Anything wrong with it the way it came, stock?
I personally dont know of any mods that can be done to that radio without opening the case.
Welcome to the board!!
The 2200 has a RF squelch as well as a regular squelch,it overrides the regular squelch from a sub menu that is 2 or 3 layers deep in one of the main menus..The RF squelch acts kind of like a RF gain,the higher you turn up the squelch the more it cuts back the signal.
I have a 2200 H as well and mine has the RF squelch turned on and I cant for the life of me figure out how to shut it off.
I know it is in the book for that radio so that would be a good place to start at
There are other places to find that info you want; why did you choose this forum?