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

It is operated by Bas ON5HB and Marian ON3MS, e-mail ==> Bas and Marian <==
Beware when we are transmitting ourselves the reception can be disturbed.

Information about the WebSDR project and other servers can be found at ==> <==

NOTE 1 You need both Java and JavaScript enabled for this page to work properly.
If you don't hear anything, probably Java is disabled or the version is too old (i.e. pre-1.4.2).

NOTE 2 If you use a tablet or mobile phone, try this one: ==> Mobile version <==
We are also listed at PocketRxTX thanks to Dan YO3GGX: ==> PocketRxTx Screenshots on Android <==

NOTE 4 Antenna is normally Inverted-L (54m longwire) but can also be a MiniWhip or G5RV (2x17m), depends on the bands I'm using myself.

NOTE 5 Typical bands below 10MHz use LSB and bands above 10MHz USB, however, 60M uses USB as well as most professional users like coastguard and aircontrol.

NOTE 6 The very best radio-station of Belgium is JoeFM (dutch but continues music at night), direct stream: ==> JoeFM <==

07/04/2018 - Replaced old fan-less Celeron 847 back, installed RealTime Linux-Kernel, seems to have solved all problems.
26/05/2018 - All Dongles back behind upconverters, they got overloaded in the evening.
16/06/2018 - Added 20m band instead of Icom-IF output, let me know if it's sensitive enough.
21/06/2018 - We have been added to PocketRxTX!! Yes!!.
26/08/2018 - Some minor tweaks to improve sound quality and removed some html mistakes.
23/09/2018 - We have TeamSpeak as well and work with: TeamSpeak3 Server Link If the link doesn't work server: RDRSN.MOOO.COM:9978
Don't be shy, please let us know your name and call in the box below, thanks.

This chatbox is intended to discuss the operation of the WebSDR or chat between other users, please keep it nice.
The operators of this site disclaim any responsibility for text appearing in this chatbox. It stores a cookie on your system only for this website that holds your name and call.

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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


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

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

Bandwidth: ? kHz @ -6dB; ? kHz @ -60dB.

Or drag the passband edges on the frequency scale.
Waterfall view:
Or use scroll wheel and dragging on waterfall.

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