What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?
Minimum SWR on the antenna
Minimum plate current without exceeding maximum allowable grid current
Highest plate voltage while minimizing grid current
Desired power output without exceeding maximum allowable plate current✓الإجابة الصحيحة
الشرح
The LOAD or COUPLING control sets how tightly the tank circuit is coupled to the load, which determines how much power the tube delivers and how hard it works. It is adjusted, alternating with TUNE, for the wanted output power while keeping plate current within the tube's rating.