|Frequencies||3370 (DFC37), 4010 (DFD21)|
|Voice||Female, automated, the last digit in the groups was inflected (the same as G15 and G16)|
|Emission mode||AM, USB|
|Known counterpart stations|
G14 was operated by (West) German Federal Intelligence Service (BND), ceased in early 1990s, operated since late 1950s. The callsigns DFC37 and DFD21, and their frequencies of 3370 and 4010 kHz were both ITU-allocated, making them one of very few legitimately operating number stations.
The designator G14 refers to the post-1988 format of the transmissions, which involved an automated voice; refer to the G14a for the old variant.
|"Delta Foxtrot Delta Zwo Eins" or "Delta Foxtrot Charlie Drei Sieben"||Random electronic melody||Es folgen Mitteilungen für||278||278||24 gruppen||Achtung||278||278||24 gruppen||624-78 624-78 038-18 038-18 ...||Ende|
||"Messages are following for"||3-figure recipient ID||Amount of 5-figure groups in the message||3-figure recipient ID||Amount of 5-figure groups in the message||5-figure paired groups, with a break after the third digit.|
|Repeated for 5 minutes||Repeated as necessary with different data for multiple messages||For each message|
DFC37 and DFD21 were transmitted every day from 15:00 until 22:00 UTC. The messages were first transmitted at the top of the hour in AM mode, and then repeated at half hour in USB mode. DFC37 and DFD21 used their own recipient ID's, not shared with any other BND station.
The voice used standard German military radio pronuncation of "2", "5" and "9", being rendered as "zwo", "fünnef" and "neuen", respectively.
The following were the recipient ID's used by DFC37 and DFD21. They were shared by both the stations.
Details on encryption and decryption of the messages can be found in this declassified Polish counter-intelligence document.
[ID's were taken from Simon Mason's 1991 book Secret Signals]