Summary

Triode- diode- diode. The diodes in this valve were designed for use as the signal detector and automatic gain control rectifier in radio receivers, the medium mu triode section was designed to be used as a resistance coupled audio amplifier following the detector. 4 volt indirectly heated cathode.

Manufacturer: Philips, Unknown country of manufacture

Physical Description

Base type: side contact No. of pins in base: 8 Bulb shape: shouldered Bulb material: glass - gold coloured coating on glass envelope Top cap Unusual S8 base and top cap.

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