6.3 V indirectly heated cathode, manufactured by Hivac, Chesham, England, 1948. Manufactured for the British Services.

CV1056 is the British Services 'Common Valve' designation for the commercial EF36 valve. It is a sharp cut-off pentode designed for use in audio and radio frequency amplifiers.

Physical Description

Small shouldered metal sprayed glass bulb, with top cap, on octal base with 7 pins present.

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