I am not too familiar with the SIRN system and this may be an easy fix, but I can't quite seem to figure it out. Anyhow, of all the sites I have added to my scanner it appears the only site that I can get a signal from is the Kenna tower in Jackson County. I consistently get 3-4 bars. Anyhow, I am only hearing traffic from some TG's and not all. I have noticed that the screen is only showing freq of 452.400 (most of the time). Does that mean it's only looking on that specific freq for traffic? I do seem to notice that I hear some other specific TG's like Charleston FD Disp when it shows 453.325. So, I guess my question is.. how do I get it to scan all the freq's for that site as I think it's only listening to one. I have went through the settings and all the freq's are there and nothing appears to be locked out. Are there any other setting that I need to run on/off? Thanks!