why not what ever tower you copy on, change system to search. Then shift f1, log all the traffic, copy to a file. You will log every id that comes though on the towers yoiu are monitoring. The ids you have stored, you have names of the id's. Ones you don't have, you will get Bolinger if you can hear them. If you can or know a unit id, you can look in the unit id column, and confirm its a unit from Bolinger County.