On 2/14/2011 11:53 AM, Mike Ryan wrote:
>
> I bought an ISOPOLE antenna for the 220 band on ebay a couple of years ago.
> I was NEW in the box. I am trying to use it now and it appears to indicate a
> DEAD SHORT.
It's normal for many antennas from the ISOPOLE to the 12 L yagis I use
on 2-meters show a short when an ohm meter is connected across the
terminals. That is normally due to the matching network
> I have heard of antennas being a rotatable dummy load,
That is referring to the performance.
> and all
> that. But thought that something as simple as this should be a breeze.
> Perhaps someone else has had a similar finding with an ISOPOLE vertical that
> discovered some magic pill? Any help would be appreciated. - Mike
Yup. The ISOPOLE should show a short with an ohm meter. You are reading
across a coil/inductor in the base of the antenna. The ISOPOLE works
well, but many antenna work a lot better<:-)) Compared to a set of
beams, or even one of the collinear verticals like the 21' tall Diamond
or Comet antennas and it comes out a poor second.
What the ISOPOLE has going for it is relatively low price, easy to
assemble (although those cones are fragile), easy to put up and it does
work.
73
Roger (K8RI)
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