WAOB (860 kHz) is an AM radio station licensed to Millvale, Pennsylvania and serving Greater Pittsburgh. It is owned by St. Joseph Ministries and carries a Catholic talk and teaching radio format. Some shows are locally produced in cooperation with the Diocese of Pittsburgh and some are from EWTN Radio. The studios and offices are on Ligonier Street in Latrobe, Pennsylvania. For 50 years, the station had served Pittsburgh's African-American community as WAMO (now on AM 660).

By day, WAOB transmits with 1,000 watts, but because 860 AM is a clear channel frequency reserved for CJBC Toronto, WAOB must reduce power at night to 830 watts to avoid interference. It uses a directional antenna at all times. Programming is simulcast on 106.7 WAOB-FM in Beaver Falls, Pennsylvania, and WPGR 1510 AM in Monroeville, Pennsylvania.