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'

We now have a VHF/ UHF websdr at Hack Green, you can view it here :- http://hackgreensdr.org:8902

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 http://www.websdr.org

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

here

Notices:

27th August 2020 - After much deliberation, and requests from sellers, we have decided to hold a 'Hangar Sale' on Sunday 18th October 2020.

The event will fully comply with government guidelines, for more information please see the Hack Green secret bunker webpage https://hackgreen.co.uk/whats-on/hangar-sales



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 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.



Since Java version 7u51, Java needs to be enabled separately for each website; see 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 http://websdr.org/java.html 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.

View: 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.

Memories: kHz

Bandwidth:

? kHz @ -6dB; ? kHz @ -60dB.

Or drag the passband edges on the frequency scale. kHz @ -6dB;kHz @ -60dB.

Waterfall view:

Or use scroll wheel and dragging on waterfall. Speed: slow medium fast

Size: small medium large

View: spectrum waterfall weak sigs strong sigs







? dB; peak ? dB;

mute squelch Notch1

Notch2 High Boost

DSP Noise Reduction: Off Low Medium High Strong

Volume: Audio recording: start

Your browser does not seem to support downloading the recording; please try a recent version of Firefox, Chrome or Opera. Signal strength plot: none fast slow dB; peakdB;mutesquelchNotch1Notch2High BoostDSP Noise Reduction:

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



Chatbox:



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