This is a test WebSDR receiver, located in

Technical School Rudjer Boskovic (TSRB)
Getaldiceva 4
Zagreb, Croatia
(temporary located in 9a7aof home)

Server is working on Orange Pi PC+ with RTL-SDR stick and homemade up converter
(automatic change between 80 and 40 meters amateur bands at 0600z and 1655z ).

We have radio club section, callsign 9A1RBZ.
System is operated by Darko, 9a7aof.

More information about the WebSDR project can be found on

Useful Links:
DR2W | DX Propagation
Voacap Prediction
VOACAP Online Coverage Maps
Short Wave Frequency Shedule
Magnetic storms online

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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.
Bandwidth and and I.F. Passband filter:
? 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
Volume: 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.


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