Odd Radio System Discovery

I Have been monitoring Hanover P25 System over past week and listing to King William, and I currently reside in King William and I use my BC436HP to listen and I have notice in week or so where I hear ONE sided stuff, is it like the TX and RX on different TG or frequency like tonight hear KWSO dispatch say they had kids hanging out somewhere and needed go check things out, I didn't hear dispatch say what unit they were calling I just heared the call , it like this sometimes but most often I hear everything, Just seeing if anyone else has notice this...

Odd Radio System Discovery