priyom.org

E11b

Enigma ID E11b
Name Oblique
Frequencies
Status Inactive
Voice Female, with Polish accent
Emission mode USB
Location Warsaw, Poland
Activity pages

E11b refers to E11 messages sent in years 2003-2009, with group counts in the 30's, which began and ended with "77777 77777." Such messages were sent on a randomly chosen week once a month. These groups were dropped in March 2009, but the once a month message procedure was retained.

This format first began in Morse code as M03c in August 2000, and later, in August 2006, S11a was also given its own variant, S11b.