Enigma ID S11a

Spectrum image e11a_spectr

Name Cherta
Status Active
Voice Female
Emission mode USB
Location Warsaw, Poland
Activity pages

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Known counterpart stations E11, G11, S11, M03, F03, F11, P03

S11a is the Russian language flavor of the Polish 11 operator.

Null format:

371 Черта
00 Конец
3-digit ID "/" Group count  
Repeated for 3 minutes 10 seconds  

Traffic format:

Intro Message Outro
420 Черта
38 Внимание
49468 49468 ... 08682 08682 Внимание
49468 51422 ... 53682 08682 Конец
3-digit ID "/" Group count   5-digit paired groups,
pause every 10 pairs
  5-digit single groups,
pause every 10 groups
Repeated for 3 minutes 10 seconds          

All S11a schedules are twice weekly, follow year-round UTC (no DST adjustments), and use one of three different frequencies depending on the month - one from November to February, another from May to August, and yet another for the remaining months. The first two digits of the ID identify a particular schedule.

On each schedule, only null messages are broadcast for the majority of the time. However, traffic is sent at least once every month, on a seemingly random week. The standard group count range is 30 to 40 groups inclusive. Sometimes, extra messages may be delivered within a month that may exceed this range.