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Re: [TowerTalk] followup question on verticals in trees

To: "towertalk reflector" <towertalk@contesting.com>
Subject: Re: [TowerTalk] followup question on verticals in trees
From: "Larry Phipps" <larry@telepostinc.com>
Reply-to: Larry Phipps <larry@telepostinc.com>
Date: Thu, 16 Sep 2004 11:06:51 -0400
List-post: <mailto:towertalk@contesting.com>
You might want to consider folding the top over to get rid of the excess 
length. I don't think a mild slope will hurt anything, but a fold would be 
better, especially if you're planning a phased array.. Even a small amount of 
high Q inductance at the base won't kill you if you're only talking about 
10-15% shortening... or an L-network to match the wire exactly.

Larry N8LP


----- Original Message ----- 
From: RICHARD BOYD 
To: towertalk reflector 
Sent: Thursday, September 16, 2004 10:49 AM
Subject: [TowerTalk] followup question on verticals in trees


Thanks all for the responses on verticals in woods/trees.  I haven't read or 
responded to them all yet, but plan to.

Meantime, I have a followup question that's occurred to me, another 
practical, simple, real world kind of question.

I have some trees in the woods that I am hoping are at least 130' so that I 
can put up fullsize 160M verticals without having them slope.  If it turns 
out they're only 110' or 120', so that I have to have them slope some, how 
undesirable is that?  How much do you expect the performance will suffer? 
What if the trees are only 90' or 100'?  (Although I do think the trees are 
at least 110').  Note:  the tallest trees we have here in Maryland are 
"tulip poplars," also called, I think, "tulip trees," that according to the 
tree book can get to be 150', and I think I have seen some that big over 
near the Severn River (at K3HQ's 30-acre place) -- and I measured the ones 
at my old place as 120' (by climbing my 160' tower 'til the treetops were at 
eye level and gauging it that way).  These trees have a "habit" of being 
"columnar," and I have noticed they do this when they are growing amongst 
other trees.  A tulip poplar growing by itself in the middle of a field 
tends to become rounder, not as "columnar" and straight, not as tall.  They 
aggressively grow tall to get up to the canopy top and get sunlight.

73 - Rich, KE3Q

73 - Rich, KE3Q 
_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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