i have 2 trunked systems where i live a provoice edacs system and a ltr passport system my sherrifs are on the ltr system and police, and fire are on the provoice system when listening to my analog scanner at times i hear the police? it sounds different but i hear them saying unit numbers so it's not broadcasting with the provoice and they are digital is the computers just broadcasting them wrong ? or what? this really confuses me i have a tap on my scanner so i monitor my police all the time. Just wondering how on earth i could be hearing them.