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Old March 14th 07, 12:46 PM posted to sci.electronics.design,sci.electronics.basics,rec.radio.amateur.antenna
Tim Williams Tim Williams is offline
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First recorded activity by RadioBanter: Sep 2006
Posts: 27
Default VSWR doesn't matter?

"Richard Fry" wrote in message
...
In analog TV transmit systems with a typical 500+ foot length transmission
line from the tx to the antenna, a 5% reflection from a far-end mismatch

can
be quite visible, showing as a "ghost" image that is offset from the main
image as related to the round-trip propagation time of the transmission
line.


I've noticed that, at least in this area, Fox 39 (WQRF) has a ghost of a few
microseconds (I forget what exactly, I've calculated it before). Something
like 500 feet, IIRC.

Tim

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