Combining automated monitoring with a national licensing database for radio spectrum enforcement

The Canadian National Licensing Database and Radio Frequency Allocation Plan are used with a specialized culling computer program to generate a list of frequencies to be monitored. This list consists of unassigned frequencies within a geographic area. These frequencies are then loaded into an automated monitoring system which obtains occupancy data under computer control. The onboard computer in the automated monitoring system is then used to analyze the data to determine frequencies which are being used. The frequencies found to be active are due to either illegal operation, interference problems, or data integrity problems in the database or the allocation plan. This method is intended for radio spectrum enforcement, since it identifies those radio frequencies, out of a much larger set, requiring further investigation, making the task of radio spectrum enforcement more manageable. The radio frequencies of interest are in the congested land mobile bands of 138-174 MHz, 406-470 MHz, and 806-890 MHz