[Elecraft] Elecraft Antennas in trees

n4lq n4lq at insightbb.com
Mon Jul 28 13:49:58 EDT 2008


I use a reel with 6 lb line and a wrist rocket  from Walmart with a lead 
fishing weight. Lay the reel on the ground and shoot the weight over the top 
of the tree. I try to avoid large limbs. You want the line over the soft 
bushy limbs. They act as a spring or shock absorber. Use the line to pull up 
some nylon twine then use the twine to pull up your rope. The wind can blow 
all it wants and those soft limbs act like a nice cushion. I've even been 
know to run insulated antenna wire right through a tree with no ill effects 
on the HF bands.
Steve Ellington
N4LQ at insightbb.com
----- Original Message ----- 
From: "Ralph Tyrrell" <w1tf at yahoo.com>
To: <Elecraft at mailman.qth.net>
Sent: Monday, July 28, 2008 1:37 PM
Subject: RE: Re: [Elecraft] Elecraft Antennas in trees


> The ARRL Antenna Book suggests using a pulley and counter weight to allow 
> for the varying distances between trees caused by wind. At my former QTH, 
> Ellijay GA, I noticed that in very gusty conditions sometimes the support 
> trees moved in opposite directions at the same time. I decided to make my 
> counterweight out of an eight foot length of 5/16" chain. Put about a 
> third of the length of the chain on the ground during no wind conditions. 
> Now as the wind moves the trees more of less of the chain gets lifted off 
> the ground. This gives a gradual increment in the weight of the 
> counterweight. The antenna that I had up was 88' of #18 insulatd wire up 
> 40', center fed with 450 Ohm line.
>
> With this antenna I got into ECN on 40 and 20 using the K1 just about 
> every time I tried. (Kevin, wish I could find a place for this type of 
> antenna where I now live.)
>
> I was concerned about the sudden change of weight caused by a solid one 
> piece weight hitting the ground or lifted off the ground. With one third 
> of the chain on the ground the weight does not swing in the breeze.
>
> 73, Ty, W1TF, K1 #1423,  K3 #696
>
>
>
>
>
>
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