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Re: Interference from electric fence?

Subject: Re: Interference from electric fence?
From: "Ray Mansell" BCTess
Date: Wed Jun 5, 2013 11:20 am ((PDT))
It's an electromagnetic pulse, and unless all of your electronics are
well-shielded, it is likely to register. The same thing happens when
lightning strikes close by - you can often hear a 'click' just before the
thunder itself appears on the recording. This click is caused by the
electromagnetic pulse generated by the lightning, and by measuring the time
difference between this 'click' and the start of the thunderclap, you can
calculate the approximate distance to where the lightning struck. I had one
last year in the woods next to the house - less than 100 feet away.


On Wed, Jun 5, 2013 at 2:10 PM, David's Mail <> wrote:

> **
> I was in despair, ready to even read the manual (that's pretty serious)
> when out with my Telinga Pro7, connected to a decent recorder. I could pick
> up birdsong with clarity, as well as an intermittent click from heaven
> knows where. I checked all the user, monitoring and recording settings,
> verified that my phone was off, routed the mic through an SQN (I'm not sure
> what I expected by doing that), emptied the grasshoppers out of the
> parabola etc. still the incessant click every few seconds. I guess you know
> where I'm going with this - sure enough, I was standing a few metres away
> from an electric fence.
> I know what it is now, on the few occasions it has occurred since.
> I couldn't say if it is the mic or the recorder though.
> David

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