Within what distance must an amateur station protect an FCC monitoring facility from harmful interference?

The FCC strictly protects its monitoring facilities from local RF interference to ensure they can perform their regulatory and enforcement duties. According to FCC Part 97 rules, amateur stations located within 1 mile of an FCC monitoring facility must protect it from harmful interference. If an amateur causes interference within this 1-mile radius, they may be required to cease operation or modify their station to eliminate the problem. Distractors like 3, 10, or 30 miles are incorrect because the protection zone is specifically defined as a narrow 1-mile radius around the facility.