B.T.H. "R.K. energised" 8-inch loudspeaker

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B.T.H. R.K. energised' 8-inch loudspeaker'
Science Museum Group
© The Board of Trustees of the Science Museum

B.T.H. "R.K. energised" 8-inch loudspeaker

Details

Category:: Radio Communication

Object Number:: 1969-4

type:: loudspeaker

credit:: Webb, G.R.

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B.T.H. "R.K. energised" 8-inch loudspeaker

Details

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