[TowerTalk] Twin lead feedline

[Guy L. Olinger]

Hi,

Just to clarify, that in searching out the kinds of open wire available,
the 14 gauge stuff that was advertised by the Press (his product #554)
is plainly marked as "440 ohm" on the web page. Always was.  See
http://www.thewireman.com/balance.html .

An inquiry as to why the 440 ohms, brought a short version of the story
in the quoted mail. So I fail to understand an attribution of deception.

I have no commercial or personal relationship with Press.  

73, Guy.

DavidC wrote:
> 
> > I feel kind of obligated to respond to the question regarding "450" ohm
> > "window" type ladder line, since we are responsible for some of the
> > error. The earlier models were solid, 19% copper clad steel. We insisted
> > on 30 %and a better polyethylene jacket, and supplied the wire for a
> > stranded 18 gauge model as well, which was actually 40% -as a pilot run.
> > The stranded was so successful that we contracted for a 16 gauge model in
> > reworked dies, and a bit later, 14 gauge. The only way that the MFR could
> > see their way to do this on a relatively low volume operation was to use
> > the same machinery for all of them, modifying only the extrusion orifices
> > - not the width set. Obviously, then, as the wire gauge got larger the
> > error from the original years ago design at 450 ohms, nominal, increased
> > downward.
> > Press Jones, N8UG, The Wireman, Inc., Landrum, SC, 29356
> 
> So, if I understand this correctly, the 14 gauge, nominally 450 ohm line

> that I bought is actually something other than 450 ohms; and rather than
> being less sensitive to environmental conditions (the reason other than
> physical strength that I bought the heaviest) it is more sensitive?
> 
> So if it is carrying ice, in a heavy rainstorm, exposed to ash or other
> pollution, it is likely to underperform relative to the 18 gauge 450 line?
> 
-- 
Guy L. Olinger K2AV
k2av@qsl.net
Apex, NC, USA

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