Some basic EMD SD70M questions

I am missing some basic knowledge of the EMD SD70M locomotive.
I tried to find a EMD SD70M manual in my TS2017 directories (searched for all pdf), but did not succeed.
- How do I increase the radio / cb volume ?
- Where can I read up on the loco brake system. I would like to understand why the lowest setting is 20%
- Is this a stock TS2017 engine, or is it an add-on ?


I tried to find a EMD SD70M manual in my TS2017 directories (searched for all pdf), but did not succeed.
- How do I increase the radio / cb volume ?
- Where can I read up on the loco brake system. I would like to understand why the lowest setting is 20%
- Is this a stock TS2017 engine, or is it an add-on ?

