Licensed to Fisher, Minnesota, KSNR first began broadcasting in 1976 under the call sign KOSN in Thief River Falls.

In 2005, KSNR changed its city of license from Thief River Falls to Fisher, which would allow it to move its transmitter tower closer to Grand Forks in the future.

The previous local morning show was moved to sister station KQHT "96.1 The Fox", which carries an updated classic hits version of the former "Kool 100.3" oldies format.

On October 29, 2018, it was announced that, as iHeartMedia would lose its grandfathered ownership limits in the Brunswick and Grand Forks markets as part of its bankruptcy restructuring, the company would place KSNR and WHFX into the newly formed Sun & Snow Station Trust, under the oversight of former Backyard Broadcasting CEO Barry Drake, as preparation for an eventual sale of the signals.

[2] On December 23, 2020, iHeart filed to reclaim KSNR from the Sun & Snow Station Trust;[3] the re-assignment of the license was consummated on March 29, 2021.