WKHB is an AM radio station licensed to Irwin, Pennsylvania, United States, which serves the greater Pittsburgh area. Known as 620 KHB, the station operates with 5,500 watts daytime (reduced power at night) and airs a mix of health talk and paid programming with oldies music in the morning, evening and overnight hours. It is also known for its weekend polka shows and ministries that broadcast on KHB.
WKHB's high power on a low frequency yields what is generally considered to be the second-best daytime AM signal in the Pittsburgh area (behind KDKA), covering nearly two and a half million people (2.0mV/m) in various portions of five states. WKHB also simulcasts on FM translators 94.1 W231BM and 92.3 W222CB.
WKHB and its sister stations 770 WKFB, 103.1 WKVE are owned by Broadcast Communications Inc., which also owns and operates WANB, Waynesburg, PA, which simulcast 1210 AM and 105.1 FM.
620 began as WHJB, formerly licensed Greensburg. The station began as a daytime-only operation, operating at a power of 250 watts, non-directional.