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On Jun 1, 4:49*am, Cecil Moore wrote:
Gordon wrote: Well, I got an improvement, probably in spite of myself. *The setup gives better signal strength, and is less suseptable to interfearence (people walking aroung the room) than just a single bowtie. A mismatch can cause ghosting in an analog TV. What does ghosting do to a digital TV signal? -- 73, Cecil, IEEE, OOTC, *http://www.w5dxp.com It puts 'ripples' into the passband. The ripples happen because of phase cancelations. The ATI HDTV Wonder cards can handle variations to around 8-10 dB. After that it just freezes up. Near the bottom of the page in the link there is an example of the ATSC spectrum. Add random dips into it. http://www.hdtvprimer.com/ISSUES/what_is_ATSC.html G² |
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