Thomas Wells | Buy at photos.djournal.comMary Chapel Whitehead (left) and Briana Neely spin records as DJs Jammin’ Jan and Jivin’ Judy for the fictional KYDZ radio in Tupelo Community Theatre’s youth production of “On the Radio,” this weekend at TCT Off Broadway. By W. Derek Russell Daily Journal TUPELO – If you’re looking to take a step into the past this weekend, Tupelo Community Theatre’s Off Broadway location is your time machine. “On the Radio,” a TCT youth production, aims to teach kids about radio, history and music. “It’s telling the history of music through radio,” said director Dianne Ludt.