CIS-75-75/250 is a Russian/CIS system supposed in use by Military in HF. As its name, this system use F1B modulation with 250 Hz shift and 75 bps speed, most likely a broadcast with linear encryption (ACF=0). The transmission was heard today on 9188 KHz (cf), operating continuously from the first morning. It's worth noting that during the days back, while I was monitoring the Swiss-MIL on 9187 KHz/USB, this FSK signal was not present: maybe 9188 KHz is not a primary channel, but it's a my guess.
According to several TDoA localizations, the site of Tx is in the area of Moscow.
kiwi-kuo.aprs.fi_2019-08-14T13_08_37Z_9188.00_iq.wav
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