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M08a

Enigma ID M08a
Name
Frequencies 7555, 8010, 8097, 8136
Status Inactive
Voice N/A
Emission mode LSB; 1000 Hz audio tone
Location Havana, Cuba

Flag_Cuba

Activity pages

M08a was the Morse code flavor of the Cuban DGI. Superseded by HM01.

Transmission format:

Intro Message #1 Message #2 Message #3 Outro
DIRTA AGIGN NTTNN DIRTA = = = NRWAW UGDTU UNTUI ... AR AR AR AGIGN = = = DUURW RUTUW DUUTU ... AR AR AR NTTNN = = = TWTGR TRARG RUDUW ... AR AR AR SK
Three 5-digit message headers First header   150 5-digit single groups,
pause every 10 groups
  Second header   150 5-digit single groups,
pause every 10 groups
  Third header   150 5-digit single groups,
pause every 10 groups
   
Repeated for 3 minutes Repeated 5 times       Repeated 5 times       Repeated 5 times        

M08a used the following cut number scheme:

0 1 2 3 4 5 6 7 8 9
T A N D U W R I G M

In the headers, the actual header comprised the first 4 digits, while the last digit was either 1 or 2.

M08a replaced the previous format M08 in 1997. After November 2012, when HM01 was introduced, M08a was relegated to only three time slots - 14:00, 20:00, and 23:00 UTC. The 20:00 UTC slot sometimes carried V02a instead, on either Tuesday or Thursday at the beginning of the month. The latest confirmed full transmission of M08a took place in February 2019.