9-7A5 B
 What condition may indicate voltage controlled oscillator failure in the synthesizer of a VHF transmitter?  
A.  Low transmitter power output in the high power mode.
B.  An out-of-lock condition in the Phased Locked-Loop circuit.
C.  Excessive deviation in the frequency modulated output signal.
D.  A constant transmitter power output at various modulation levels.
