This is an experimental WebSDR receiver, located in South-Eastern Poland. QTH: KN09IO

It is operated by Piotr, e-mail websdrns at

More information about the WebSDR project can be found on

Note: 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: Every day at 15:00 CET the internet connection is restarted.
Uwaga: Codziennie o godz. 15:00 następuje restart połączenia internetowego.

Note: Antennas are installed very low, there are many buildings nearby. The antennas instalation place will change soon.

It seems you are using a mobile device; click here to switch to the mobile version of this site.
It seems Java is not installed or disabled on your computer. You need to install and/or enable it for this website to work properly.
Since Java version 7u51, Java needs to be enabled separately for each website; see for instructions.
Your browser does not seem to support HTML5 WebAudio; please try a recent version of Firefox, Chrome, Opera or Safari; or switch to Java.
This WebSDR is currently being used by ? user(s) simultaneously:      compact view
Allow keyboard:
j k ← →freq. down/up (+shift/ctrl/alt faster)
u l c a fUSB, LSB, CW, AM, FM
W wfilter wider/narrower
z Z ^Zcenter/zoom waterfall
genter frequency
b Bchange band
m V vmute, volume up/down
t TVFOs: toggle A/B, set A=B

Frequency & VFO:
Fine tune:
0.005kHz 0.01kHz 0.05kHz 0.1kHz 1kHz 10kHz
Or tune by clicking/dragging/scrollwheel on the frequency scale.

Waterfall: Full window width "sticky"
View: Size: Speed:
Or use scroll wheel and dragging on waterfall.


Bandwidth presets:
? kHz @ 0dB; ? kHz @ -6dB; ? kHz @ -60dB.

PassBand Tuning (PBT) Control:
Or drag the passband edges on the frequency scale

signal ? dBm; peak ? dBm;

Mute Squelch Autonotch Noise reduction

Noise reduction level: automatic manual

Gain control: automatic manual
Hang time:

Signal strength plot:
Station information:
Lookup in databases  
Call of station that you hear: Comments, if any:
Note: time, frequency, your name/call, and DXCC information are added automatically.
View the last 20 lines of the logbook, or the entire logbook (ctrl-click for new tab/window).
Voice/SSTV: 145.800 MHz / Packet: 145.825 MHz
Telemetry: 145.870 MHz
Telemetry: 145.935 MHz / Transponder: 145.960 MHz

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.

  Please calculate =


By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.