in lour distance telephoning the sp«atts bps should almost touch the transmitter. Kvcry half-inch the lips are away from (ho transmitter lessens tho effentivßucss of speech by about twenty mile*.
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Bibliographic details
Evening Post, Volume CVI, Issue 30, 4 August 1923, Page 14
Word Count
30Untitled Evening Post, Volume CVI, Issue 30, 4 August 1923, Page 14
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