Monitoring of harmful interference to the HF (High Frequency) broadcasting service. 2: Results of the January 1986 coordinated monitoring period

This is the second in a series of reports describing the results of studies to determine the location of sources of harmful interference to the HF broadcasting service. Using observations recorded during the January 1986 monitoring program conducted by the International Frequency Registration Board, the report describes procedures used to analyze the data; amplifies studies of earlier monitoring programs; identifies frequently observed emitters of harmful interference; and note the extent of such interference to programs of leading international broadcast organizations.