KIRO (710 AM) is a Class A clear-channel radio station licensed to SEATTLE, WA. Operating with 50 kW daytime power using a directional (different day/night patterns) antenna system with 2 towers. At night it operates at 50 kW. After sunset, skywave propagation can extend the signal across much of North America. The station is owned by Bonneville International. It broadcasts a Sports radio format.