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Old December 6th 05, 02:45 PM posted to rec.radio.amateur.antenna
Michael Coslo
 
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Default dipole and balun question



RB wrote:

Fell prey to the old "don't engage mouth prior to engaging brain" syndrome.

Sorry about the confusion I caused. My bad.

Was just wondering if coax feed with balun at centerpoint would be better
than ladderline feed with balun at tuner output (and no, my tuner doesn't
have an internal balun).



Didn't you say you had an unbalanced tuner? Most modern ones have a
balun to perform that function. I suspect there is one in there. I have
been toying with an "old school unbalanced one that uses a couple roller
inductors, but I haven't seen too many of those around.

At any rate, if you put up 140 feet of dipole, and want to work 160-10
meters, you *should* be using balanced line, and a tuner that can handle
that.

Trying to use a coax fed system and tuner in this manner, you'll not
have very good luck. The coax will have problems at some of the very
high mismatches at some frequencies.

- 73 de Mike KB3EIA -