Brian,
Does that happen with SSB, or any mode?
If SSB only, I suggest that you 'train' you KAT500 on the antenna, and
then put it into MAN mode.
The new firmware should have made the occurrences of false SWR detection
less frequent, but the varying pattern of SSB creates situations where
when the forward power is sampled, the speech power is low, and when the
reverse power is sampled, the speech power is high - when then computed
for SWR, that will result in a higher than actual SWR - in Auto mode,
the KAT500 will then begin a TUNE cycle.
Since the tuner 'training' is done with a constant signal level, it will
be correct (for that antenna and band segment), so taking it out of AUTO
mode will keep those LC settings constant and it should not re-tune.
If you are having that problem in CW or DATA modes, contact support for
further assistance.
73,
Don W3FPR
On 6/10/2014 9:38 PM, Brian F. Wruble wrote:
> Hi All:
>
> I had been having a sporadic re-tuning problem on one of my two 80m dipoles
> using the previous firmware version. I had understood that the new version
> 1.67 was supposed to take care of that. It seems to have made everything
> much worse.
>
> On pretty much all bands, using a variety of antennas, the KAT500 seems to
> start re-tuning after everything was perfectly well tuned. It happens in
> the middle of transmissions.
>
> Any idea what is going on here?
>
>
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