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The meaning of CALL SIGN is the combination of identifying letters, letters and numbers, or words assigned to an operator, office, activity, vehicle, or station for use in communication (as in the address of a message sent by radio).
In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station.
Military call signs are essential for successful communication and operations. They are unique identifiers assigned to individuals and units to facilitate mission communication and coordination. Military call signs have a long history and have evolved to become an integral part.
Call signs in the United States are identifiers assigned to radio and television stations, which are issued by the Federal Communications Commission (FCC) and, in the case of most government stations, the National Telecommunications and Information Administration (NTIA).
A call sign is the letters and numbers which identify a person, vehicle, or organization that is broadcasting on the radio or sending messages by radio. Other documents recorded flight call signs and frequencies. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers. Collins English Dictionary.
Call Sign definition: The letters or, often, numbers and letters assigned to a licensed broadcasting station, amateur radio operator, etc. as identification, as for sending messages.
A ham radio call sign is a unique identifier that is assigned to an amateur radio operator. It is used to identify the operator and their location, and is typically a combination of letters and numbers. For example, a common format for a ham radio call sign is a combination of two letters, followed by a number and a suffix.