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Re: [RFI] fence chargers

To: rfi@contesting.com
Subject: Re: [RFI] fence chargers
From: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 14 May 2013 05:42:09 -0400
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
And the usual things ... are all the connections in the fence circuit tight? Are there any leakage paths to ground such as uninsulated fence post mountings, or even tall grass close to the hot wire? But charger grounding has been a leading cause of problems around here.

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 5/13/2013 7:26 PM, n0tt1@juno.com wrote:
I'm assuming you are complaining about RFI and not
acoustics.  I'm not familiar with any particular brand
that is RF quiet.  The old battery-operated fencers
are acoustically noisy.....like bonk - bonk - bonk every
second or so...can drive you nuts on a quiet day!

The guys have said recently that an "RF choke" at the
fencer output makes a lot of difference.  That will take
the "edge" off the waveform to greatly reduce its interferrence.
Google is your friend.

Also, it's very important that the fencer has a
good grounding sysyem.  It it doesn't, the return path
via the earth can be way too long, making the fencer less effective
and increasing the length of its "antenna".

73,
Charlie, N0TT

On Mon, 13 May 2013 22:40:48 +0000 "K1TTT" <K1TTT@ARRL.NET> writes:
A neighbor just brought out an old fence charger and put it on a
small fence
around his beehive. makes a heck of a racket!  I haven't checked in
a while
but aren't there new chargers that are quieter?  Or is there a good
way to
quiet down an old one?

David Robbins K1TTT
e-mail:  <mailto:k1ttt@arrl.net> mailto:k1ttt@arrl.net
web:  <http://wiki.k1ttt.net/> http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or  <telnet://k1ttt.net/>
telnet://k1ttt.net

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