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This is a multiband WebSDR receiver on LF, HF and 6m Band, located in Strasbourg JN38un and using a Redpitaya receiver.
More information about the WebSDR project can be found on Many thanks to Peter for his nice tool.
It is operated by RadioClub F4KJI (sysop F6BZG) and hosted by BATIMA Electronic Company ( ).

Philippe and Stéphane assembling the antenna to the mast :            

Solar-Terrestrial Data Panels

A good idea from ZR6AIC and thanks to him.

Many thanks to :

-F8ZW (Jean-Paul) and F4HLF (Yannick) for hosting the websdr
-F4AVI (Fabrice) and F6IRS (Jean-Claude) for all material supplies
-F6KQV for his financial support (purchase of the Redpitaya)
-F4HTB (Olivier) for his extensive Linux knowledge.
-VE3NEA (Alex), author of nice ham radio software like Cw Skimmer, which we use to decode CW.
-N5EG (Tom) for his gnu radio hermes toolbox developpement.
-Philipe swl for the 6m converter and Bernard swl for computer parts.
-WSJTX Team.
-Alsa Linux Team (Clemens Ladisch).
- Redpitaya Team for his support.

Please, let register with your call sign or your name. It is more friendly than an IP adress ;-)

Enjoy and thank you for your visit !

waiting for connection...

CW Realtime Reverse Beacon

Waiting for connection...

This reverse beacon is powered by a licensed CwSkimmer (author : Alex VE3NEA).
If you want the previous spots, click here and the full size file will be uploaded.
Last spots are shown at F4KJI spots - Reverse Beacon Net

160m CW spots
waiting for connection...

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.

Waiting for connection...

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

If sound interruptions occur, a check in the "More playback buffering " box often improves the situation
Please, give us your impressions in the chatbox.
This WebSDR is currently being used by ? user(s) simultaneously:      compact view

? dB; peak ? dB;
mute squelch autonotch
More playback buffering

Signal strength plot:
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.



   CSS Valide !