When I first turn on my K2/100 the KAT100-1 works fine. After it has been on
for a while, the KAT100-1 refuses to retune to a new frequency at opposite ends
of the band on 80 or 40 meters (for example). There are no relay clicks and
the SWR LEDs light up showing an out of resonance condition on the band being
retuned. The KAT100 memory works fine when scrolling through all the other
bands where resonance was previously set.
During this condition I went to the ATU menu and tried to edit AUTO. Turning
the VFO knob would display PA ANT 1 only and then go back to AUTO. Tapping
ANT 1/2 shows NOT INST. Also during this condition TUNE will not automatically
go back to receive until TUNE is pushed again.
It seems to me I may have a microprocessor problem in the KAT100-1. KAT MCU
1.05 is installed. When it works, it works well on all bands including 60
meters. I have checked for solder traces and resoldered all connections in the
KAT100-1. The K2/100 works fine into a manual antenna tuner. Any suggestions
would be appreciated. Thanks Roy Morris W4WFB
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