Tony,

Try doing the TX Gain Calibration on the K3S. You only need a dummy load that is flat (1:1 SWR) up through 6 meters along with K3 Utility.

73,
Don W3FPR

On 3/4/2020 1:48 AM, Tony wrote:
All:

I've noticed an unusual thing happen with my K3S and KPA500 amplifier while in SSB mode. When I increase the K3S drive beyond 12 watts, the KPA500 power drops-off dramatically. This only happens in SSB mode.

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