Jose (et al), I respectfully and strongly disagree that this QST article
applies to 160m to the degree described in that PDF (which does not even
mention 160 meters!). I DO agree with the findings in that PDF *for those
higher bands*.
However, I do agree that it's probably a bad idea to have the vertical
portion of an inverted-L stapled to a tree trunk. :-)
The effects of nearby trees or woods and their attenuation at 160m have
been discussed to a great length here in the past by many Topbanders far
more experienced than I am. Before anyone takes exception to what I am
saying, please do a search in the Topband Reflector Archive for "trees",
"woods", etc.
My inverted-L (http://www.w0btu.com/160_meters.html) was in a dense woods
of oak trees, and anecdotally I can say that it worked very well indeed,
thank you very much!
And it'll be back up before winter. :-)
73, Mike
www.w0btu.com
On Sun, Sep 23, 2018 at 11:19 AM JC <n4is@n4is.com> wrote:
> Hi Ed
>
> One of most impressive study about Tree and antenna performance was
> presented few month ago by Dr. Kay Siwiak, KE4PT during the South Florida
> DX
> association. The study was based on years or resources at Motorola about RF
> on living body.
>
> Live tree does affect RF performance. There are more information on QST Feb
> 2018 pg 35 to 39 , Kai Siwiak, E4PT,and Richard Quick, W4RQ
>
> Here you can download the presentation
>
>
> https://qsl.net/k4fk/presentations/2018-May-02-KE4PT-LiveTrees-SFDXA.pdf
>
> Very interesting stuff. I love the last comments on page 18
>
> "In Practice, everything works, but we don't know why"
>
> " In Theory, we know everything, but nothing works"
>
> We combine Theory and Practice:
> NOTHING WORKS, AND WE DON'T KNOW WHY!
>
>
> 73's
> JC
>
> -----Original Message-----
> From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Edward
> via Topband
> Sent: Sunday, September 23, 2018 1:40 AM
> To: topband@contesting.com
> Subject: Topband: Inv L in Tree
>
> Has anybody snaked a wire up a tall tree trunk to make an Inv L?
>
> Any interaction? Success?? Has to be stealthy because the tree os my
> neighbor's :-)
>
> Thanks,
> Ed NI6S
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