This is a WebSDR receiver, located in Sofia, Bulgaria It is operated by LZ7AA аt It is based on Redpitaya hardware and covers the 6 major bands with 180kHz bandwidth.
It is equipped with Active Antenna (2 crossed closed loops) by LZ1AQ.
Fix for latest Chrome Audio problems. Open new tab and type "chrome://settings/content/sound", then add this site to the allowed list". Alternatively, click on the green button "Chrome audio start"
Special thanks to LZ1NIZ and LZ1LSD for the logistics around the server power supply replacement and thank you LZ3LZ, LZ5DD, LZ5EE, LZ5RG and LZ7EA for your support!
Enjoy the radio, 73 de LZ7AA bk
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Allow keyboard:
j k ← →: freq down/up (+shift/ctrl/alt faster)
u l c a f: USB, LSB, CW, AM, FM
z Z: center/zoom waterfall
g: enter frequency

Frequency: kHz

Or tune by clicking/dragging/scrollwheel on the frequency scale.

? kHz @ -6dB; ? kHz @ -60dB.
Or drag the passband edges on the frequency scale.
Waterfall view:
Or use scroll wheel and dragging on waterfall.

? dB; peak ? dB;
mute squelch autonotch
Signal strength plot:

This WebSDR is currently being used by ? user(s) simultaneously:      compact view

This chatbox is intended to discuss the operation of the WebSDR.
The operators of this site disclaim any responsibility for text appearing in this chatbox.