Thread: SWR again.
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Old November 28th 05, 09:05 PM posted to rec.radio.amateur.antenna
Reg Edwards
 
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Default SWR again.


"Cecil Moore" wrote
The tuner SWR meter only indicates the SWR on the 50 ohm coax
between the transmitter and the tuner. However, I have an SWR
meter on the antenna side of my tuner and it does indeed indicate
the SWR on my transmission line.

XMTR--SWR meter#1--tuner--SWR meter#2--50 ohm coax to a G5RV

SWR meter#2 does indeed indicate the SWR on the coax feed to
my G5RV. It obviously does not indicate the SWR at the antenna.

======================================

Cec, you are not telling the whole truth.

The meter tells you nothing about the important main G5RV transmission
line. ie., the SWR on the ladder line between the end of the coax and
the antenna. Neither can it tell you what the antenna input impedance
is.

There are other ways of finding the input impedance of the G5RV
antenna and its effect on line SWR if you should ever be sufficiently
interested. You could use a computer program. ;o)
----
Reg.