A mysterious trumpet-like sound on 7285 VOV 1107, was audible today . There is surely a faulty transmitter, as shown in the waterfall, with a wide span of around 40 kHz max and a carrier signal of -65. The transmitter is also equipped with a near carrier buzzer base and a string fence, similar to the S Arabian transmitter used in the Yemenite program, but with strings spaced 720 Hz apart. The carrier vanished at 1129, yet the strings persist within the band. A few pictures are associated below
Listen:https://app.box.com/s/drfau6hzuaglj8362dn1z34i3f5omq2f
(1) as show with the picture below the signal is spanned quite wide in the fast waterfall tracing this is around 2 minutes of waterfall: suposedly higher modulations transcend into higher signal expansion as with Radio Cairo
(2) More narrower visual span to show the nature of the multi string signal thnat expands into a high range in this part of the band : as measured once the strings are 720 HZ apart with 4 bing the main
Another medium zoomed picture ON 7260 radio operations are using AM mode for their communication
And finally a picture of higher close up showing someof the above strings with linear lines as like a ....Russian CIS channel in idle mode!
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