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Perdio PR4
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Perdio ( Pr3 ?)
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Perdio (Pr3 ?). Pcb closeup .
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Perdio (Pr3 ?) pcb close up . Note Perdio IF transformer...
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Perdio (Pr3 ?). Inside as found.
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Transistor Superhet Receivers - Clive Sinclair
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Perdio pr2 pcb layout
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Perdio pr4 pcb layout
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'PR3 ' advert PW april 1959 - Home build.