G4A08 — General Class

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G4A08 : What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?
A Minimum SWR on the antenna
B Minimum plate current without exceeding maximum allowable grid current
C Highest plate voltage while minimizing grid current
D Desired power output without exceeding maximum allowable plate current
Correct Answer: Desired power output without exceeding maximum allowable plate current