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 gmx.com'

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

Notices:

7/12/2025 - The 'timeout' on the Websdr has NOT CHANGED, it is the same as it always has been, however, the packet loss on the microwave link will cause the websdr stream to drop and you have to restart the browser to reconnect the stream, to the user appears as the websdr has timed out. The cause of the packet loss is still being investigated.

17/10/2024 - The firewall at the websdr site had failed, I replaced it on 17/10, so hopefully everything should now be ok again.

30/07/2024 - There is an issue with the microwave link feeding Hack Green, every 5 minutes packet loss is occuring, the cause is currently being investigated.

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.

Note:

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.

? dB; peak ? dB;
mute squelch Notch1
Notch2 High Boost
DSP Noise Reduction: Off Low Medium High Strong
Volume:

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Audio recording: start

Your browser does not seem to support downloading the recording; please try a recent version of Firefox, Chrome or Opera.

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Signal strength plot: none fast slow