WASHRag, and information on public service events like Skywarn spotting.