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

M01b was a Russian number station. Last heard on May 29, 2020.

Transmission format:

4 minutes
815 631 631 45 45 = = 19836 19836 ... 83788 83788 = = 631 45 000
3-digit ID 3-digit group
Group count
  5-digit paired groups   3-digit group
Group count

Zero was sent as "T" - a single dash.


All M01b schedules transmitted the same message, with each schedule using a different 3-digit ID. The messages were always between 30 and 50 groups long, and replaced monthly on the 1st of the month.

M01b was keyed semi-automatically by an operator using a computer running Microsoft Windows. Windows XP was used as of 2014, later upgraded to Windows 7 by 2019, as indicated by leaked sound effects:

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

M01b with the Windows 7 shutdown sound (at 1:29)