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RCA 4-A-1 Condenser Microphone – By John Staples W6BM

RCA 4-A-1 Condenser Microphone – by John Staples W6BM

The RCA 4-A-1 condenser microphone was the mainstay of studio microphones starting in the 1930s in the NBC  network.

RCA 4-A-1 Microphone

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