KQNT's first license, with the randomly assigned call letters KHQ, was issued to Louis Wasmer in Seattle on February 28, 1922, for operation on the 360 meter "entertainment" wavelength. Wasmer was a former United Wireless Telegraph Company radiotelegraph operator, who had opened the Excelsior Motorcycle and Bicycle Co. in 1911, and also sold radio equipment. Following two weeks of transmitter adjustment, the station made its debut broadcast on February 27, 1922. Its initial schedule was phonograph music presented every evening between 7 and 8:30. KHQ was the second Seattle station licensed following the formal establishment of a broadcasting service category on December 1, 1921 by the U.S. Department of Commerce, the regulators of radio at this time. The first Seattle station licensed under these new regulations was KFC on December 8, 1921, which was operated jointly by the Northern Radio and Electric Company and the Post-Intelligencer newspaper. A third Seattle station, Vincent I. Kraft's KJR didn't receive a broadcasting station license until March 9, 1922. However Kraft had begun broadcasting over an experimental station beginning in 1920, thus, when KHQ debuted it was described by a local newspaper as "the third broadcaster". In March KHQ suspended operations for nearly two weeks, returning with a 50-watt transmitter that replaced the original 10-watt set, which had been sold to the Economy Market so it could establish station KZC. Because initially there was only the single entertainment wavelength of 360 meters available for use by multiple stations, regions had to set up a timesharing agreement to allocate individual station timeslots. On November 28, 1922 KHQ had the fewest programs of four listed stations, with a schedule of 7:00 to 8:00 p.m. on Tuesdays, Wednesdays and Saturdays. In January 1925, KHQ began broadcasting from a studio located at the Bush & Lane Piano Company store on Third Avenue, and the station also moved to 1100 kHz.
Spokane
In May 1925 it was announced that KHQ was temporarily going off the air in order to give Bush & Lane time to "make extensive alterations in the studio", in addition to a major facility upgrade. Instead, after broadcasting for three years in Seattle, Wasmer relocated the station to Spokane, reportedly transporting the radio equipment in a motorcycle sidecar. KHQ was Spokane's fifth radio station, preceded by stations KFZ, KOE, KFIO and KFPY, although only KFIO and KFPY were still licensed at the time of KHQ's arrival. Part of the move included an upgrade from 100 to 1,000 watts, although the station remained on 1100 kHz. KHQ's Spokane debut on October 30, 1925, from the Davenport Hotel, was made with great fanfare. Announcer Frank "Spark Plug" Buhlert told listeners that "The first 500 persons who send telegrams or phone in that they have heard the program will receive a souvenir bag of ore from the world's largest lead mine, the Bunker Hill & Sullivan, at Kellogg, Idaho." The debut broadcast ran from 8 p.m. to midnight, and included assorted speeches and music. Wasmer moved the station's studios and office across Post Street from the Davenport Hotel to the seventh floor of Spokane Stock Exchange Building in 1928 because the fledgling station had outgrown its quarters in the hotel. KGA later joined KHQ in the building, which was subsequently renamed the Radio Central Building. KHQ changed its transmitting frequency a number of times in the mid-twenties, until November 11, 1928, when, under the provisions of a major reallocation resulting from the Federal Radio Commission's General Order 40, it was reassigned to 590 kHz which it and its successors have used ever since. The August 1941 adoption of the Federal Communications Commission's "duopoly" rule restricted licensees from operating more than one radio station in a given market. At this time Louis Wasmer, Inc. owned two Spokane stations: KHQ and KGA. To conform with the FCC order, in 1946 Wasmer sold KHQ to the Cowles Publishing Company, publisher of The Spokesman-Review newspaper, which used it to launch an FM station and a television station. KHQ stayed in the Radio Central Building until 1960, when it moved to a modern facility next to its transmitter site on South Regal on the Moran Prairie.
KLSN
Cowles sold off its radio interests in 1984; on New Year's Day 1985, and kept the historic KHQ call letters for its TV station. Because of a FCC rule in place at the time that prohibited TV and radio stations in the same market but with different ownership from sharing the same call letters, AM 590 changed its call to KLSN, with the slogan "Listen 5-90".
KAQQ
On December 1, 1986 the station changed its call sign to KAQQ, which was phonetically similar to the original KHQ call letters.
KQNT
On New Year's Day 2002 the call letters became KQNT.
