A few years ago I heard what I believed to be Jones or Durham buses (both owned by the same company?) using a repeater on 153.4925(D116?). This was called either "Channel A" or "Channel 8". Mentioned were yards in Antioch, Grayslake, Lake Villa, Arlington Heights and Warrenville. You might also try listening to all of the freqs covered by this license
ULS License - Industrial/Business Pool, Trunked License - WPNZ850 - VENTRONICS INC .
I hope this might help.....