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 now have a VHF/ UHF websdr at Hack Green, you can view it here :-
For more information about the SDR receivers in use at Hack Green, please see the SDR receiver description , or for more information on the Websdr project, visit

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


Hack Green hangar sales:- Sunday 18th March 2018 and Sunday 7th October 2018 doors open 10:00am, tea coffee and snacks available.
Traders and enquiries contact Lucy on 01270623353 or

There is an issue at the moment with dropped network packets on the websdr stream resulting in broken audio every 30 seconds or so, this is being investigated by our ISP.

If you are having problems after updating Java to version 8.0.45 then follow these instructions :- Java 8.0.45 problem

Note: Unless your browser supports HTML5 audio, you will need both Java and JavaScript enabled for thispage 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) or your browser does not support HTML5.
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
m V v: Mute, Volume Up, Volume Down
z Z: center/zoom waterfall
g: enter frequency

Frequency: kHz

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

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

I.F. PassBand:

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

? dB; peak ? dB;
mute squelch autonotch
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


The chat box has been removed because certain people just could not resist posting abuse and abusing other users.