KPWK (1350 AM) is a Class B regional radio station licensed to SAN BERNARDINO, CA. Operating with 5 kW daytime power using a directional (different day/night patterns) antenna system with 2 towers. At night it operates at 500 watts. After sunset, skywave propagation can extend the signal across much of the surrounding region. The station is owned by iHeartMedia, Inc. It broadcasts a Sports radio format.