I live in the YK Delta and have flown on both of these airlines countless times.  Ravn planes all have the little color screen that shows all of the different planes on a map along with their alphanumeric identifier so you can tell when someone else is getting close, and who they are.  The vast majority of the commercial planes here have that system.  I usually fly on Renfro's 207 and 172, and haven't been in their piper cub, so I don't know for sure what that aircraft had as far as a navigation or warning system.