Hi, Recently I've begun "prepping" and bought a Baofeng Uv-5r radio to use as a police/ems/fire scanner. While the EMS scanning works good for a few of the frequencies I have found here, I just cant get any Police or Fire frequencies to work. I've downloaded chirp and somewhat get how to use it, but there's alot that I don't understand. I don't know if these all need to be a certain setting to pickup Police or Fire transmissions or what. I've watched videos about this radio and using it as a police scanner, all they did was dial in the frequency and they were good to go. I just don't get anything when I do the same. I'm located in Knoxville, TN if that helps with my problem.