KMJ (580 AM) is a Class B regional radio station licensed to FRESNO, CA. Operating with 50 kW daytime power using a directional (different day/night patterns) antenna system with 4 towers. At night it operates at 50 kW. After sunset, skywave propagation can extend the signal across much of the surrounding region. The station is owned by Cumulus Media Inc. It broadcasts a Talk radio format.