Richard, I'm glad you found the BS170 problem.? They probably sent you the wrong type of transistor, since all BS170s in those type of packages have the same pinout.?
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I think the peak-to-peak voltage measurements that you made on the bands with high power (over 6W) probably have some measurement problem, since I don't think those voltages are possible with this design.? If they are real measurements, something is definitely very wrong.
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Please post the power numbers reported on the Diagnostic screen, so we can compare them to the ones you are computing from the Vpp measurements.
Stan