摘要: Mobile radio-telephone service has been available to the American public since its inauguration in St. Louis 1946. While this is quite extensively use today by mobile subscribers, and some extent rural areas, present system requires an operator complete connection between a land subscriber. This paper covers development of equipment that will work satisfactorily into dial telephone equipment. The developed for section Rural Electrification Administration, was result done laboratory pilot originally installed North Florida company's property Branford, Fla., recently transferred same exchange Live Oak, Fla.