i have the same radio. i keep mine turned down. no way in hell is this capable of 300 watts. just not possible. your going to fry the mosfets out.
Could you tell me where the diode goes for the modification, numbering of the diode and where is it placed? Thank you.
That bearcat dude has not logged into the forum since August of 2012, I doubt he will reply. It's good for you though, this way you don't screw your nice radio up.