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#81
July 10th 11, 03:02 AM
posted to rec.radio.amateur.antenna
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Reflection coefficient for total re-reflection
On 6/29/2011 11:04 AM, Cecil Moore wrote:
A re-reflection preserves the modulation content of the re-reflected wave which can be proved by TV ghosting experiments. Wave cancellation due to destructive interference does NOT preserve the modulation. In fact, any differences in modulation between the two superposed wave components would wind up incident upon the source. -- 73, Cecil, w5dxp.com Oh, yeah? |
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#82
July 10th 11, 04:21 AM
posted to rec.radio.amateur.antenna
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Reflection coefficient for total re-reflection
John S wrote in :
Oh, yeah? Simply, the conditions for steady state analysis are not satisfied by TV bandwidth modulation on a long feed line. This is the reason why some matching schemes that are quite suitable for SSB telephony on feedlines of a few hundred metres are not used with TV on long feedlines. Owen |
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