Article View: chi.media
Article #514Re: That digital stuff
From: clifto
Date: Fri, 27 Jun 2008 22:25
Date: Fri, 27 Jun 2008 22:25
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2197 bytes
Bruce Esquibel wrote:
> With the ntsc/analog system, I beleive the minimum voltage you wanted down
> from the antenna was 1000 microvolts on any channel. That figure was high
> enough for any tv to pick up an acceptable and usable signal. The point to
> make here is, if on any particular channel you were getting 1000uV or
> 10,000uV, there wasn't any difference in the picture/sound. As long as
> 1000uV was available, you got a good picture and clear sound.
We used to go for 3000 mV, to have enough to overcome ghosting from downlead
pickup / mismatch / etc. 1000 *good* mV gave a good picture, as you say.
--
Britney Spears' Guide to Semiconductor Physics
<http://britneyspears.ac/lasers.htm>
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