Author: Alan, 5B4AHJ

The 1947 ITU International Telecommunication Convention held in Atlantic City, USA  took place from 15 May to 02 October. The published Radio Regulations from this convention lists MAA-MZZ as allocated to Great Britain.The effective compliance date for ITU allocations from the 1947 convention was 1949-01-01. Nevertheless, some British-issued callsigns in this series were in use from early 1947. The MD prefix was used by British military personnel from North and North-East Africa and the Middle East in this period. In some locations a separate civilian prefix was used. Allocations were as follows:

Military Prefix Civilian Prefix QTH
MD1 * MC1 * Cyrenacia, Libya
MD2 * MT2 * Tripolitania, Libya. Also used by American personnel.

MD3 *

MI3 *, MI6 Eritrea. MI6 was used by ex I6 calls

MD4 *

MS4* Somalia (Italian Somaliland)

MD5 *, ME5

Suez Canal Zone, Egypt. It seems ME5 was a military prefix, not civilian.

MD6 *

- Iraq. MI6 was used by ex I6 calls in Eritrea

MD7 *

- Cyprus. MC7 not necessary as ZC4 was the Cyprus prefix


- Not known, information required. May not have been used.


- Yemen Arab Republic

The second letter of the civilian prefix is the first letter of the territory, with the exception of MI3, MI6.
* indicates that the data is from the NCDXC reference below.

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