Scanners used to provide this feed are: GRE PSR 500 (Denver Police - Left Channel), GRE PSR 500 (Denver Fire & EMS - Right Channel). Using media players with left/right audio balance controls (such as winamp) will allow you to seperate the feeds according to personal preferences. Using Winamp, Real Player, and iTunes players will show you what channel (alpha tags) is currently being heard. Frequency / talkgroup database for this system. Denver Police Dept district station locations & district boundaries. Denver Fire Dept district station locations & district boundaries