Posty: 92 #8345408
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Ciekawe informacje są na różnych forach np. tutaj :
https://groups.io/g/vk1-reflect/topic/areg_members_7063_and/113923663?page=2
".. Russian Navy Black See Fleet (BSF) at Sevastopol; Extremely powerful two channel 20b/7000 Hz FSK paired signals re-appear from Apr 23rd on 40m band ~ 7045cf and 7065.5cf, each channel seems to be 7 kHz from mark and space, chosen for it's immunity from being easily jammed, at times the pair will shift frequency; originating from Western RU region, now Crimea with transmitters near Sevastopol. The modulation rate of 20b with a shift of 7000 Hz. -The signal frame is 17 bits, the first of which is a 0. -The superframe is 15 frames (255 bits) and is constantly repeated so it does not appear to carry any useful information .." |
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