I have programmed my scanner using Radio reference. It sucessfully downloads the data, shows the scan lists, and the name of the agency. but the "T" trunk system never come on and although the signal indicator shows that I am receiving no sound is coming from the scanner and it never locks on a frequency. Across the top of the display it is showing G global, S signal, and that is all. What am I doing wrong? I live in Bibb Co, GA.