[Icom] IC-746 built-in Antenna Tuner problems

Tue, 17 Sep 2002 11:00:20 -0400

I forgot to mention that detail too (Sorry).  It does the same thing at all
power levels as well.  Thanks
----- Original Message -----
From: "Roy Sakabu" <[email protected]>
To: "'WB8FEQ at Home '" <[email protected]>
Sent: Tuesday, September 17, 2002 10:31 AM
Subject: RE: [Icom] IC-746 built-in Antenna Tuner problems


> Hello Al,
>      Have you tried auto tunig at different power levels?  Sometimes it
will
> tune better at a medium-low level and at other times at medium-high
levels.
>
> Good luck
> Roy
> AD6ZU
>
> -----Original Message-----
> From: WB8FEQ at Home
> To: [email protected]
> Sent: 9/17/02 6:43 AM
> Subject: [Icom] IC-746 built-in Antenna Tuner problems
>
> Hi all.
>
> My IC-746 has been working great for over 3 years but over the last
> couple
> of weeks I noticed that the antenna tuner is not locking in propperly.
> At
> first I thought it was on all bands but further investigation I find it
> is
> primarily on ten meters.  I even connected a good 50 ohm dummy load with
> three different jumpers.  It can never find a good match (thought the on
> screen SWR readings do go through a good SWR and back to infinity.  With
> the
> tuner out of line the dummy load shows a 1.1:1 reading.  The other bands
> I
> normally opearte on (75, 40, 20 and 6 meters) seems to be funtioning
> correctly with their respective antennas.  I was wondering if anyone has
> encountered this before and if there is any known "normal" that would be
> seen as the cause of this.   Aany other thoughts/suggestions before I
> give
> up and send it to a service center (which based on the current size of
> components and my less than perfect eyes may happen even if I find a
> defective component) would be appriciated.
>
> Thanks in advance - Al WB8FEQ
>
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