• Offizieller Beitrag

    Around 30°W, there are 2 spikes (Beacon ?) in Cband extended


    4415 R
    4445 L


    There are no other C-band program at this position.


    :86:


    hvdh at the rescue please ? :79:

    • Offizieller Beitrag

    The band 4400...4500 MHz is for fixed & mobile (military) only.
    A satellite using this band would be, at least, very sercretive...


    Extended C-band for satellite is 4500...4800 MHz.
    (Fixed & mobile military also uses this band)


    So I think you get these signals from a sidelobe...
    If your dish farm has a few spares, :11: you could scan the horizon for the direction of such earthly signals.


    Edit: And the spikey stuff in the band 4200...4400 MHz, could be radio altimeters aboard aircraft.
    http://www.ntia.doc.gov/files/…00.00-4400.00_01MAR14.pdf

    • Offizieller Beitrag

    Thanks hvdh for your help.


    I thought first, about Spainsat but no Cband .

    • Offizieller Beitrag

    qwer: Just to confirm, that I am wrong, can you check around 30°W , the signals are still active now.


    can you confirm if you have something or not ?

    • Offizieller Beitrag

    Sorry Feedsat, I can´t find this spectrum here. :79:


    • Offizieller Beitrag

    OK, this report confirm hvdh's informations.


    danke

    • Offizieller Beitrag

    finally this signal is still there, I will never know what is it exactly.

    • Offizieller Beitrag

    Tried again, but nothing to find in spectrum here... :28:


    • Offizieller Beitrag

    A quick look at this position and the signal is stilll there and strong


    probably a local signal.

    • Offizieller Beitrag

    My circular left spectrum.

    Bilder


    • Offizieller Beitrag

    Just my (circular) spectrum.

    Bilder


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