I have searched far and wide for information on this radio, and you all are my last resort.

All I need to know is what the two little buttons do that are above the PTT, thats it. If this is a common setup on HT's then please give it your best shot, I'm stumped

I think they are programmable, been awhile since I've used my GP300. There's a website called Batlabs that might be able to help. Can't remember the URL, google it.