This is a WebSDR receiver, located in Heppen - Belgium - JO21oc - 70m ASL.

Operated by Bas ON5HB and Marian ON3MS, e-mail ==> Bas and Marian <==, easylink is: ==> <==

!! Beware when we are transmitting ourselves reception will be disturbed !!

Please support this project with a small donation so we can buy better receivers, they are very expensive:


23/09/2018 - We have TeamSpeak as well and work with: TeamSpeak3 Server Link If the link doesn't work server:
22/07/2022 - As of today the Heppen WebSDR uses GUI code of the Maasbree WebSDR.
Don't be shy, please set your name or call in the box below, thanks.

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Allow keyboard:
j k ← →: freq down/up (+shift or +ctrl/alt)
b B: band up/down
u l c a f: USB, LSB, CW, AM, FM
z Z: center/zoom waterfall
g: enter frequency
m: toggle mute
s: toggle squelch
n: toggle notch

 AM:  160m:  80m:  40m:
 20m:  10m:  2m:  70cm:


? dBm   peak: ? dBm


  === WebSDR Heppen ===


More info about Noise Reduction & High Boost here

Signal strength plot:


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

Or use scroll wheel and dragging on waterfall.


  ?  kHz@-6dB   Pitch: ? ?  Hz
Or drag the passband edges on the frequency scale.
     ?  Hz   Ref. Tone
     ?  Hz

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