9-18B3 B
Which of the following conditions could cause very low RF output in a MF/HF transmitter operating in the F1B FEC mode?
A. Failure of a voltage controlled oscillator in the IF amplifier stage.
B. A high Standing Wave Ratio (SWR) in the antenna system.
C. The connection of a transceiver is connected to a "Dummy Load" antenna.
D. Failure of a SSB bandpass filter in the stage preceding the RF amplifier.
