Voltage Tetrode ·Tetrode
General-purpose screen-grid tetrode with extremely low anode-grid capacitance for stable high-frequency amplification in receiving equipment.
General-purpose screen-grid valve for universal use, with extremely low anode-grid capacitance for stable high-frequency amplification.
European 5-pin base
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 characteristics/ratings were promoted when unambiguous; remaining operating values are preserved 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.
Published operating data
See source
Operating curves/table are present on the approved one-page source; values not promoted unless unambiguous in searchable text.
Data set 02
Published operating points and test conditions from this source.
Filament/heater voltage
4 V
Filament/heater current
1 A
Maximum anode voltage
200 V
Maximum screen voltage
60 V
Amplification factor
550
Transconductance
1100 uS
Plate resistance
500000 ohm