Pioneer DEH-1600 CD Player "radio manual preset channels" Questions

...manual. How do you preset channels and do you have to have power to radio at all times to have channels saved each time you turn vehicle on and off ? Para que las estaciones se queden en la memoria ...

...manual I want to preset radio stations and being able to manage the clock Check google for most of the time if you goto the radio channel and press and hold the present button you want it will save ...