HELMET RADIO SET.
Scotland Yard Tests With Two Valve Receivers. MESSAGES THROUGH SKULL. (Received 11.30 a.m.) LONDON, April 19. Scotland Yard is experimenting with 4 two-valve receiving set carried in the pockets of all policemen on their beats and connected with another piece of mechanism in the policemen's helmets which serves as- an car-phone, though the message is sent through the skull instead of directly into the ear. The appliance will only add 1J ounces to the weight of the helmet. The set has a minimum range of 100 miles and will enable police headquarters or police radio vans to keep communication with any constable on duty and to notify him of grab raids and other emergencies. Thp present tests follow extensive trials with miniature wireless receivers by Brighton policemen while on duty. ■
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Bibliographic details
Auckland Star, Volume LXIII, Issue 93, 20 April 1932, Page 7
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133HELMET RADIO SET. Auckland Star, Volume LXIII, Issue 93, 20 April 1932, Page 7
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