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Old April 10th 04, 11:39 PM
Mike Coslo
 
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Bob wrote:
Hi, Thank you for your response. I do not have ladder line and only have the
coax basically. Is it acceptable for good results to simply use the coax and
then split it out to each direction of the copper wire? And not use the 1:1
balun? I was hoping to simply get the dipole in the air and leave it and
simply tune it at the transmitter to acceptable SWR and go from there. Now I
only get good SWR on the 80meters because of the length it is cut at. I was
hoping also to use the dipole with the tuner on 10, 15, 20 and 40. Is this
possible? The tuner is good and I know I will lose the power to the tuner
but would still get to use the other bands when needed.
Any more advice is greatly appreciated.
thanks
Bob


The 1:1 balun isn't effecting the match on the other bands. If you
remove it, there probably wouldn't be much difference at all.

You could maybe put traps on the antenna so that it will be able to
resonate on multiple bands.

Another option would be to make multiple dipoles for the other bands.
The impedance mismatch will make the signal tend to go down the dipole
that corresponds to the desired band. Think of that sort of dipole as a
fan so to speak. If you go this route, You'll want to trim the lowest
band first, then work your way up in frequency for the other parts of
the dipole.

But all of these options are a good deal more work than the ladder line
method. But if you won't or can't use ladder line due to your
circumstances, I'd try the fan dipole.

- Mike KB3EIA -





 
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