[RFI] RE:[TowerTalk] electric fence qrn

[Hare,Ed, W1RFI]

>From my experience, the problems with electric fence interference do not come from the pulsers. Those can generate some real fast transients as they are turned on and off, but then what one would hear is click-click............click-click, spaced at the pulse repition rate.

What most hams report as problems is buzz........buzz, at the PRR. This is almost always caused by defects on the fence itself.  Splices that are good enough for the fence to work can be RF noisy.  Gate hooks are another source of noise on fences.

For a good background article that may just convince a neighbor to work with you, see:

http://www.arrl.org/tis/info/fence.html

73, 
Ed Hare, W1RFI
ARRL Lab
225 Main St
Newington, CT 06111
Tel: 860-594-0318
Internet: w1rfi at arrl.org
Web: http://www.arrl.org/tis



> -----Original Message-----
> From: Morse, Earl (E.A.) [mailto:emorse at ford.com]
> Sent: Wednesday, December 10, 2003 12:25 PM
> To: 'rfi at contesting.com'
> Subject: [RFI] RE:[TowerTalk] electric fence qrn
> 
> 
> Yes it should do some good.  Select a ferrite that would be 
> effective at the desired frequency such as a 73 material for 
> below 30 MHz.  The windings should be of insulated wire since 
> this ferrite material has a rather low resistivity.  A 
> resistor in series with the charger and fence would also help 
> damp some of the pulse ringing. 
> 
> Earl N5TU
> kz8e at wt.net
> 
> >Would it do any good to install, say a ferrite choke, at any of the
> >noisy pulsers? ....that's assuming there are no areas in the fence
> >line that are arcing over.
> >
> >73,
> >Charlie
> >N0TT
> 
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