The pentode section of this valve which had a semi-remote cut-off characteristic was primarily intended for use in radio receivers as an intermediate frequency (I.F.) amplifier, the diode sections were used as signal detector and automatic volume control (A.V.C.) rectifier. The pentode section was also frequently used as the first audio stage. 2.5 volt indirectly heated cathode.

Physical Description

Shouldered glass bulb with top cap and American style small 7 pin base mounted on display block.

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