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Radio Record, Volume II, Issue 20, 30 November 1928, Page 3

(THE German Post Office (Says the Berlin correspondent of the London "Times"’) is erecting a high-power, short-wave transmitter at Konigswusterhausen, from where it will commence

broadcasting # world programme in February, disseminating German culture and promoting international understanding. HE Bell Telephone Laboratories demonstrated on July 12 a new photoelectric cell which is considerably more sensitive than any similar device so far shown publicity. The original television transmitter and receiver, demonstrated over a year ago, were used in the newer demonstration and by. application of the more sensitive photoelectric cell, a full size figure in motion was successfully televised. The new cell greatly increases the range of vision of the eye of television and places, and places even greater emphasis on the still unsolved problem of conserving the frequency or channel space required to transmit a television image of sufficient detail to have real entertainment value.