[TowerTalk] How much do trees really affect verticals

[Roger (K8RI) on TT]

On 8/24/2014 10:22 PM, k9kl wrote:

I only can reply in generalities. I'm sure there are others much more 
knowledgeable than I, at least I sure hope so.

It all depends. Time of year, frequency, distance to the trees, and 
height of the trees.  75/80 should be less affected than the higher 
bands. At 40 to 50 feet I've not "noticed" a problem, but I have no way 
to compare the AV680 against the same antenna out, well in the clear. So 
my "looks good" might not stand up well in a head to head comparison, or 
it might.  During Fall and winter, I'd expect the least problem (if 
there is one.) On 40, I worked a lot of DX, summer and winter with 
center fed, half wave slopers and an AV640 during a couple years of the 
sunspot cycle low.

With a 1 acre lot holding a house and shop along with two towers, I 
really don't have room to do justice to a 4 square on 75/80

As I said, I have seen no problem here.  The big, tall trees are Ash. 
Tall, straight, and dead!  Due to the Emerald Ash Borer our wood is 
quarantined.  The bugs can kill a huge tree in a couple of weeks.  Peel 
the bark off and it's a maze of groves.  They basically cut off the sap 
flow.  We had a row of Spruce down the north side of the yard and 7 big 
Ash trees.  All gone, except for one dead spruce.  I forgot to stipulate 
that lone tree near the back of the lot and they were already gone when 
I got home.

  73 es good luck!

Roger (K8RI)

> I have been clearing some land to plant more maple trees for my sugar bush to make maple syrup in the spring.  While I resting I thought of all the room I am clearing for a 4 square for 75/80. There are 40 some deciduous trees on the land which is about 150 feet by 350 feet. Prime farmland, stream bottom with about 4-5 feet of topsoil. Its about 200 feet from my house/shack.
> How much are those trees really going to affect the antennas?
>
> Gregg K9KL
>
>
>
>
> Sent from Samsung tablet
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-- 

73

Roger (K8RI)


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