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Using an FM-Carrier for the Y [Luminance] Signal -- how to relievethe bandwidth issue?

Discussion in 'Electronic Components' started by Green Xenon [Radium], Sep 23, 2007.

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  1. Hi:

    One major reason the luminance signals of television are broadcasted on
    an AM-carrier instead of FM is because FM requires large amounts of
    bandwidth. Is there a way to use FM video without hogging so much bandwidth?

    Quotes from
    http://groups.google.com/group/sci.electronics.basics/msg/0c013cf5371da8dc?hl=en&
    :
    Does this mean that Quadrature Modulation and Constellation Modulation
    can -- at least in theory -- be applied to FM video so that excessive
    bandwidth is not needed? If so, then what would be the minimum
    radio-frequency required to transmit the video signal?


    Thanks,

    Radium
     
  2. No.

    These are like special modified forms of AM.

    You can only use these to reduce bandwidth of an FM signal in the same way
    that you can use AM to reduce the bandwidth of an FM signal. It just won't
    be FM any more.
     
  3. -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1
    Okay now you're actualy irritating me quite a LOT.

    Please, do yourself a favour: buy an Amazon book voucher and shut up.

    - --
    Brendan Gillatt
    brendan {at} brendangillatt {dot} co {dot} uk
    http://www.brendangillatt.co.uk
    PGP Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBACD7433
    -----BEGIN PGP SIGNATURE-----
    Version: GnuPG v1.4.3 (MingW32)

    iD8DBQFG9uKPkA9dCbrNdDMRAtP9AJ4xZmGP4ddHyLo70Clu4G4SoXMb/wCgoMAp
    Se9q9zpwU9waE4vqg+vN2xg=
    =+5XT
    -----END PGP SIGNATURE-----
     

  4. radium is a troll. he tries this crap on a lot ot different
    newsgroups, and asks stupid questions to entertain himself. If you
    don't believe me. look at his posting history on Google Groups, then
    kill file him.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
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