Prelude. Radio is a Connex CX3400HP that has been converted to CB. Antenna is a 3ft Firestick..

It has a "AM/FM" switch..I am assumning that since converted that "AM" is where it needs to be and "FM" is useless? If not what's the difference?

There is a button toward the right top that is a "band" button..It appears to have a -d. Since conversion what does this button do if anything?

While driving down the road should I keep the TB and PWR knobs maxxed out far right? I am assuming this is the "helper" for signal strength for transmit and receive.

Thanks in advance for your time to reply.