Summary

These valves were primarily intended for use as an intermediate frequency (I.F.) or radio frequency (R.F.) amplifier in battery powered radios. Theirt remote cut-off characteristic made them suitable for use with automatic volume control (AVC).1.4 volt directly heated cathode.

Physical Description

Valve # 1: Tubular glass bulb with top cap and octal base with 7 pins present. Mounted on display block. Valve # 2: Internal structure of a valve with octal base with 7 pins present. Mounted on display block.

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