Call Signs


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Related to Call Signs: call letters, Military alphabet

Call Signs

 

special words, signs, or combinations of letters or numbers assigned to officials, command and control agencies, communication centers and stations, and other bodies so that they can be quickly identified in conversations through signal means and their actual designations kept secret. Conventional sound signals or melodies may also be used as call signs for radio transmitters. Call signs are assigned for the duration of a mission or for a definite period of time, after which they are changed.

References in periodicals archive ?
The source told that flight operation, push up record and call sign record if provided by the officer concerned would give proper insight about the real persons who played tainted role in destroying the national carries for their vested interests.
The other plane, going from Istanbul to Singapore, had the call sign 68 and it was flying at 37,000 feet," the official said.
A spokesman said the pilot gave the call sign he had been given and was approved for entry.
The Iranian diplomatic mission said that Merkel's pilot did not send the proper call sign and thus was not able to cross Iranian airspace.
Fields, a Navy officer and A-7A Corsair II pilot with the call sign Streetcar 304 from Attack Squadron 82, launched from the aircraft carrier USS America on his first combat mission.
Many lessons were learned: establish an ICS plan and develop a Standard Operating Procedure for execution; at the onset, establish a cell, such as an EOC, which serves as the decision maker; share communication equipment, call signs and frequencies; coordinate and communicate with all agencies and listen to the experts--then decide," said McClean, adding, "the most important accomplishment was that all agencies were brought together and successfully responded to a crisis.
A lesson learned from the Vietnam War was that the use of non-changing radio frequency assignments and call signs often resulted in the compromise of information because the enemy was able to find and exploit radio frequencies and the information they carried.
An early chapter that will bring a knowing smile is the choosing of call signs by the FRS instructors.
One by one, as their unit call signs were called, Sorensen's fellow deputies paid their respects in a sort of electronic memorial book that has become a department tradition.
The system uses a combination of surface movement radar, transponder multilateration and ADS-B sensors to display aircraft position, labelled with flight call signs, on air traffic control tower displays to improve airport safety and efficiency.
Between last August and mid-January, the bureau had sent 268,000 audit letters covering 420,000 call signs, including 56,000 letters covering 121,000 call signs of public safety licensees.
As of mid-January 268,000 audit letters covering 420,000 call signs had been sent.