1. On March 3, 2015, in response to continued complaints of interference, an agent from the Detroit Office returned to the Cincinnati area to again attempt to identify the source of the transmissions. This time the agent did not advise the local amateur radio group that he was in the area. The agent used mobile direction finding techniques to locate the source of the transmissions to 4472 Forest Trail, Cincinnati, Ohio, the address of record for Mr. Hicks’ amateur station KB8UYZ. The agent monitored the transmissions emanating from Mr. Hicks’ station for approximately one (1) hour and heard his station transmit several prerecorded messages. These transmissions prevented other amateur licensees from communicating over the frequency. During the monitoring period, the agent did not hear Mr. Hicks transmit his assigned call sign. The transmissions used the call sign of another licensee.