Radio annual (1945)

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History of Communications. Number Twelve of a Series COMMUNICATION BY THE BLINKER The Blinker, an adaptation of the Heliograph with its own source of light, has been found invaluable for night and day Naval Communications. While limited by "line-of-sight" transmission and the elements of weather, it has been an aid to our cautious convoys during "radio silence." When Victory is ours and the days of "radio silences" are gone forever, private citizens again will have electronic voice communication equipment for their yachts and other pleasure craft. With the release of civilian radio bands Universal will again offer the many electronic voice components for use in marine craft. EXCELLENCE It < FREE— History of Communications Picture Portfolio. Contains over a dozen pictures suitable for office, den, or hobby room. Write for your "Portfolio" today. UNIVERSAL MICROPHONE COMPANY INGLEWOOD, CALIFORNIA FOREIGN DIVISION: 301 CUT STREET, SAN FRANCISCO 11, CALIFORNIA •• CANADIAN DIVISION: 560 KING STREET WEST, TORONTO 1, ONTARIO, CANADA