6A417 D
The plate current of the final RF amplifier in a transmitter increases and radiation decreases, if the antenna circuit is in good order, what could be the cause?
A.Neutralization may have been upset
B.The plate circuit may have been detuned, bias may have been lost
C.Grid excitation may have decreased, there may be a faulty tube, or there may be parasitic oscillations
D.All of the above
