Greetings, I'm a new owner of a 6300. My question is in shutting down the radio itself, I'm currently pushing the button on the radio and the icon goes off, Later I shut down the Astron power supply & momentarily the icon lights up then goes off. First is that normal? Second is it best to leave the power supply on? thoughts about leaving the radio on instead of shutting it down for several hour's of non use. Thank you, Corey.