I think most internal auto tuners provided in radios have to be disabled in 
order to use an external tuner such as you have for your motor home antenna. 
My guess is you'd have to disable it to tune the antenna, and then reenable 
it to make fine adjustments.

----- Original Message ----- 
From: "T Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 14, 2007 1:26 PM
Subject: ts480 question


> Hi, all.
>
> Well, I am anxiously awaiting the arrival of my TS480, and just thought of 
> a
> question I could use some help with.
>
> I'll do my best to verbalize this question in a way that hopefully will 
> make
> sense.
>
> As you may recall, I'm going to use the TS480 as my main HF rig in our 
> motor
> home.  I have a Predator screw-driver-type antenna on the back of the 
> motor
> home, and I use something called a Turbo-tuner, made by N2VZ Enterprise to
> tune the screw-driver for resonance on my chosen operating frequency.
>
> The Turbo-tuner is interfaced with the Ts480 via two cables--one is an 
> RS232
> cable which goes to the front of the radio, and the other is a cable that
> connects to the AT port on the back of the rig.
>
> I am wondering if connecting the turbo-tuner in this way will 
> automatically
> disable the auto-tuner in the TS480.  Or, can the auto-tuner still be used
> to further "fine tune" the antenna once it has been tuned by the
> turbo-tuner.
>
> Thanks, and 73 from Tom Behler:  KB8TYJ
>