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

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

 

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.

 

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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
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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.


--
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prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida