First off, I am NOT a pilot.
I live in Las Vegas, and I’m trying to interpret squawk codes.
1200 is used by many of the vegas tourist helicopters, and I am assuming that this means they are flying on visual.
411 is used by the LVMPD helicopter
squawks beginning with 54 seem to be issued by nellis AFB for aircraft flying onto the Nellis Test Range.
Is there a document I can read that will tell me what the other squawk codes refer to?