According to the FCC site, Banks County isn't assigned 153.0500.
Have you tried 154.2800 or just the output side on 154.3250? If it's simplex, you would have to be close to hear them.
Also, according to the FCC, they are licensed on 151.2575/155.8800 under WQLR275 which states:
90.20a - GOVERNMENTAL ENTITY WILL USE RADIOS FOR OFFICIAL FIRE AND PUBLIC SAFETY COMMUNICATIONS