Amateur Extra › E4 Amateur Practices › E4D04
E4D04
Which of the following is used to reduce or eliminate intermodulation interference in a repeater caused by a nearby transmitter?
Pick an answer to check it.
Answer: B. A properly terminated circulator at the output of the repeater's transmitter
A properly terminated circulator lets the transmitter's signal go out to the antenna but sends incoming signals from other transmitters into a load. That keeps them out of the final amplifier where they would mix.
Tip: Circulator: one-way street for RF.