| Dave, with ipmost and all due respect those mentioned auto-tuners do NOT 
adjust the resonance of the antenna... they are purely impedance matching 
devices... some do understand the terminology and the physics ;-)  You can 
dumb down the tech talk but that doesn't change the fact...K 
73,
dave
wa3gin
----- Original Message ----- 
From: "David Gilbert" <xdavid@cis-broadband.com> 
To: <towertalk@contesting.com>
Sent: Saturday, May 03, 2014 11:38 AM
Subject: Re: [TowerTalk] "Antenna Tuner"
 
They adjust the resonance of the >system<, and therefore are indeed 
"tuners".  It's all the same thing, except of course for the feedline 
effects of SWR. 
That being said, I have never understood why so many hams get hung up on 
the semantics of the terminology instead of bothering to understand what's 
really going on. 
Dave   AB7E
On 5/3/2014 5:56 AM, Marsh Stewart wrote:
 Someone posted the following on the subject of antenna tuners: "They 
aren't
adjusting the resonance of the antenna, so what are they tuning?"
When I adjust the capacitance and inductance of my "antenna tuner" my
antenna does not change length or height, and the length of the feedline
does not change. Could it be because it is not really an "antenna tuner" 
but 
is actually an impedance matching network?
Marsh, KA5M
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