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Old July 8th 05, 03:42 AM
Cecil Moore
 
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Buck wrote:

I have installed a 135 foot dipole which I tune for all bands but 6
and 20 (I have dipoles cut for those bands.)

Well, one of the locals and I were discussing a loop antenna. He
insists that the loop is better fed with 65 feet of 75 ohm coax and
then 50 ohm coax to the tuner for the radio. I was saying there would
be less loss by using a 300 ohm twin lead since it was being tuned for
all the HF bands and 6 meters, with open wire or ladder line being
better options. He insists that if the loop is properly made, it is
better to feed it with the 75/50 combo which properly matches the
antenna. any thoughts?


The 75 ohm matching section is for a single frequency (narrow-banded).
On that single frequency, it is probably just as good as the twin lead
model. However, on other bands than the one for which it is designed,
it will probably not function as well as the twin lead model. Your
"local" just proves that a little knowledge is a dangerous thing.
Do you want a multi-band antenna or a narrow-banded single-band antenna?
--
73, Cecil http://www.qsl.net/w5dxp


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