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|Branding||News Talk K57|
|Slogan||The Hottest Talk On Guam|
|First air date||February 1975 (as KATB) |
November 1981 (as KGUM)
|Power||10,000 watts (unlimited)|
|Former callsigns||KATB (1975-1981)|
|Affiliations||CBS Radio News|
|Owner||Sorensen Pacific Broadcasting, Inc.|
|Sister stations||KGUM-FM, KZGU, KZGZ|
Owned by Sorensen Media Group, it broadcasts a news/talk format branded as News Talk K57. Although KGUM broadcasts at 567 kHz, most U.S. radios tune in 10 kHz increments only; the station has thus marketed itself as being on the next nearest frequency, 570. Stations in Guam fall within the jurisdiction of the Geneva Frequency Plan of 1975, instead of the North American Regional Broadcasting Agreement used in the U.S. mainland.
KATB went on the air in February 1975. It was owned by Magof, Inc., a company of A. T. Bordallo. Bordallo died in 1977, and the station was transferred to his estate. K-57 Radio bought the station in 1981, relaunching it as K57 Radio with the new callsign of KGUM. Four years later, KGUM began using the name News Talk K57.
In 1992, KGUM began broadcasting with 10,000 watts.
A storm knocked down KGUM's tower in January 2016, requiring the station to broadcast under special temporary authority with 5,000 watts.
K57 carries CBS News Radio every hour around the clock and provides hourly local news updates from Sorensen's Pacific News Center (PNC) during local programming. PNC's nightly TV newscast at 6 pm is simulcast on K57.
K57's weekday daytime and Saturday morning hours are dedicated to locally produced talk shows, while nationally syndicated programs play overnight, Saturday afternoons and Sunday. K57's only music program is the weekly "Juke Box Saturday Night" (6 pm to midnight).