[ICOM] SWR tuning issue with IC-706MkIIG

Gary P. Fiber gfiber at comcast.net
Fri Jan 7 00:15:33 EST 2011


Without having a look at the schematic and hazarding a guess I would say 
may one of the diodes in the swr circuit is in trouble.
Are you using an external meter to monitor the SWR when the Turbo Tuner 
is running the antenna?

Gary K8IZ

On 1/6/2011 7:28 PM, Michael G. Carper wrote:
> I've got a relatively old, but well cared for IC-706MkIIG.  It's in my truck
> (www.wa9pie.net/hamradio).  I'm using a N2VZ Turbo Tuner and a Tarheel Model
> 100A antenna.  This setup works really well.  However.
>
>
>
> I occasionally have an issue where the following happens:
>
>
>
> .         I've changed frequency where tuning the antenna is needed
>
> .         I hit the tune button and the N2VZ auto-tuner begins working to
> move the antenna
>
> .         Normally, at this point, I'd see the SWR indicator start from an
> infinite SWR to something approaching 1:1.  However, the problem is.
>
> .         The rig constantly reads an SWR of 1:1 as the auto-tuner moves the
> antenna and eventually stops (may or may not be in-tune).
>
>
>
> It's rather frustrating.  I did a CPU reset on the rig. no difference.
>
>
>
> Thoughts?
>
>
>
> Mike, WA9PIE
>
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-- 
Gary Fiber K8IZ
GROL PG-19-6691 with shipboard radar endorsement
Washington State resident



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