[Lowfer] Alien e-probes

Wed, 17 Sep 2003 18:31:23 -0400

Peter,

Sorry, but I don't believe we have any more reasons to carry on a discussion 
about this.

Bill A

>From: "Peter Barick" <[email protected]>
>Reply-To: [email protected]
>To: <[email protected]>
>Subject: Re: [Lowfer] Alien e-probes
>Date: Wed, 17 Sep 2003 16:12:32 -0500
>
> >>> [email protected] 09/17/03 12:14PM >>>
>
>In order to figure out how to optimize E-probe performance it may be
>necessary to agree on a model for the wave that we trying to get a
>sample
>of. So let's put aside all the back and forth questions for a moment
>and see
>if we agree on the following.
>
>-- okay, assuming also this foray will some what resolve my original
>goal (remember, the GP?) and lead to denouement. ;-)
>
>First the surface wave:  My feeling (and this is based more on actual
>e-probing, and thinking about the data, than textbook info) is that the
>LF
>wave travels along the conductive ground and the has a curved )))))))))
>
>equal-potential cross section. When we probe the wave with antennas of
>
>various heights (as long as they are much shorter than a WL) we measure
>
>nearly proportional increases in strength because the voltage at any
>height
>is greater than the voltage at ground level on an instantaneous basis.
>
>-- Agree, that why I want it at top-o-tower.
>
>Conversely if the wave moves along with a straight llllllll
>equal-potential
>cross section there would be no gain when probing the wave at increased
>
>heights. We could probe this signal with two ground mounted E-probes
>and the
>differential voltage would be proportional to the spacing.
>
>The sky wave could have a straight ////// equal-potential cross section
>but
>the angle in this wave would have the same effect on the E-probe as
>does the
>curved surface wave, so the voltage also increases with height.
>
>What do you think?
>
>Bill
>
>-- On these points I have no basis for an opinion except that I haven't
>seen the case for "straight line" waves at LF and "sky wave" at LF? I'm
>not familiar with it, esp. as an expected phenomenon. So keep fleshing
>it out, Bill, I wanna see where this is leading.
>
>[flame shield activated]
>
>Peter
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