The FCC Office of Spectrum Management and Coordination Policy
The local chapter of the Office of National Council of Independent Frequency Coordinators
Amateur operators in a local or regional area whose stations are eligible to be repeater or auxiliary stations✓Bonne réponse
The FCC Regional Field Office
Explication
The coordinator's authority is conferred by recognition from the local amateurs whose stations are eligible to be repeaters or auxiliary stations, so the selection is bottom-up. No FCC office appoints or approves a frequency coordinator.