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Re: [RFI] Fence wire material advice

To: cw_de_n5op@sbcglobal.net
Subject: Re: [RFI] Fence wire material advice
From: David Robbins <k1ttt@verizon.net>
Reply-to: k1ttt@arrl.net
Date: Thu, 15 Oct 2015 14:46:38 -0500 (CDT)
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
its best to go with fence that has welded or brazed joints instead of just 
twisted or crossing wires.  any place that can get corrosion or water in a 
joint is a place for rectification or sparking to happen.


Oct 15, 2015 03:36:11 PM, cw_de_n5op@sbcglobal.net wrote:

I use a fence as part of the ground system for my shunt-fed tower on 160 m. 
What I notice most is that there is much less difference in the tuning in dry 
vs wet soil conditions. I interpret that as indicating the fence has a positive 
effect. My fencing had a black paint applied (that wears off quickly). I've 
measured continuity from end to end so there are no breaks. I have no A-B 
before and after signal measurements. If the fencing is truly insulated, such 
that there's no end-to-end continuity, it may not work as well. 

Kim N5OP

"People that make music together cannot be enemies, at least as long as the 
music lasts." -- Paul Hindemith

> On Oct 15, 2015, at 13:50, Juan EA5RS wrote:
> 
> I am going to install a 2m high metal fence around the area (20m by 20m)
> containing shack building and initial towers in our new contest station
> where we will operate M/S, so must be able to hear well on different bands
> while TXing a full KW on another band.
> 
> 
> 
> I might also try the fence itself as part of the ground/counterpoise system
> for the verticals to be installed there.
> 
> 
> 
> Looking for advice on whether it is best to go for bare metal fence wire or
> insulated metal wire in terms of RFI and ground system performance for
> verticals, as insulated wire is more expensive
> 
> 
> 
> Thanks in advance,
> 
> Juan EA5RS 
> 
> 
> 
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