[TowerTalk] Auto antenna tuner

[Jim Lux]

----- Original Message -----
From: "Alan C. Zack" <k7acz at cox.net>
To: "Noel" <y.yaesurigs at verizon.net>
Cc: "'Jim Lux'" <jimlux at earthlink.net>; <towertalk at contesting.com>
Sent: Sunday, March 28, 2004 4:31 PM
Subject: Re: [TowerTalk] Auto antenna tuner


> Why not one step further and build one into the amp itself as has been
> done with Xcvrs?
>

Because the tuner should really be at the antenna, not at the amplifier.
Otherwise, you've got circulating reactive currents flowing through the
feedline to the tuner and back, which just goes to heating up the feedline.

One would want the "controls" for the tuner at the amplifier, and you'd want
some sort of scheme to prevent the amp from cooking itself or putting out a
lot of power if the tuner has broken or can't find a match.