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(See discussion on the D9K call sign issued by Korea above – 'when 2 characters are needed'.) PPNS, 2×1 call sign prefix can be letter-letter, letter-digit, or digit-letter. A call sign composed of a letter, two digits, and one-letter is always a 2×1 call sign, meaning it has a letter-digit prefix and a single-letter suffix.
Map showing the numeral codes for amateur radio call signs in the United States. The region in which the operator was licensed determines the numeral. United States amateur radio call signs consist of one or two letters, followed by a single digit, and closing with one to three more letters. [20]
Fire: 10-70 Net message (State net traffic). Fire, phone alarm Fire alarm Fire 10-71 Proceed with traffic in sequence (busy here). Box alarm Advise nature of fire (size, type, and contents of building) — 10-72 — Second alarm Report progress on fire 10-73 Third alarm Smoke report 10-74 Fourth alarm Negative Negative 10-75 Fifth alarm
Broadcast call signs are call signs assigned as unique identifiers to radio stations and television stations. While broadcast radio stations will often brand themselves with plain-text names, identities such as " cool FM ", " rock 105" or "the ABC network" are not globally unique.
Police units in the United States tend to use a tactical designator (or tactical callsign) consisting of a letter of the police radio alphabet followed by one or two numbers. For example, "Mary One" might identify the head of a city's homicide division. Police and fire department radio systems are assigned official callsigns, however. Examples ...
Los Angeles Fire Chief Kristin Crowley was the subject of a blistering five-page letter from current and retired LAFD Bravest demanding she step aside immediately after failing to properly manage ...
Two people were hospitalized with serious injuries after their small plane crashed near Interstate 25 in Colorado on Sunday, officials said. The plane crashed in a field just off I-25 near ...
Radio call signs are a globally unique identifier assigned to all stations that are required to obtain a license in order to emit RF energy. The identifiers consist of from 3 to 9 letters and digits, and while the basic format of the call signs are specified by the ITU-R Radio Regulations, Article 19, Identification of stations, [5] the details are left up to each country's radio licensing ...