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Description
British-made broadcast receiving valve (triode-hexode/frequency converter), spray-coated red. Numbers "1041 2K1" on base. (The spray coating was partially used the hide blackened interior resulting from the Mullard azide process used during manufacturing, but also acted as a barrier to keep signals from interfering with tube reception).
Type
image
Identifier
957F10DA-DCAE-4735-A732-968032160659 2003-1-779
Subject
Vacuum-tubes Valves Nineteen thirties Nineteen forties Radio--Receivers and reception
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