A discussion of the results of a Joint Technical Advisory Committee (JTAC) project to (1) investigate inadequacies of the present radio communications management system and (2) recommend an advanced technical system for fuller utilization of the spectrum. Assignments of channels could be based on a type of block allocation principle; namely, the applicant's needs for spectrum and the availability of spectrum in the geographic area of his prospective operation. One vital component of the JTAC recommended spectrum engineering system, and of the pilot project, is a computerized database showing the use made of channels in the spectrum bands of concern and identifying as such those channels not in use. A listing of spectrum requirements attempts to set up comparison of the applicant's usage with the overload/saturation criteria appropriate. To validate new analytical models, techniques, and acquired data, some field measurement and monitoring will be required in support of the simulation capability. 31 pp.