[TowerTalk] Birds and PVC on Antennas

Fri Jul 28 07:27:50 EDT 2006

Where'ss the PVC in SteppIr antennas??  Just curious.

Gil, W1RG
----- Original Message ----- 
From: "Rolf Moberg" <rolf.moberg at dnainternet.net>
To: <towertalk at contesting.com>
Sent: Friday, July 28, 2006 6:52 AM
Subject: Re: [TowerTalk] Birds and PVC on Antennas

> K7LXC at aol.com wrote:
>> How about putting some slightly oversize PVC tubing  over the elements? 
>> They'd NEVER be able to perch on that antenna - they'll just  roll off!
> 
> You should never install PVC to your antenna systems. PVC and RF field 
> "are not friends", even some US manufacturers (SteppIR) uses PVC in 
> amateur antennas. I cannot explain is it extra loss due to permeability 
> of PVC or which magnitude it is. Maybe somebody understands this topic 
> better?
> 
> Rolf
> oh6kxl
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