Topband: Effect of trees on vertical elements?

[Joe]

A Few years ago there was a detailed article all about this in QST.

Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
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http://www.idle-tyme.com
On 8/19/2019 6:49 PM, donovanf at starpower.net wrote:
> Hi John,
>
>
> Horizontal polarization isn't very effective on topband except for local
> QSOs. It would be far better if you could install an inverted-L vertical
>
>
> 73
> Frank
> W3LPL
>
> ----- Original Message -----
>
> From: "John Harper" <johnae5x at gmail.com>
> To: topband at contesting.com
> Sent: Thursday, August 15, 2019 11:57:49 PM
> Subject: Topband: Effect of trees on vertical elements?
>
> I'm thinking of installing an end-fed half-wave dipole as an "inverted U"
> for 160m. My tree geometry is such that the antenna would be fed at the
> base of a tree, then go up it to 120 feet. Then about 90 feet to another
> tree and down it to complete the length of the antenna.
>
> Would the close proximity of the vertical portions to the two trees
> adversely affect the antenna's performance?
>
> Last year I used my 80m dipole-110-foot vertical feedline as a top-loaded
> vertical on 160 - it worked well as a transmitting antenna but was a poor
> receiver due to noise so looking for another option.
>
> Tnx/73,
>
> John AE5X
> https://ae5x.blogspot.com
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