|Name||Czech Lady "Control"|
|Known counterpart stations|
S17c was run by Czech Military Intelligence (Czech: Vojenské zpravodajství). Last heard on June 19th, 2007.
|555||313||05||313||42||05||Pozor, Pozor||52027||Pozor, Pozor||42||05||Konec, Konec|
|3-figure arbitrary ID||Single 5-figure group, middle digit always "0"|
|Repeated thrice||Repeated thrice||Repeated thrice||Repeated twice||Repeated twice||Repeated 10 times||Repeated twice||Repeated twice|
The general format was the same as S10d, but the recipient ID, the 2-figure number in the preamble and the amount of groups were constants.
S17c was sent out daily at 12:50 UTC, and each transmission lasted about 7 minutes. Up until February 1st, 2007, it was transmitted on two frequencies simultaneously, and only one frequency afterwards. Until February 2nd, 2007, the arbitrary ID was only 555 - then until the station's demise random triplets were used, but not 555 anymore.