I'm looking at the instruction manual of my Airtronics MX-3S and I'm wondering if someone can explain to me what these settings will affect:

1) Sub Trim

2) Arc

3) End Point Adjustment

4) Steering Dual Rate

Wow..the instructions for that radio (online at least) are really bad.. give the M11 manual a look, for each section it has a quick 1 or 2 lines talking about the functions, like dual rate, EPA, etc.. it should answer most of your questions - the functions are the same across all radios (for the most part) of course each will adjust them differently and what not..

Link: http://www.airtronics.net/manual/M11Manual.pdf

Thanks nsane. The M11 manual explained it pretty well. The MX-3S manual is atrocious compared to it. All it states is "press this to go into this function" with no explanation of what that function is. I guess it's like most electronics manuals, it just patronizes its audience and gives no hint of what the functions are...