This VHF / UHF 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'

Why not check out our HF websdr at Hack Green, you can view it here :- http://hackgreensdr.org:8901
For more information on the Websdr project, visit http://www.websdr.org

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

Notices:

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 that feeds Hack Green, every 5 minutes there is a period of packet loss, the cause is being investigated.

31/03/2020 Thanks to the very kind folks at the Northern Utah Websdr, I have implemented DSP noise reduction and a second notch filter, also on FM there is now de-emphasis on the audio and sub-audible tone filtering.

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

Full details here Websdr DSP Features

The latest Firefox update (August 2022) has stopped audio from automatically playing on the Websdr, you now have to specifically ALLOW it to play. I do not use Firefox, but it looks like you need to load the Websdr page, then depending on the Firefox version, go to settings, privacy, permissions, autoplay and enable sound.

The latest update to Chrome has once again broken the Websdr, see this document for workarounds.

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 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) or your browser does not support HTML5.

? 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