"Just DO the common mode choke on any vertical. Don't tempt Murphy."
I stand by my comments.
I find after some interesting conversations that readers of posts
often read as if written to them. So I write my posts as to the
general audience. If an expressed situation is so specific as to be
exceptional to general use, I reply in private.
*Of course* there will be a few situations where this general purpose
rule won't add any value. The question is whether a specific owner
has the equipment and technical knowledge to identify those
situations, which are highly specific and subject to all kinds of
local influences, and whether one can post a textbook to explain the
choices.
And while theoretical situations are raised, I continue to this day
finding situation after situation where a vertical needs common mode
blocking to help fix it, and I've not ever once had to tell someone to
REMOVE a common mode choke at a vertical feedpoint.
I was speaking of vertical feedpoints. Dipoles are another subject.
73, Guy.
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Remember the PreStew coming on October 20th. http://www.kkn.net/stew for more
info.
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