Many thanks to all of those who responded to my message and shared their
experiences and thoughts: Dave WO2X, Mike VA3MW, Bob K4TAX, Jim K9YC, Victor
4X6GP, and Alan N1AL. With a dummy antenna (Cantenna) on 7MHz, and a 1.1:1
match, using 10w drive the KPA-1500 puts out 605w at first, then settles
d
My KPA-1500 switches from operate to standby due to reflected power more
than 200w whenever drive power exceeds about 8 watts on 7 MHz. The forward
power at that point is about 400w. The antenna is a double bazooka that
shows an SWR of about 1.2 on a RigExpert AA-230Pro antenna analyzer. A
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