[Amps] Power output drop

[Mike Waters]

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Anyone have an idea why the power output of my dual parallel 833C 160m amp
often drops 200+ watts after several seconds? Re-tuning does not bring it
back up to the initial output.

Not that a drop from 1500 to 1300 watts is a big deal, but inquiring minds
want to know the reason. :-)

Description:
www.w0btu.com/833C_linear_amplifier.html

More photos:
w0btu.com/files/misc/833C_linear_amplifier/?C=M;O=D

73, Mike
www.w0btu.com