Hi, new here, got a question that I'm sure seems pretty basic to most users but I can't quite wrap my head around it from just reading the manual. I'm wondering what is the difference between channels, banks, scan lists, bands, etc. I have a Uniden BC245XLT. It has 10 banks, 30 channels per bank, 12 bands, but I don't understand what all this is. I should mention that the person I bought it form already had the trunking system (Waterloo Region) programmed into it so all I have to do is turn it on and it works but I'd like to understand more about how it's all set up because there's alot of other stuff in there that I don't want. Thanks.