Proposed frequency band designations

THE CHART of Figure 1 was prepared through the efforts of the AIEE Joint Technical Committee on Standard Frequency Bands and Designations. The primary object of the chart is to promote the use of band designation numbers to indicate frequency ranges over the whole useful range of frequencies which occur in nature, thus giving a single co-ordinated system. It will be noted that the band number is the exponent of ten corresponding to the lowest frequency of the band.