[Lowfer] Tree Experience

[Dick Goodman]

I had a tree once! 

-----Original Message-----
From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net]
On Behalf Of riese-k3djc at juno.com
Sent: Friday, December 27, 2013 8:25 PM
To: lowfer at mailman.qth.net
Subject: Re: [Lowfer] Tree Experience

Bill did experiment with the nail inna tree ,, I believe he passed around
the time he was playing with it Bill was the big LOOPER guy and proved you
could make/use a loop as a good restricted antenna for LF kinda miss Bill

Bob K3DJC

COn Fri, 27 Dec 2013 15:49:51 -0500 Warren K2ORS <k2ors at verizon.net>
writes:
> Jay, John,
> 
>        I thought that Bill Ashlock's tree antenna was a random wire
> 
> supported by a tree and fed with a 9:1 or 16:1 transformer?
> This was his setup in Ellsworth,NH in any event...
> 
> 
> 73 Warren
> 
> 
> On 12/27/2013 3:23 PM, jrusgrove at comcast.net wrote:
> > IIRC, Bill Ashlock was using a 'Tree Antenna' for receiving
> lowfer
> > stations many years back. Seemed like he got decent reception.
> >
> > Jay
> >
> >
> >
> >
> > ----- Original Message ----- From: "JD" <listread at lwca.org>
> > To: "Discussion of the Lowfer (US, European, &amp;UK) and MedFer
> bands"
> > <lowfer at mailman.qth.net>
> > Sent: Friday, December 27, 2013 3:10 PM
> > Subject: Re: [Lowfer] Tree Experience
> >
> >
> >>>>> or is the relatively strong signal from the 50KW station also
> >>>>> creating some level of   "ionic" non-linear conductivity 
> process
> >>>>> within in the tree(s)---which then a portion thereof is
> re-radiated
> >>>>> or otherwise coupled to the e-probe?
> >>
> >> A much simpler explanation may involve the height of the trees.
> >>
> >> Although trees are highly resistive "antenna elements" by nature,
> they
> >> are still subject to resonance effects.  Their relatively large 
> >> diameter and their inherent capacitive loading mean that most any
> full
> >> grown tree can have a substantially different amount of
> interaction
> >> with a 2040 kHz EM wave than it does at 1020 kHz.  Not only the
> height
> >> of their trees, but also the spacing, will directly affect the 
> >> relative levels of carrier versus harmonic at any given point,
> since
> >> they can form a low-efficiency directional array of sorts.
> >>
> >> I was able to witness this effect first-hand at an AM station a
> little
> >> over 20 years ago, while trying to show the owners why they
> needed to
> >> deforest (no pun intended) the site to its early-1950s condition
> if
> >> they wanted the same coverage they had back when the station was
> new.
> >>
> >> John
> >> ______________________________________________________________
> 
> 
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