Topband: Effect of trees on vertical elements?

[John Harper]

Thanks for the info guys.

If only I had room for a dedicated rx antenna - then I'd leave the
top-loaded vertical as is. I was copied in New Zealand with it on 630m WSPR
with 1 watt ERP.

So a happy medium is what I'm after since an excellent tx antenna does me
no good if I can't hear those calling me.

John AE5X
https://ae5x.blogspot.com



On Tue, Aug 20, 2019 at 1:48 PM Tim Shoppa <tshoppa at gmail.com> wrote:

> John, your 80M dipole with 110 foot vertical feedline fed as a top-loaded
> vertical on 160M is a wonderful antenna.
>
> If you are unhappy with its receive performance,the solution is to add a
> receive antenna (or two, or three....!). Not to put up a worse transmitting
> antenna :-)
>
> Tim N3QE
>
> On Mon, Aug 19, 2019 at 6:05 PM John Harper <johnae5x at gmail.com> wrote:
>
>> 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
>> _________________
>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>>
>