Joy 620 WRJZ is Knoxville’s most powerful Christian radio station, featuring inspirational, educational and informative talk programming 24 hours a day. Programming themes include: Faith…Marriage… Emotional Health… Money… Politics… and Relationships. Thanks to the station’s 5000 watt signal, Joy 620 covers the Tennessee Valley within a 60 mile radius of Knoxville. Our signal is also available via FM, at 102.5 in Knoxville and 99.5 in Sevier County.