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Re: Re: OT: Electric fences

Posted by k6dgw on Aug 22, 2008; 6:11pm
URL: http://elecraft.85.s1.nabble.com/noise-blanker-tp735319p760270.html

I don't have any but several of my neighbors do.  I told them my problem
and asked if they would mind if I just ran their fence line and fixed
whatever I found every now and then.  All welcomed me.  The problem is
almost always an arc to the T-post, a tree trunk, a tall weed that has
grown up under the wire, and the like.

Greg - AB7R wrote:
> I gotta chime in here.  I have an electric fence.  It is put up correctly, and it  
> does pop on the radio.  It is nice though that the K3 noise blanker either
> eliminates it or at least reduces it to a manageable level...usually depends on the
>

Yep.  One of the fences is over a mile long, and even though it is
installed well and I've been its entire length and it is clear of arcs
and bad splices, I can still hear it weakly.  Ordinarily, the current
drawn from the charger on a pulse is miniscule ... it's just a voltage
pulse.  I suspect that the long fence exhibits enough capacitance that
it actually does draw current from the charger on each pulse, and Pwr =
Voltage X Current.  The K3 NB gets rid of all of it.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2008 Cal QSO Party  4-5 Oct 08
- www.cqp.org
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