[amsat-bb] dual band vhf/uhf antenna

[Jackie Dander]

thanks for your reply.
Yes, Kent's success is evidence that if I copied his yagi plans properly I
should do well.
I have used my built yagi to listen in on AO-91 and AO-92 (QSL attempts by
others) as well as NOAA-18, 19 ( just signals).
I noticed, by experiments, that I could pick up AO-92 with just my HT and
it's rubber duck antenna better than with my yagi. Still learning......

On Sunday, February 16, 2020, Ev Tupis via AMSAT-BB <amsat-bb at amsat.org>
wrote:

>  Hi Jackie,
> Same-plane antennas work nicely, as long as they are designed with that in
> mind. See multi-band same-plane yagi examples in the HF world.  Kent is a
> skilled designer who both engineers *and* pretests before publication.
>
> Simply interlacing antenna elements for different bands without taking
> into account their mutual interaction invites problems.
> Arrow gets around that by placing different bands in different planes.
>
> Ev, W2EV
>
>
>     On Sunday, February 16, 2020, 7:08:34 AM EST, Jackie Dander via
> AMSAT-BB <amsat-bb at amsat.org> wrote:
>
>  I built the combination dual band 2meter/70cm antenna found at WA5VJB's
> webpages. I chose the 5 elements on UHF forward and 2 elements on VHF rear.
> All elements are in the same plane.
> I now read elsewhere that in-same-plane uhf/vhf elements can interfere with
> each other. I visited the Arrow website and see their LEO antennas are
> opposing for uhf/vhf.
> My question is if i made a mistake building the uni-plane version? Why did
> WA5VJB has such success?
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> _______________________________________________
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> to all interested persons worldwide without requiring membership. Opinions
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