Electronic Industries and Tele-tech

Electronic Industries and Tele-tech

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Some volumes include a directory section.A buzzer loud enough to be heard is too loud for the microphone and a blinker light, as furnished by the telephone company, is too dim to be ... rURNISHED BY THE TELEPHONE COMPANY DC relay improves a#39;phone blinker circuit signal light may be any value of 115 volt lamp which ... 3 RCA LATERAL PICK-UP HEAD.

Title:Electronic Industries and Tele-tech
Publisher: - 1952


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