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.

More information about the WebSDR project can be found on

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 its version is too old (i.e., pre-1.4.2).

NOTE 2 If you have an Android- or Apple-powered tablet or mobile phone, try this one: ==> Mobile version <==

NOTE 3 The dongles can be overloaded by big signals, attenuator (-10dB) is installed to stop this from happening.
Signals can vary due to the antenna-tuner and used antenna as the dongles are connected to my TS-590 for RX-signals, they use the same antenna's as my tranceiver.
Antenna is normally G5RV but can be Inverted-L, depends on the bands I'm using myself. When I'm transmitting the RX/TX relay in the TS-590 will disconnect the dongles.

NOTE 4 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 5 The very best radio-station of Belgium is JoeFM (dutch but continues music at night), direct stream: ==> JoeFM <==

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.

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

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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.