Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode
Directly heated dual-diode triode for detector, AVC and audio amplifier service.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
3 physical sections, each with unique specifications.
Section 0
Triode Class A: Va 135 V, Vg -3 V, Ia 0.8 mA.
Section 1
No fixed ratings are recorded for this section.
First independent signal diode detector, common directly heated filament.
Section 2
No fixed ratings are recorded for this section.
Second independent signal diode detector/AVC, common directly heated filament.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Grid-to-plate capacitance
3.8 pF
Triode grid to plate
Input capacitance
2 pF
Triode input
Output capacitance
3 pF
Triode output
Plate voltage
135 V
Class A triode
Heater/filament voltage
2 V
Filament voltage
Heater/filament current
60 mA
Filament current