Hello all, new here. I know nothing about the scanner world. This looks like a good site to learn. I do know that my old Pro-2039 will become obselete later this year when Butler Co. switches to the new system. But, i'll worry about that when the time comes. In the meantime, it works great. I mainly listen to Middletown PD and Fire. I was wondering if anyone can tell me what their unit call signs represent. I've heard Lincoln Units, Adam Units (two man unit's I believe), KL something units, and David Units (Detectives maybe?). Thanks for any info!