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#1
July 2nd 07, 05:41 PM
posted to sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna,alt.cellular.cingular,alt.internet.wireless
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AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency
In message , Michael A. Terrell
writes Jeff Liebermann wrote: Conventional TV is VSB (visidual side band) Vestigal Sideband Better still, Vestigial Sideband! -- Ian |
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#2
July 2nd 07, 06:13 PM
posted to sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna,alt.cellular.cingular,alt.internet.wireless
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AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency
On Mon, 2 Jul 2007 16:41:01 +0100, Ian Jackson wrote:
In message , Michael A. Terrell writes Jeff Liebermann wrote: Conventional TV is VSB (visidual side band) Vestigal Sideband Better still, Vestigial Sideband! You're both wrong. It is VIRTUAL SIDEBAND because it isn't completely real and the other sideband which isn't virtual carries the missing high frequency modulation info. Once it gets into your second detector then it becomes real due to the laws of product modulation. Next, you will be telling people that VGA doesn't stand for "virtual graphics array." -- Posted via a free Usenet account from http://www.tarrnews.net |
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