High-Mu Twin Power Triode
RCA - CUNNINGHAM RCA
Manufactured 1937
This is an ETCHED Vacuum Tube.
Glass type used in output stage of ac-operated receivers
as a class B power amplifier.
Electrical Data ( RCA RC-13 - 1937)
Heater Voltage ................................ 2.5 V
Heater Current ................................ 2 A