Enigma ID S11b

Name Cherta
Frequencies Various
Status Inactive
Voice Female, automated, with Polish accent
Emission mode USB
Location Poland
Activity pages

Download audio sample

Known counterpart stations E11b, M03c, POL FSK

S11b refers to S11a messages which began and ended with "77777 77777", which were included in the amount of groups given in the intro. Active in years 2006 - 2009.

S11a schedules, i.e. those that send null messages, sent a 30 to 39 groups long E11b message one week of a month, each schedule on a different one. Since March 2009 the same procedure of sending messages is being followed, but "77777" groups are gone - however similar groups are still present in S11a's digital counterpart, POL FSK.

This format first began in Morse code as M03c in August 2000, joined by English counterpart E11b in August 2003.

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