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Valves

DK92 or 1C2 Heptode Mixer

1.5 volt battery operated valve

DK92 Heptode Mixer 1C2 Heptode Mixer
DK92 and 1C2 Heptode Mixer

This valve was used as the mixer stage in battery operated portable radios in the 1950s and early 60s.

Andy Cowley, 2006/7    Home