Pocket Wireless Receiver.

New York Times 100 years ago today, July 21, 1912:
French Invention Is Said to Have Remarkable Advantages.
Special Cable to The New York Times.
    PARIS, July 20.— An important step in the progress of wireless telegraphy and telephony is believed to have been made by the discovery of a pocket receiver made on an entirely new principle, which is expected soon to receive Governmental approval.
    The Under Secretary of Posts, M.  Chaumet, this week paid a visit to a place near Alencon in company with Government Directors of the ordinary and wireless telegraph services, for the purpose of making exhaustive tests of the new receiver with the inventor.
    In spite of the troubled atmospheric conditions, the apparatus was declared to give perfectly satisfactory results. Its chief characteristics are great lightness, extreme sensibility, facility of transport, and the readiness with which it can be set working.
    It is asserted that it is impossible for it to get out of order, and no source of electricity is necessary for it. It is thought in technical circles to be an ideal instrument for the army and navy, and it will be of the greatest service in aeroplanes and dirigibles.