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Re: AK coast guard tower

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I am assuming that the "better signal" comes from modeling the system using
NEC-2 or NEC-4  software (Finite Element) that takes account the neighboring
conductive materials, when calculating the electromagnetic radiation
distribution.  In structural engineering we deal with something we can see
and put our hand on, but with electrical and radio stuff we are dealing with
the invisible ... blackart, magic.Sometimes you just gotta believe.

Rich
-----------------------------

Richard M. Beldyk, PE, CPEng, NSPE, MIEAust, CWEng, CPE



----- Original Message -----
From: "jim jensen" <doublejtp(--nospam--at)yahoo.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Saturday, June 28, 2003 1:31 AM
Subject: Re: AK coast guard tower


> What would happen if you just left the guys at the
> 140' and also installed new at the 150'?? I'am
> assuming, "guys" = guy wire, as in support wires.I
> don't understand where the better signal comes from.
> Jim Jensen
> --- Jan Harris <jan(--nospam--at)libertyeng.net> wrote:
> > Had a call this morning requesting an analysis of a
> > 150 ft tall guyed
> > antenna tower in Alaska.  They are interested in
> > relocating the guys from
> > the 140 ft elevation to the 150 foot elevation.
> > This going to give them a
> > better signal.  Tower is owned by Coast Guard.,
> > requires Alaska PE
> > registration, Tower drawings are available, project
> > requires analysis
> > complete in "three to four" weeks.
> >
> > Please email me off list if you can assist.
> > Thanks
> >
> > Jan M. Harris, PE
> > Liberty Engineering, PC
> > Virginia Beach, VA
> >
> >
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