E1B04

What must the control operator of a repeater operating in the 70-centimeter band do if a radiolocation system experiences interference from that repeater?

1. AReduce the repeater antenna HAAT (Height Above Average Terrain)
2. BFile an FAA NOTAM (Notice to Air Missions) with the repeater system's ERP, call sign, and six-character grid locator
3. CCease operation or make changes to the repeater that mitigate the interference
4. DAll these choices are correct

Pick an answer to check it.