Enigma ID S11a
Name Cherta
Status Active
Voice Female
Emission mode USB
Location 52°25'46"N 20°52'53"E (Warsaw, Poland)

Polish (icon)

Activity pages

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

Null format:

3 minutes and 10 seconds
371 Cherta 00 Konets
3-digit ID "/"    

Traffic format:

3 minutes and 10 seconds
420 Cherta 38 Vnimanie 49468 49468 ... 08682 08682 Vnimanie 49468 51422 ... 53682 08682 Konets
3-digit ID "/" Group count   5-digit paired groups,
with pauses every 10 pairs
  5-digit single groups,
with pauses every 10 groups

All S11a schedules are twice weekly, follow year-round UTC (no daylight saving), 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, in a system shared with the sister mode E11.

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.

Further information about the broadcast location. (Blog in Polish)