[BC] CBS Color...lived on

[RRSounds@aol.com]

In a message dated Sat, 3 Jun 2006 21:26:45 -0700, PeterH5322 
<peterh5322 at rattlebrain.com> writes:
<<
> >And therein lies another possible source of confusion: Because
> >fully-compliant NTSC resolution can be better (and is, in the studio
> >before transmission), the real limitation is indeed the transmission
> >medium (over the air and cable), a bandwidth restriction imposed by
> >the 6 MHz analog broadcast channel. Before it hits the transmitter,
> >NTSC video can actually look pretty damn good.
>
>The lower sideband is not bandwith limited, wereas the upper sideband is
>bandwidth limited so as to accommodate the FM audio, which is 4.5 MHz
>above the AM video carrier.
 >>

You're right about the upper sideband.
The lower sideband's bandwidth with NTSC TV is, however, quite 
limited; it is called "vestigial," because little of it remains after 
filtering. Our TV transmission's video signal is very nearly 
single-sideband (upper), with carrier.


Kind Regards,
David