Amateur Radio
682 sites
http://big.or.jp/~jh4phw/index-e.html
The personal ham radio homepage of an operator holding multiple callsigns including JH4PHW, JA1CUF, WH0P, and 9V1PW, reflecting activity across Japan and other regions. The site offers links to amateur radio resources, a callbook lookup, and a Japanese ham radio web cluster.
https://sharc.net/
The South Hills Amateur Radio Club (SHARC) is a 501(c)(3) non-profit based in Pittsburgh, Pennsylvania, serving ham radio enthusiasts across the South Hills region with callsigns KS3R, N3WX, and W3PIT. The site offers detailed information on club repeaters, Field Day events, membership, VE testing schedules, and an extensive swap-and-shop classifieds section for amateur radio equipment.
http://hamradio.dk/
The official site of EDR København, the Copenhagen chapter of the Danish Amateur Radio Society, operating under the callsign OZ5EDR. A hub for Danish ham radio enthusiasts, covering club activities, news, and resources for the amateur radio community in Copenhagen.
http://bratsatv.org/
The Baltimore Radio Amateur Television Society (BRATS) is a non-profit amateur radio club based in Baltimore, Maryland, focused on ATV (amateur television) repeaters, emergency communications, and public service. The site features club news, meeting announcements, technical writeups on their ATV repeater revival project, and information on joining the organization.
http://bitxhacks.blogspot.com/2017/10/raduino-as-nbfm-tx.html
BITX Hacks is a technical blog by Ashhar Farhan focused on modifications and experiments with the BITX40 amateur radio transceiver boards and Raduino controller. This post walks through a clever 30-minute hack to turn the Si5351 clock generator into a narrow-band FM transmitter using a varactor diode and a simple audio amplifier circuit, complete with Arduino sketch code.
https://qsl.net/yo3kaa
The Romanian Amateur Radio Federation's web presence serves as a gateway to the official site for Romania's national amateur radio organization. Visitors are automatically redirected to the federation's main site, which represents the governing body for ham radio operators across Romania.
https://qsotoday.com/podcasts
QSO Today is a long-running weekly podcast hosted by Eric, featuring in-depth interviews with amateur radio operators covering topics from homebrew transmitters and vintage gear to SDR, contesting, and DXpeditions. With over 535 episodes archived and a searchable episode list, it's an invaluable audio resource for ham radio enthusiasts at every experience level.
https://w5ks.org/
The Lawton Fort Sill Amateur Radio Club (W5KS) is a nonprofit ham radio club based in Lawton, Oklahoma, serving the community since 1949 with a focus on disaster preparedness, STEM education, and operator training. Visitors can find meeting schedules, upcoming net frequencies, free Morse code training sessions, and license testing events hosted by this ARRL-recognized club.
https://www.qsl.net/smcara/club_members.html
The St. Mary's County Amateur Radio Association (SMCARA) has been supporting amateur radio operators in southern Maryland since 1956, and this page presents their full club membership roster with call signs, license classes, and ARRL/volunteer examiner status. With 62 members listed and resources for becoming a ham radio operator, the site offers a solid look at an active regional ham radio club.
https://qsl.net/aa3rl/ant2.html
Mike Banz (AA3RL) breaks down the technical question of dipole antenna height with detailed radiation pattern analysis, helping amateur radio operators choose the right height for DX work, local nets, or directional operation. The page features multiple elevation pattern plots comparing dipole performance at various heights, making it a practical reference for hams planning their antenna installations.