Re: [Discuss-gnuradio] Questions about receiving signals of Inmarsat I-4 Satellites

[Cheng Chi]

Hi Sylvain,

May I know what's the setup you used for receiving the signal? The spectrum looks very clear.

Best regards,

Cheng Chi

On Sat, Mar 29, 2014 at 11:39 PM, Sylvain Munaut <address@hidden> wrote:

This is what I found for inmarsat :

http://i.imgur.com/KygwHdD.jpg

Some 200 kHz channels and some 50 kHz channels.

There is also some 30 kHz channels with a small 'X' periodically in
the spectrograme. Those are GMR-1 and probably leak through from
Thuraya (either reflections off buildings, or my antenna polarization
sucks). Or maybe inmarsat has some GMR-1 carriers, but I doubt it.

Cheers,

    Sylvain

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