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...

Aviation call signs or aircraft call signs are communication call signs assigned as unique identifiers referring to an aircraft. Call signs in aviation...

aviator call sign or aviator callsign is a call sign given to a military pilot, flight officer, and even some enlisted aviators. The call sign is a specialized...

Military call signs are call signs (or callsigns) or specialized form of nickname assigned as unique identifiers to military communications. In wartime...

call signs are call signs assigned as unique identifiers to ships and boats. All radio transmissions must be individually identified by the call sign...

call sign to always be used and others allowing the operator call sign instead. The International Telecommunication Union (ITU) allocates call sign prefixes...

Call signs in the United States are identifiers assigned to radio and television stations, which are issued by the Federal Communications Commission (FCC)...

Call Sign Extortion 17: The Shoot-Down of SEAL Team Six is a 2015 non-fiction expose, written by best-selling author and former U.S. Navy JAG Officer...

continue to identify by call signs worldwide. Each country has a different set of patterns for its own call signs. Call signs are allocated to ham radio...

Spacecraft call signs are radio call signs used for communication in crewed spaceflight. These are not formalized or regulated to the same degree as other...