Steve,
A good start would be to redo the K3 TX GAIN CALIBRATION. Do not use
the Utility, do it manually. This problem can occur as a result of
varying drive from the K3, typically from previously transmitting at
either 5 or 50 watts. Using your dummy load, set the K3 PWR to 5w. In
CONFIG: TUN PWR set the value to 5 watts. Then hold TUNE on the K3 to
see a display of 5w. Tap TUNE. Repeat the procedure at 50w. Reset
CONFIG: TUN PWR to any value EXCEPT 5 or 50w. With the KPA1500 in OPER
set the PWR control on the K3 to your usual drive level. Hopefully this
will fix the problem. 73, Jim W6YA
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