I converted and AM to bluetooth using an amp module and BT module I bought off amazon. The push buttons are used to select. No radio function, just shoot music through it from my phone.
I attempted this with a thumbwheel radio and couldn't get it to work. The little nylon gears for the thumbwheels just weren't quite strong enough to turn the knob on the bluetooth module consistently. It's definitely a doable job for a knob radio like the one you've got.
