Hi all, I don't know if this is covered somewhere already, but I was trying to figure out this: I have several talkgroups entered into a digital system. I have locked out a few of them. How do I unlock one or more of them if I want to listen to a particular one? I am a new owner of the psr500 and am still learning and finding my way with this scanner. I have only owned Unidens and rs's in the past. Any help is appreciated. I am still learning how to pragram this terrific scanner. Digital sound quality smokes the pro-96 i had previously.