FM signal on Inmarsat Russian ?

Hutchp

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Joined
Jun 29, 2023
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20
Receiving Russian ( or Ukrainian ?) music on Inmarsat Alphasat at 25E. Frequency 1552.777Mhz. Analogue FM signal about 8Khz bandwidth. Seems to be a loop of the same song being repeated. Maybe someone with better language skills than me can ID it.

Hutch
 

Hutchp

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Joined
Jun 29, 2023
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20
multiple FM signals now plus pictures in the waterfall display. Clearly some form of propaganda broadcastDDC1Waterfall.jpeg
 

Hutchp

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Jun 29, 2023
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I don't think there is any on board processing on the satellite. Transponders are all C-L/L-C. I did wonder if I might be seeing this from another satellite like one of the Russian Meridian HEO's ?
There were 8x FM channels this morning plus the waterfall image. Then at 05:58z at wideband carrier approx. 170Khz bandwidth came up over the top of them for about 10mins

Hutch
 

RFI-EMI-GUY

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Dec 22, 2013
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6,878
I don't think there is any on board processing on the satellite. Transponders are all C-L/L-C. I did wonder if I might be seeing this from another satellite like one of the Russian Meridian HEO's ?
There were 8x FM channels this morning plus the waterfall image. Then at 05:58z at wideband carrier approx. 170Khz bandwidth came up over the top of them for about 10mins

Hutch
I used to monitor Inmarsat when it was all analog. Picked up some interesting stuff. NASA may still have a transponder dedicated for downrange operations.
 

Hutchp

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Joined
Jun 29, 2023
Messages
20
Not convinced that what I am hearing and seeing is actually on Inmarsat at 25E. What would be the target audience for this on Inmarsat ? I still wonder if its a Russian Meridian HEO Sat that I am actually receiving on my 25E dish.

Hutch
 
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