[TenTec] Jupiter Autotuner upgrade?

[Rick - DJ0IP / NJ0IP]

Clayton,

Well you had an easy challenge:  make it work on one frequency.

I whole-heartedly agree with you in theory but it's not always practical.

In today's world, we are trying to cover up to 9 bands with one antenna.
There are some good remote tuners to do what you want to do, but most are
for low power and even then they cost a lot more than the tuners in the
shack.  I think MFJ recently came out with one that can handle high power,
but I haven't seen it yet and don't know how much it costs.

As long as we can keep the SWR down to about 3:1 on all bands, and use a
good quality, short run of coax between the antenna and the rig, I don't
think the built-in tuner is as bad of an idea as you portray it.  You lose
about 10% of your power in exchange for a good match presented to the rig.

If I lived on a farm without neighbors, I would have nothing but monoband
antennas, all with a perfect match at the antenna.  Gotta win the lottery
first before I can realize that.

73
Rick, DJ0IP



-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
On Behalf Of Clayton Brantley
Sent: Wednesday, November 30, 2011 2:57 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Jupiter Autotuner upgrade?

In going back to the broadcast days, we always put the tuner AT the antenna
and
had a "flat" line for the antenna to the transmitter.  Works better than a
line full
of VSWR in the shack.

In my view, internal tuners are to be avoided.  No exceptions.

Clayton N4EV



________________________________
 From: Richards <jruing at ameritech.net>
To: Discussion of Ten-Tec Equipment <tentec at contesting.com> 
Sent: Tuesday, November 29, 2011 11:05 PM
Subject: Re: [TenTec] Jupiter Autotuner upgrade?
 
Based on my experience with the built-in auto tuner on my Omni VII it 
will not usually outdo the external tuners, but I don't know what MFJ 
tuner you have... but most will be more robust than the TT tuner.

That's MY take...

==========================  K8JHR ===========================


On 11/29/2011 12:26 PM, John wrote:
> I am considering adding the autotuner to my Jupiter.  My normal antenna
> for now is a G5RV with plans for getting my R-7 Vertical back on the air
> ASAP.  Other than making me feel better, what is gained by adding the
> autotuner to the mix.  The G5RV gets quirky to tune on 80 and 40 using
> my MFJ tuner. Will a G5RV be within the tuning range of the TT autotuner
> with these bands and antenna?  Any experiences are appreciated.
>
> 73,
>
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