Ofcom Short Calls
Ofcom stops issuing short Full Calls
Since the middle of 2018 those passing the RSGB exam for the Full licence have been able to apply for short call signs such as M5xx, this has provided a major incentive to upgrade to Full
Ofcom have now reversed their call sign policy, an announcement on their web site says:
An applicant for a new Full Licence (or a Full (Club) Licence) may request a call sign with three trailing letters, using any valid Full Licence prefix in the list, above, except ‘G2’. Call signs using formerly issued prefixes are not available via the licensing portal and must be requested on a paper application form (a fee is payable).
A callsign with only two trailing letters or which starts with ‘G2’ is only available if the applicant previously held it. Our policy that a station may change its call sign only in exceptional circumstances remains unchanged though Ofcom may, on occasion, require a station to change its call sign.
The change in policy affects the issue of old amateur call signs that had been issued prior to the start of World War 2 but it is unclear why M5xx calls are also affected. Up until mid-2018 this call block had never been issued before.
The new policy does not affect any call signs that have already been issued.
You can see the Ofcom statement by expanding the “Amateur radio callsign allocation” section at
Although the “Amateur radio callsign allocation” section gives a date last updated of 15 October 2018 it appears Ofcom simply forgot to change the Section Date when they changed the words. The Page Date suggest the change took place on 25 February 2020.