Efficiency of digital - Re: [BC] Tower down in Spokane

[Harold Hallikainen]

> Don't you know?  Analog = old-fashioned and anachronistic. Digital =
> modern and the future.  That argument has already been settled by
> those who make the decisions.  There is no place in the world for old-
> fashioned things like analog and the old generation....
>
> Bill Harms
>


But, of course, the digital data is sent using analog techniques. For DTV,
it's pulses varying amplitudes where each amplitude represents a certain
bit combination. It's Ancient Modulation. For CATV, it's often QAM, which
is just two Ancient Modulation carriers in quadrature with discrete
amplitudes instead of continuously varying amplitudes...

Harold

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