Dual triode for computer use. Heaters can be series connected, 12.6V, 0.4A. Note the unusual base connections, with the heater center tap to pin 8 and the anode of second triode to pin 9.
Text in other
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Literature
Electronic Universal Vade-Mecum 1960 group 271
- - Manufacturers Literature
Tube Lore, Sibley, USA 1996
CK5687: rtt
Michael Schlör
CK5687: Manufacturer's Literature
Emilio Ciardiello
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