[TenTec] Jupiter Auto Antenna Tuner Installation

[Brian Haren]

    Before buying my Jupiter about 5 months ago I used an IC718 and an LDG
AT-11MP tuner.  The combo was great because the AT-11MP responds to the Icom
auto tuner interface just like an Icom tuner.  Push the IC718 'tune' button
and the tuner automatically kicks in and the radio shuts off the tuner when
SWR reaches (I believe) 1.5:1 or less.  Change bands and the tuner
automatically kicks in.  Very good setup.  I now use the AT-11MP with the
Jupiter and both work great together but there is much more button pushing
involved.  A few weeks after receiving the Jupiter I wrote TT about building
external AT-11MP support into a firmware revision.  It seems to me it should
be easy to port the tuner commands to that unused auxilliary port on the
back of the Jupiter (BTW, anyone know what that port was supposed to be used
for?).  TT wrote back saying, basically, "Good idea, but because of the way
the Jupiter is built we can't do that."  Based on all of the 'so-so' reports
I read regarding the internal tuner I think I'll stick with the external
version.  So, I guess I'll just have to keep pushing multiple 'tune' buttons
for the rest of my life... (really, it's not that bad).

Brian
W8BYH


----- Original Message -----
From: "Mark Erbaugh" <mark@microenh.com>
To: "Winston F. Jones" <winjones@ix.netcom.com>; <tentec@contesting.com>
Sent: Thursday, August 15, 2002 10:15 AM
Subject: Re: [TenTec] Jupiter Auto Antenna Tuner Installation


> Winston,
>
> > Also, it sometimes tunes down to only 1.6 or 1.8 and I have to hit tune
> again to get it to tune the SWR down further. Is this the way it is
supposed
> to operate?
>
> > I have an external LDG tuner and am used to how it works. Is something
> wrong here? Please help.
>
> I, too, have an LDG AT-11MP and think it is a great tuner. I was
> disappointed with the PT-11 internal tuner for the Pegasus. I noticed that
> it did not tune to 1:1, especially on the higher bands, even when into a
> relatively low SWR. With the same load, the AT-11MP was able to find a 1:1
> match.  Just to make sure everything was installed properly, I returned
the
> Pegaus with tuner to LDG who checked it out and found that everything was
> working fine.
>
> I have removed my PT-11 and gone back to using the AT-11MP. Now, if I can
> only convince Carl to add support for automatic tuning of the AT-11MP to
his
> control software ...
>
>
> Mark
>
>
>