I've had this CB radio in my garage for about fifteen years, and know nothing about it (or CB in general). Now that I have an Explorer, I'm wanting to add this CB, assuming it works. So, is this a good model? reliable or problematic? etc..... I understand the volume, squelch, and channel controls, but what are the ANL (on/off) and DELTA (+/0/-)? (As I said, I have no experience with CBs, except what I have been reading here). It has a little signal power meter on the front; how is that used? Also, on the back, it has an external speaker connector and a PA speaker connector. How do they differ? only in that the external connector disconnects the internal speaker and the PA runs in conjunction with? or ...? And, anyone know what year(s) this was actually made? Tomorrow I'll start cleaning it up and see if it works. Thanks for all the help!