KMAX (840 kHz) is a commercial AM radio station broadcasting a talk radio format. Licensed to Colfax, Washington, the station serves the Pullman - Moscow - South Eastern Washington region and is owned by Inland Northwest Broadcasting, LLC. By day, KMAX is powered at 10,000 watts and broadcasts a non-directional signal. But 840 AM is a United States clear-channel frequency reserved for Class A WHAS in Louisville, Kentucky. So KMAX must reduce nighttime power to only 280 watts to protect the skywave signal of WHAS. The transmitter is off Hilty Road in Colfax.