i own several radios which i use to monitor just like scanners, the scan rate is obviously slower, but the audio is great. my question is i have a pro 106 which i currently monitor my digital stuff with, can i do the same as i am doing with my other full blown radios if i buy a digital mobile or portable or do i need a system key, etc. if thats the case then obviously its not worth the time and/or expense. any other ideas? I'm also thinking of getting a mobile scanner if i can't do the radio deal, so which would be better AUDIO-WISE the 996 or the pro-197? i like the 106 but i'm sure the mobiles are different