On 7/31/2018 1:32 PM, Stan Zawrotny wrote:
OK, Given:
" A shortcoming of all of the single length, cover all bands antenna
is a directional pattern with lobes and nulls that are different on
every band. And a shortcoming of both antenna types is that it is not
practical to choke them effectively to kill the common mode current."
If that is a _given _to the problem that you have to solve, then what
are the solutions? Many people are stuck with having to install
antennas of that nature. For one reason or another, they are not able
to install something else. What do you advise them, besides RTFM?
Every antenna problem is different, and must be decided on the basis of
conditions. I am simply presenting the facts to help people think
through and make BETTER decisions.
I can't tell my electrician to RTFM.
You'd better make sure that he/she knows the right way to do what you need!
But several people have responded with real meaningful practical ideas
that I can tell the electrician.
I wrote two entire applications note about it and posted a link to them.
(Oh, BTW, I am 75 years old and physically no longer able to crawl
around in the attic.)
I'll be 77 in the fall.
73, Jim K9YC
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