Amateur Extra › E4 Amateur Practices › E4D03
E4D03
What creates intermodulation interference between two repeaters in close proximity?
Pick an answer to check it.
Answer: B. The output signals mix in the final amplifier of one or both transmitters
When two repeater transmitters are close together, each one's signal can enter the other's final amplifier. The signals mix there and produce intermodulation products on new frequencies.
Tip: Signals mix in the final amplifier.