A WebSDR is a Software-Defined Radio receiver connected to the internet, allowing many listeners to listen and tune it simultaneously. SDR technology makes it possible that all listeners tune independently, and thus listen to different signals; this is in contrast to the many classical receivers that are already available via the internet.
More background information is available here. Questions and comments can be sent to PA3FWM, the author of the WebSDR software and maintainer of this site; but please check the frequently asked questions first.
WebSDR servers can register themselves automatically on this site, leading to the below list of currently active WebSDR servers.
Currently there are 89 servers active, with 483 users and 173546 kHz of radio spectrum.
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Antenna
Dual-band V-UHF Quad Antennas
Why choose the 6BS-270 antenna versus a traditional Yagui? · Elements of full wavelength, reaching maximum efficiency in TX / RX. · Optimized design.... Read more
Chameleon Emcomm IIIP Antenna – Antenna, Portable, 160M-10M
CHAMELEON ANTENNA EMCOMM-III Portable HF Antenna is specially designed for short to long range portable and man-pack HF communications. The EMCOMM III... Read more
Camouflaged Ham Radio Antenna
Model Frequency (MHz) Gain (dBi) Length Feedline VT-14 144-148 2.6 36 in. 3 ft. RG-58 VT-22 222-225 2.6 25 in. 3 ft. RG-58 VT-44 440-450 2.6 16... Read more
VK5SFA Wins the April QST Cover Plaque Award
The winning article for the April 2019 QST Cover Plaque award is “A High-Power 160- and 80-Meter Transmitting Loop Antenna” by Steve Adler, VK5SFA. Th... Read more
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