Thread: Balun
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Old July 15th 03, 08:24 PM
Mark Keith
 
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Telamon wrote in message

I only looked at a few frequencies but those were near the frequency for
which the antenna was cut. Išm not worried about the other bands. I want
to know why I did not get a higher S meter reading on the band the
antenna was cut for. The transformer should have made for a better match
on 13 meters and it didnšt.


I think mainly because the antenna is "folded". I tried modeling a
folded 40m dipole last night just to look at a few bands. At it's
design freq, the feed impedance is pretty low. You might need to
reverse the transformer to get a better match on that band if it was
set up to match mainly Hi-Z loads. If you want a good match to coax on
one particular band , I'd go to a straight dipole, not folded. I've
never used folded dipoles, so I'm not sure of any quirks they may have
as a multiband antenna. But really no matter...It sounds like you have
enough signal level no matter what route you take.
MK