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TV and DT: Commercial television was introduced in the United States in July 1941, and initially TV stations were assigned standard unique four-letter call signs. In August 1946 the "-TV" suffix was introduced, [ 11 ] which, like "-FM", included the restriction that paired stations had to have the same owners and be in the same community.
This is a list of full-power television stations in the United States having call signs which begin with the letter K. Stations licensed to transmit under low-power specifications—ex., KAJN-CD, K35OY-D and KXJB-LD—have not been included.
The last new three-letter call was assigned to station WIS (now WVOC) in Columbia, South Carolina on January 23, 1930. Since then, three-letter calls have only been assigned to stations, including FM (beginning in 1943) [1] and TV (beginning in 1946), [2] which are historically related to an AM station that was originally issued that call sign.
In South America call signs have been a traditional way of identifying radio and TV stations. Some stations still broadcast their call signs a few times a day, but this practice is becoming very rare. Argentinian broadcast call signs consist of two or three letters followed by multiple numbers, the second and third letters indicating region.
The pages below contain lists of television stations in the U.S. by call sign. Historically, stations to the east of the Mississippi River were given call signs beginning with the letter W, stations to the west K. However, there are exceptions. See the article on North American call signs for more information.
Call signs are allocated to ham radio stations in Barbados, Canada, Mexico and the United States. Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The call sign format for radio and television call signs follows a number of conventions.
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Broadcast call signs are normally four or five alpha characters in length, plus the -FM, -TV, or -TDT suffix where applicable. In South America call signs have been a traditional way of identifying radio and TV stations. Some stations still broadcast their call signs a few times a day, but this practice is becoming very rare.