[TowerTalk] Bead chokes on feedlines; K3LR array
Pete Smith
n4zr at contesting.com
Mon Nov 8 17:26:32 EST 2004
My problem is that I don't know enough to know how to go about making that
judgment -- can you offer any suggestions?
Are you suggesting that I might put the chokes at the switchbox end
instead, or elsewhere? I already have a choke where my feedline enters the
house, so I think this has more to do with the antenna's performance than
with common mode problems in the house.
73, Pete N4ZR
At 03:31 PM 11/8/2004, Tom Rauch wrote:
> > When I built this array, I put 50-bead chokes at each
>feedpoint, thinking
> > that I would help suppress common mode currenst and
>thereby avoid any
> > destructive interaction with the antenna pattern. Now,
>however, Tom makes
> > me wonder if this is useful at all, given that the
>feedlines are in the
> > very near field of the dipoles anyway. Would I be just as
>well off to
> > eliminate the chokes altogether, or do they serve a useful
>purpose,
> > assuming they are of the right material and have enough
>inductance to do
> > the job?
> >
>
>If the feedlines parallel the elements, I'd sure look close
>at what the baluns do and where they are located.
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