priyom.org

M01b

Enigma ID M01b
Name
Frequencies
Status Active
Voice N/A
Emission mode USB + carrier
Location Russia
Activity pages

Transmission format:

Preamble Message Outro
815 631 45 BT BT 19836 19836 66417 66417 ... 83788 83788 BT BT 631 45 000
3-figure ID 3-figure group, purpose unknown Amount of 5-figure groups in the message   5-figure paired groups   3-figure group, purpose unknown Amount of 5-figure groups in the message  
Repeated for 4 minutes Repeated twice Repeated twice       Repeated twice Repeated twice  

Operation habits

M01b uses the same format as M01, however it differs in scheduling habits. The message sent on each schedule remains the same for 4 weeks, then it is changed, and the cycle repeats.

Unlike M01, M01b uses both the two-tone CW modulation, and also an additional carrier. M01b has a consistent speed of 10 WPM, and uses a computer running Windows, with the numbers typed in manually by an operator. Zero is sent as "T" - a single dash.

Leaked Windows system sounds indicate that Windows XP was used as of 2014, while later either Windows Vista or 7 was used as of 2019.

M01b with Windows XP shutdown sound (at 14:05)

M01b ending with Windows Vista/7 shutdown sound (at 1:29)

M01b transmission times are adjusted along with DST in the CET timezone.