[Lowfer] NC

Thu, 21 Nov 2002 13:02:05 -0500

> and the new tree probe (BTW, it's not a whip, as such, but just a 20ft #12
wire looped over top of a 50ft high limb, plus a wire to a pipe in the
ground near the trunk of the tree).

So, we are just talking about a short wire antenna in very close proximity
to a tree?

I thought we were reviving the old design of actually "tapping" the tree as
an active element. That showed much promise the last time it was tried (for
ELF, if I remember correctly).

Mike
wa1ptc

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Bill Ashlock
> Sent: Thursday, November 21, 2002 12:51 PM
> To: [email protected]
> Subject: Re: [Lowfer] NC
>
>
> John A,
>
> Bill sez >>fade conditions were such that I couldn't make out
> your full ID.
> John replies>You've got to allow Bill a little slack, here. He puts these
> whips way >up in the trees, and then watches the signals "fade" when the
> wind >picks up.
>
> OK mister smarty pants, hot shot, world renowned, grabber of
> small signals;
> show us what YOU have from NC last night! <G>
>
> The experiment for tonight, with your Engineering Approval, will
> be an A/B
> comparison between my old amplified loop and the new tree probe
> (BTW, it's
> not a whip, as such, but just a 20ft #12 wire looped over top of
> a 50ft high
> limb, plus a wire to a pipe in the ground near the trunk of the
> tree). We're
> talking the extreme of eloquent simplicity -like the Ashlock TX
> loop (plug
> #52). <G>
>
> I remembered that Bill B (That's Bill Bowers. Used to have Bills
> A through
> D) had an article in the Lowdown some time back about matching different
> lengths of 'longwire' receiving antennas to a coax line using a stepdown
> transformer. Found it last night, and it's March '96. His shortest length
> was 50' and he showed that a 4 to 1 ratio improves the signal
> approximately
> 8X over a direct connection to the line. This closely matches my
> use of a 10
> to 1 ratio for an antenna length of 20ft.
>
> Bill A
>
>
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