E4D04 — Amateur Extra Class

E4D04 : Which of the following is used to reduce or eliminate intermodulation interference in a repeater caused by a nearby transmitter?
A A band-pass filter in the feed line between the transmitter and receiver
B A properly terminated circulator at the output of the repeaters transmitter
C Utilizing a Class C final amplifier
D Utilizing a Class D final amplifier
Correct Answer: A properly terminated circulator at the output of the repeaters transmitter