900 MHz trunked communications system functional requirements development : the identification of the specific operational capabilities that should be incorporated in a demonstration trunked communication system for law enforcement agencies /
United States.National Criminal Justice Information and Statistics Service.
[Washington] : Dept. of Justice, Law Enforcement Assistance Administration, National Criminal Justice Information and Statistics Service : For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1979.
Prepared under Grant No. 78 SS AX 0021.
March 1979.
Mobile communication systems.