K251AU is an FM translator radio station that serves the Albuquerque, New Mexico area.

K251AU began broadcasting in January 2007 with programming from KBNM-LP (98.7 FM), a low-powered radio station based in Belen, New Mexico offering a non-commercial oldies music format.

At the time, the translator was running at just 10 watts, and often encountered interference problems with the full-powered KBAC out of Las Vegas, New Mexico.

On June 17, 2013 the upgraded signal went on the air stunting with a Christmas music format as "Santa 98.1".

On June 21, 2013, K251AU became the new home for the classic country format that had previously aired on KABQ-FM (104.7 FM) since May 2, 2009.