Broadcast areaAmarillo metropolitan area
Frequency1550 kHz
First air date
May 8, 1962; 61 years ago (1962-05-08)
Last air date
March 1, 2020; 3 years ago (2020-03-01)
Former call signs
KVPH (1962–63)
KCAN (1963–77)
KHBJ (1977–86)
KAKS (1986–95)
KZRK (1995–2002)
KAYD (2002)
KZRK (2002–13)
KNSH (2013–20)
KLSZ (February 20–March 1, 2020)
Technical information
Facility ID39591
Power1,000 watts (daytime)
219 watts (nighttime)
Transmitter coordinates
34°58′54″N 101°57′18″W / 34.98167°N 101.95500°W / 34.98167; -101.95500

KNSH (1550 AM) was a radio station serving the Amarillo, Texas, area. This station broadcast on AM frequency 1550 kHz and was under ownership of Cumulus Media. Its studios were located at the Amarillo Building downtown on Polk Street, and its transmitter tower was based in Canyon, where the station is licensed to serve.


In January 2008, it began airing hot talk John Clay Wolfe and the daily nooner weekdays at 12 from ESPN affiliate KSEY from Vernon, Texas.

KZRK was airing a news/talk format before the format change in 2007, then carrying Spanish sports before going silent in September 2012. They came back on the air in October 2012 with a simulcast of sports-formatted KPUR 1440 AM Amarillo, Texas.

On January 3, 2012, KZRK changed their format to talk, branded as "Talk 1550".

On December 31, 2013, KZRK changed their call letters to KNSH.

The facility had experienced issues with its antenna tuning unit since 2018, resulting in prolonged periods of silence. On February 20, 2020, KNSH swapped callsigns with KLSZ-FM, a Nash FM country station in Fort Smith, Arkansas. Cumulus then surrendered the license for newly-recalled KLSZ to the FCC on February 25,[1] and the FCC cancelled the license on February 27.