What is UNICOM?

1. 1A government radio station that gives ATC clearances at towered airports
2. 2A recorded weather broadcast at airports with a control tower
3. 3A radar service for VFR aircraft near Class B airspace
4. 4A nongovernment air/ground station that may give airport information

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 4-1-9 Traffic Advisory Practices at Airports Without Operating Control Towers, page 208