Voltage Tetrode ·Tetrode
High-gain sharp-cutoff tetrode for low-noise VHF television tuner service. Its design emphasizes sensitive RF amplification ahead of the converter stage.
High-gain sharp-cutoff tetrode for low-noise VHF television tuner service.
Miniature 7-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
Promoted values are from the supplied Westinghouse family sheet; additional published ratings, characteristics and operating points are retained in TUBE_SECTION_PARAMETER.
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.
MAX IMUM PLATE VOLTAGE
275 VOLTS
Published datasheet value
MAXIMUM CATHODE CURRENT
20 MA
Published datasheet value
PLATE VOLTAGE
250 VOLTS
Published datasheet value
GRID #2 CURRENT
0.9 MA
Published datasheet value
Data set 02
Published operating points and test conditions from this source.
Plate voltage
250 V
Screen-grid voltage
80 V
Grid 1 voltage
-1 V
Plate resistance
150000 Ohm
Transconductance
8800 uS
Control-grid cutoff voltage
-4.5 V
Grid-to-plate capacitance
0.035 pF
Shielded
Input capacitance
4.5 pF
Shielded
Output capacitance
2.9 pF
Shielded
Data set 03
Published operating points and test conditions from this source.
Grid-to-plate capacitance maximum
0.035 pF
Section1
Input capacitance
4.5 pF
Section1
Output capacitance
2.9 pF
Section1
Plate voltage
250 V
VHFTuner
Screen voltage
80 V
VHFTuner
Grid voltage
-1 V
VHFTuner
Plate current
11.5 mA
VHFTuner
Screen current
0.9 mA
VHFTuner
Plate resistance
0.15 MΩ
Section1
Transconductance
8800 µS
Section1
Grid-1 cutoff bias
-4.5 V
Section1