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Old April 6th 05, 08:59 PM
Butch
 
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To the gentleman who posted the original to this thread: QST had an
article on how to convert a particular tv antenna to a vhf t/r antenna.
I can't recall how long ago, perhaps in the fall or summer.

KF5DE

Cecil Moore wrote:
Henry Kolesnik wrote:

Cecil
Good thought. As I understand it a receiver doesn't really need any
power, so if the antenna is 50 ohms and the Rx input is say 1000 ohms
most of the power has to be relflected to the antenna.



Make it one megohm and virtually all receive power in
a perfectly matched antenna is lost to re-radiation?
So by astute choice of feedline length we can choose
constructive interference or destructive interference
in the re-radiated signals? :-)