WRDZ (1300 AM) is a Class B regional radio station licensed to LA GRANGE, IL. Operating with 4 kW daytime power using a directional (different day/night patterns) antenna system with 6 towers. At night it operates at 4 kW. After sunset, skywave propagation can extend the signal across much of the surrounding region. The station is owned by Walter Kotaba. It broadcasts a Polish format.