An assigned band of frequencies sufficient for radio communication.
Note 1: The bandwidth of a radio channel depends upon the type of transmission and the frequency tolerance.
Note 2: A channel is usually assigned for a specified radio service to be provided by a specified transmitter.

An encryption treatment applied to signaling or user data, which treatment is intended to prevent an unauthorized detector of the data from extracting information. [T
1. Rpt34-1994]

A telecommunications common carrier that provides radio communications services but is not engaged in the business of providing landline local exchange telephone service. [47CFR]

The remote control of an apparatus by signals conveyed by electromagnetic waves.
Note: Radio control may be used to control the movement of an aircraft, vehicle, missile, or other mobile unit, either manned or unmanned, from a radio station on the ground or in another mobile unit. [From Weik '89]

The detection of the presence of an object by radiolocation without precise determination of its position. [JP 1-02]

See radar.

A radiodetermination station using radio direction-finding. [NTIA] [RR]

Radiodetermination using the reception of radio waves for the purpose of determining the direction of a station or object. [NTIA] [RR]

As defined in Federal Information Management Regulations, any equipment or interconnected system or subsystem of equipment (both transmission and reception) that is used to communicate over a distance by modulating and radiating electromagnetic waves in space without artificial guide. This does not include such items as microwave, satellite, or cellular telephone equipment.

The bearer/signaling connection between the radio port intermediary and the radio port controller. [T
1. Rpt34-1994]