This valve combined a low-mu triode with a remote cut-off pentode which could be used in a number of ways including as a tuned radio frequency amplifier followed by a triode detector or as a frequency changer with the triode as the local oscillator and the pentode as the mixer. 6.3 volt indirectly heated cathode.

Physical Description

Shouldered glass bulb with top cap and American small 7 pin base. White getter indicates that the vacuum has been lost. Mounted on display block with a sectioned example of the same type of valve.

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