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Old February 25th 06, 09:26 PM posted to rec.radio.amateur.antenna
Ian White GM3SEK
 
Posts: n/a
Default Q about balanced feed line

Reg Edwards wrote:

"Big Endian" wrote
Actually I want to monitor the antenna because I have a splice in

the
feedline and the feedpoint is subject to wx, snow ice and rain.

Some
times the feedline itself is covered with snow and ice. I would

find it
interesting to see what is happening when I see my SWR shoot up and
retuning my matchbox. I also have a strange thing happen when I

apply
high power, I get a slight bump up in SWR suddenly. I often wonder

if
one of my end insulators are breaking down under 1KW of RF or if

there
is some imbalance on one leg due to ground or trees swaying in the

wind.

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

Perhaps you should have mentioned all this in your original enquiry.
The people you expect replies from are not mind readers!


It was clear enough to everyone else that he wanted to know how to make
measurements. It was also clear enough for you to declare that
measurements are not necessary.

Maybe this is a good time to remind you of your own favourite quotation:

"When you can measure what you are speaking about and express
it in numbers you know something about it. But when you cannot
measure it, when you cannot express it in numbers, your knowledge
is of a meagre and unsatisfactory kind. It may be the beginning of
knowledge but you have scarcely in your thoughts advanced to
the state of science."

William Thomson, Lord Kelvin, 1824-1907.




--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek