The Museum’s Amateur Radio Station Callsign GB100RSM

June 2020 was the centenary of the formation of The Royal Corps of Signals.  As part of the commemorative celebrations the  Royal Signals Museum was allocated the callsign GB100RSM. This was initially a temporary allocation but the callsign has now been reissued as a Permanent Special Event Station to be used throughout 2021.


Individual Contacts


Since 1st June 2020 to date 1532 individual contacts with 48 countries and 9441 “hits” on the GB100RSM page on site majority using Morse Code but also a good proportion using voice as well

The latest project is a dedicated trailer to house the Amateur radio station so it can be taken to events and outreach activitie. It will also be available on loan to other Amateur Radio Clubs.


The Amateur Radio callsign GB100RSM was first used by the Museum’s outreach team in November 2018 and commemorated the 100th anniversary of the end of World War 1. Subsequently in January 2020 – as part of the 100th anniversary celebrations of The Corps, The Museum reapplied to Ofcom to use the callsign on a permanent basis – thus keeping the museum ‘on the air’.

The Covid pandemic lockdown precluded the station operating from the museum premises but Ofcom relaxed the regulations governing the operation of Special Event Stations so the callsign has been used at the amateur radio station of museum volunteer Geoff Budden located in Bournemouth .

Contacts are mainly using CW ( Morse Code ) with occasional use of SSB ( voice ) when radio conditions permit.

Most memorable contacts have been made using morse code with stations in Belgium and Holland using replica WW2 ‘Parasets’- (issued by the SOE to their radio operators working for the Resistance).

Geoff Budden – callsign G3WZP – was first licensed in 1967 after passing the City & Guilds Radio Amateur Exam and a morse test by the GPO Southampton Marine Radio Officer examiner. First contacts used an ex WW2 19 Set (made in Canada with Russian Control markings) followed by Ex RAF R1155 receiver and a RCA AR88 receiver of the type used by the WW2 ‘Y’ service .

Geoff Budden