Author Topic: Electra Voice Candlestick  (Read 698 times)

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Re: Electra Voice Candlestick
« Reply #15 on: January 23, 2018, 04:39:03 PM » a PA system microphone, a speaker in the room with the microphone may have been disconnected to avoid feedback when the Push to Talk button was pushed to make an announcement.

When I saw that "talk back" system in use in high school (early 60s), the was no speaker in the office with the microphone. Only class rooms had speakers.
            John . . .