Show PHONE MESSAGE WITHOUT WIRES HUMAN VOICE TRANSMITTED BY gy Y RADIO TO POINT 2500 MILES AWAY Conducted by Navys Navy's i Ra Radio io Service Shows That Eventually Eventually Eventually Even Even- One May Talk Over Airline Air line to Any Part of World Washington Wireless telephone communication across the continent p. p vas was accomplished for the first time P Wednesday when experiments ex ex- tending lending over several months ed ad in su successful transmissions of the theuman theuman uman voice by radio from the great naval plant at Arlington Va to the 1 Station tation at Mare Island near San FrancIsco Fran- Fran cIsco Kisco 2500 miles away The experiments were conducted under hinder direction of Captain Bullard chief chie of the navys navy's radio service in operation co with the American Telephone Telephone Telephone Tele Tele- phone Telegraph company and the Western Vestern Electric company Secretary Daniels In announcing the result predicted that further development development develop development ment of wireless telephony would make snake great changes la in long distance distan e communication both tooth for military and naval service and In commercial us us- age Successful operation of a device for automatically transferring to the radio radio ra ra- ra- ra dio telephone conversations originating Ing ing on metallic circuits also was accomplished accomplished accomplished ac ac- ac- ac In Wednesdays Wednesday's tests resident President Theodore N. N Vail and other officials of the American Telephone C C Telegraph company at New York talked easily with the Mare Island station station station sta sta- tion the conversation traveling over an ordinary metallic line Une from New NewYork NewYork NewYork York to Arlington and thence by radio across lacross cross the he continent The fact that the voice can be started on a land wire and automatically automatically automatic automatic- ally transmitted to a voice radio transmitter said Secretary Daniels holds out the hope that persons Inland inland inland in In- land readily should be put in touch by telephone with others at sea through some central transmitting sta sta- tion |