This HF WebSdr is located at the Nantwich Secret Nuclear Bunker, formerly R.A.F. Hack Green, now a working museum.

Location: ( 53° 1' 53'' N / -2° 31' 4'' W) QRA= IO83RA. / NGR SJ64590-47875

Operated by the Stoke-on-Trent ARS, SysOps are Joe ZL1PMY, Tony G1HMO and Martin G7CKX

Any queries regarding this websdr please contact 'hackgreensdr at'

We also have a VHF/ UHF websdr at Hack Green, you can view it here :-

For mobile devices, you can access the mobile version of this websdr here


18/6/2024 - The fault on the antenna system is now fixed, the RF relay that shorts out the RF path from the antenna had stuck closed.

Thanks to everyone that has kindly donated, and to the very kind SDRUtah folks, our new webSDR now uses 6 x SDRplay RSP1A receivers and a fast Dell R630 server.

If you would like to donate to help pay the electricity bill and allow us to further improve the websdr please do so below.


Most recent browsers support HTML5 audio, if you don't hear anything, check the security permissions in your browser and make sure that they are set to 'ALLOW' autoplay of sound, and not set to 'DEFAULT' which does not autoplay.
You will also need to have JavaScript enabled for the websdr to work properly.

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.

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

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.

? dB; peak ? dB;
mute squelch Notch1
Notch2 High Boost
DSP Noise Reduction:
Signal strength plot:
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).

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


As with the HF websdr, the chatbox has been removed due to inappropriate posts by certain individuals.