priyom.org

M45

Enigma ID M45

Name
Frequencies 3525, 4025, 4555, 4955, 5074, 5474
Status Inactive
Voice N/A
Emission mode MCW (H2A)
Location Russia
Activity pages

Known counterpart stations S21

M45 is believed to have been a training station. The same format as M01 was used, but semi-automatically sent at the speed of about 12 words per minute. Last heard in October 2013.

Format:

Preamble Message Outro
525 698 30 BT BT 24669 24669 63550 63550 ... 41186 41186 BT BT 698 30 0 0 0
3-figure ID 3-figure one-time pad number? Amount of 5-figure groups in the message   5-figure paired groups   3-figure one-time pad number? Amount of 5-figure groups in the message  
Repeated for 4 minutes Repeated twice Repeated twice       Repeated twice Repeated twice  

M45 was always transmitted 40 minutes before its voice counterpart S21, and sent the same message that S21 would later retransmit in voice, though sometimes M45 was transmitted on S21's schedules by mistake.

M45 used to operate on the following schedule. The transmission ID was taken from the last three digits of the lower simultaneous frequency, so for example a transmission made in January would have had the ID "525". The higher simultaneous frequency was either 400 or 500 kHz above the lower one.

Day UTC Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Tuesday
Thursday
17:02       4555
4955
5074
5474
5074
5474
5074
5474
5074
5474
4555
4955
4555
4955
   
18:02 3525
4025
3525
4025
4555
4955
              3525
4025
3525
4025
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