The Federal Communications Commission's opening of the 900 MHz spectrum for use by the land mobile radio community was a landmark event in the history of mobile radio in the United States, as this action almost doubled the amount of spectrum available. This report describes the current regulatory environment, analyzes the applicability of 900 MHz to law enforcement communications, and presents the conclusions and recommendations that result, as well as recommending a program for demonstration of a working system. A historical, regulatory, and litagory background of Docket No. 18262 is presented. Also detailed are those factors peculiar to the 900 MHz spectrum and the regulatory environment created by affecting the applicability of this spectrum to the satisfaction of law enforcement needs, and the operation of a law enforcement communications system. This discussion provides a basis for understanding how these new technical and regulatory concepts relate to law enforcement systems needs. A description of a five-phase demonstration and technology transfer program including cost estimates and schedules is also included. (JEG)