Power - Pentode (NOT beam) ·Pentode
High-current wideband output pentode providing substantial current at comparatively low plate voltage.
Wide-band output pentode for broadband power-amplifier service.
Small-button Noval 9-contact
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.
1 physical section, each with unique specifications.
Section 1
Published no-load limits Ua0/Ug20 are 550 V; operating maximum plate/screen ratings are 250 V.
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.
Plate voltage
140 V
Screen voltage
170 V
Control-grid voltage
-12 V
Plate current
70 mA
Transconductance
10000 uS
Plate resistance
14 kOhm
Input capacitance
13 pF
Output capacitance
8 pF
Grid-plate capacitance
- to 0.15 pF
Grid-heater capacitance
- to 0.2 pF
Data set 02
Published operating points and test conditions from this source.
Plate voltage
140 V
Screen-grid voltage
170 V
Cathode resistor
160 Ohm
Plate current
70 mA
Transconductance
10000 uS
Plate resistance
14000 Ohm
Screen-grid to control-grid amplification ratio
9 ratio
Input capacitance
13 pF
Output capacitance
8 pF
Grid-to-plate capacitance maximum
0.15 pF