Hi, You could set up a search around the frequency range that this agency normally uses. They may have an old frequency still in use or may use a street dept. or other city channel. Of course "go to 6" could mean anything. It could mean go to Nextel. In the old days we used something like that to switch to CB. If it were me I would find a friendly looking officer and strike up a casual conversation and flat out ask them. When i was on the street I always enjoyed talking to scanner enthusiast and recall driving through town on an emergency call and seeing residents standing in their yards with a scanner in their hand. Keeps you honest when the people that pay your salary are listening to you work.