help out a newbie to CB\'s... please, that is,- Want to get some radio stuff in my blazer. I would like a decent radio with the weather channels. I found a cobra 18 with the weahter channels in a dallas shop for $66. That is about how much I want to spend. What do ya think about this unit? suggestions? What exactly is a power mic? I really want a 'roger beep', is that just a matter of getting some component installed? How much? thanks for the help!