Amateur Radio
682 sites
https://ik3qar.it/rtty/1
IK3QAR's technical page covers RTTY digital radio operation, focusing on FSK and AFSK interface circuits with detailed wiring diagrams for connecting a PC soundcard to a transceiver. The site addresses practical problems like ground loop interference and signal reentry, offering schematics and tips for rigs including the Kenwood TS940.
http://ham-radio.com/sbms
The San Bernardino Microwave Society (SBMS) is a non-profit technical club dedicated to amateur radio communications above 1 GHz, serving the Southern California region with monthly meetings, contests, and a rich archive of technical papers. Visitors can find member project presentations, contest results for 10 GHz and 2.3 GHz ARRL events, software tools, and newsletters covering cutting-edge microwave experimentation.
https://contestcalendar.com/
Run by Bruce Horn (WA7BNM), this comprehensive calendar tracks amateur radio contests worldwide, offering 8-day, 5-week, 12-month, and perpetual views alongside rules summaries, log submission deadlines, and historical data going back to 2005. Hams can customize the calendar to display only their preferred contests and even subscribe to a weekly email digest, making it an essential reference for the contesting community.
https://qsl.net/kc0dbu/post30.htm
Explorer Post 30 is a youth scouting group based in Springfield, Missouri with a focus on amateur radio and related activities. The site links to ARRL and QSL.net resources, features post event photos, and connects members with local and area clubs.
https://pi4cc.nl/
PI4CC Contest Club is a Dutch amateur radio club operating from a World War II bunker at Hoek van Holland since 1993, specializing in HF multi-operator contest entries. The site offers a detailed station tour, antenna specifications, contest stories, DX-trip logs, and member information for this technically impressive homebrew contest station.
https://www.qsl.net/ciarc
The Christians of Idaho Amateur Radio Club (CIARC) is a faith-based ham radio organization that monitors multiple simplex frequencies and aims to spread the Christian faith through amateur radio. Designed by Darin Roberts in 2006, this club site serves as a hub for members who combine their passion for radio communication with their religious mission.
https://www.qsl.net/cwra
The Central Wisconsin Repeater Association (CWRA) is a ham radio club based in the Madison/Baraboo area that owns and operates two 2-meter FM repeaters serving southern Wisconsin. Founded over 35 years ago, the site offers membership information, newsletters, board of directors details, and resources like FCC license renewal links, with a notable emphasis on public safety and storm watch coordination.
https://w9dup.org/
The official site of W9DUP, the DuPage Amateur Radio Club (DARC) based in Illinois, covering club news, membership, Field Day results, hamfests, ARES emergency preparedness, and local amateur radio events. Visitors can find an active club calendar, EchoLink and IRLP info, licensing education resources, and a showcase of the club's 7th-place national Field Day finish.
http://k6may.com/
The personal ham radio page of K6MAY, a licensed amateur radio operator whose callsign is registered on QRZ.com, featuring a live UTC clock display and imagery related to Collins radio equipment, railroads, biking, and modeling. The site blends the operator's ham radio identity with glimpses of other hobbies, making it a classic old-web shack page from the amateur radio community.
https://members.tripod.com/~Hamnut_2/index.htm
Larry Miller (KB5ITT) shares his adventures installing ham radio repeaters on mountain peaks in the San Juan Mountains of southwestern Colorado, blending technical radio work with exploration of ghost towns and scenic four-wheeling routes. The site covers two specific mountain-top repeater builds near Silverton, historical photography of old mining towns like Animas Forks, and off-road trail information for the region.