(slow) 19.5Bd/97Hz FSK, likely a Russian-Mil network

19.5Bd/97Hz (slow) FSK waveform spotted on 5331.0 KHz followed by opchat in Morse:
"RGJV de PZSF QSY 17542 K"

Source is probably some Russian-Mil network. Transmission consists of a repeated 126-bit sequence (Figs. 1,2).

Fig. 1

Fig. 2

 Interesting: a time shift of half bit is added after each sequence most likely for synch purposes (Fig. 3)

Fig. 3

A similar signal, except the 125 Hz shift, was also noted by my friend Cryptomaster:

http://www.radioscanner.ru/forum/topic36750-118.html#msg1017660

https://yadi.sk/d/z-4ImVGLytR0rQ