I agree with the general proposition it is better to adjust/tune at the
feed point, but I also believe one might clean up a relatively small
mismatch using the internal tuner.
For example, I have a nice Off Center Fed (OCF) dipole that has
wonderfully low SWR (i.e., below 1.4 : 1) on three bands, but is about
2.5 : 1 on 10 meters. The internal tuner cleans that up nicely. It
would not be cost effective to put an external tuner out on my 50 foot
mast just to clean up this little bit of mismatch on one band.
While this does not belie the general rule, it is one scenario under
which using the internal tuner makes sense.
Just MY take.
=========================== K8JHR ========================
On 11/30/2011 8:57 AM, Clayton Brantley wrote:
> 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@ameritech.net>
> To: Discussion of Ten-Tec Equipment<tentec@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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