GB7KH, Kelvedon Hatch Multi-Mode Digital Voice repeater, is located at the Kelvedon Hatch Secret Nuclear Bunker, approximately 30 kilometres north-east from central London, where we also run the special event station GB0SNB.

The repeater was licensed early February 2015 and went live on the 6 April 2015 as an Icom G2 box. The repeater was later upgraded (September 2016) to an MMDVM based multi-mode repeater.

Please feel free to have a look around the site using the menu buttons above, or along the right hand side. Contact the keeper (George M1GEO) using the Contact Me page. You may also donate to the repeater’s upkeep using the Make a Donation page.  The Acknowledgements page recognises all those who have helped get GB7KH where it is today.


(21 Sept 2016) On the lookout for Motorola PMRs? The repeater needs two of the same model, ideally. Looking for any of the following: GM300, GM340, GM360, GM380, GM900.

(20 Sept 2016) After a few days of initial use, we have identified some small problems with the new repeater. These were to be expected, since running a repeater on a bench is different to having it on site. Work is scheduled to inspect and (hopefully) fix these. It’s a learning curve.

(18 Sept 2016) GB7KH is upgraded to an MMDVM based multi-mode repeater. Info on the changes is available here.

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