In my previously described antenna system I said I was using a 4:1 current.
I did this after initially trying out a 1:1 current balun but got much
better results when I changed to the 4:1 balun.
73, Joe W2KJ
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> One doesn't need a lot of space or high supports for a wire antenna. In
> fact if one desires to use a wire, make it as long as you have space and
> supports. Feed it in the center with a balanced feed line to a 1:1 balun
> and then to any of the multitude of tuners available. With this
> arrangement
> actual antenna length is relatively un-important. Granted, a resonant or
> near resonant antenna will work a bit better. In my case it's a 256 ft
> center fed wire at 50 ft.
>
> I know one respondent on this thread said use a 4:1 balun. While that
> works
> in most situations, realize that the step-down is a divide by 4 condition.
> Should the load present a Z that is in the order of 25 ohms which is then
> divided by 4 or 6.25 ohms, I would question if the tuner has very good
> efficiency at the required operating Z. I doubt it. Most will only go to
> 12 to 15 ohms on the low end.
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