Topband: Effects of trees

W2pm at aol.com W2pm at aol.com
Tue Dec 5 20:22:37 EST 2006


 
In a message dated 12/4/2006 5:08:36 PM Eastern Standard Time,  
w8ji at contesting.com writes:

Do I  think trees impact the antenna in a negative manner? 
Sure I do. So do many  other things. How much is anyone's 
guess, but any amount it hurts is  certainly meaningless when 
compared to not having any antenna at  all.

73 Tom 


Being a non powerhouse station with limited antenna real estate I agree  with 
this 100%  - any antenna is better than none.. HOWEVER, I think some  prudent 
construction practices should be observed when using trees as supports  or 
working wires among them.  Basically I never allow the wire to wrap  around a 
limb uninsulated. I have seen some people construct an Inv L by simply  letting 
the vertical wire wrap around a convenient high limb and pull out the  horiz. 
section from there.  Some also use simple rope at the ends of the  wires for 
"insulation".
 
Early wireless pioneers learned that poor insulation and contact with wet  
wood can and does seriously affect signal strenght.  So using trees is a  great 
idea when you have to - but care should be take to avoid as much wire  contact 
wiht the wood as possible by using long insulators and careful routing  
(where possible - and I certainly know that aint always possible in the brush)  ..  
 73 Pete W2PM


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