Ground-to-Air Transmitter Facilities (GAT Facility) were USAF surface-to-air missile radio uplink stations. They were located near CIM-10 Bomarc bases (e.g., Suffolk County Missile Annex on Long Island) for command guidance of the Interceptor Missiles. The unmanned sites with a transmitter building and 2 antenna towers converted the digital "midcourse guidance commands" (after the launch/climb and before the homing dive) received from an AN/FSQ-7 Combat Direction Central into the transmitter building's , processing 28 channels of uplink data.