14 August 2019

CIS-75 FSK 75Bd/250

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

13 August 2019

Defence Australia 188-110 Serial transmissions

The Australian 188-110A Serial running on 14385.0 KHz/USB (600bps KW-46/KIV-7M secured broadcast) and 10407.0 KHz/USB (2400bps 1536-bit TDM protocol), already discussed here, are most likely originated from Defence Australia Tx sites which are located in North West Cape (Exmouth) and Townsville (Bohle River).