Voltage Radio Detector Converter ·Pentode-Triode
Combined triode-pentode used as an oscillator and mixer or frequency converter in television or VHF communications receivers.
Triode-pentode for television frequency-converter, IF, oscillator, and related 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.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN12G1 | B | G1 — Control Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN22P | B | P — Plate (Anode) EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN3K | A | K — Cathode EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN4H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN5H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN61P | A | P — Plate (Anode) EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN71G2 | A | G2 — Screen Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN81G3 | A | G3 — Suppressor Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
| PIN91G1 | A | G1 — Control Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DW |
2 physical sections, each with unique specifications.
Section 1
Promoted from the printed maximum-rating/characteristic columns; operating points retained as section parameters.
Section 2
Promoted from the printed maximum-rating/characteristic columns; operating points retained as section parameters.
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.
Conversion transconductance
2100 uS
MixerService
Conversion transconductance
2800 uS
MixerService
Data set 02
Published operating points and test conditions from this source.
Plate voltage
250 V
Pentode ClassA
Screen voltage
150 V
Pentode ClassA
Plate current
7.7 mA
Pentode ClassA
Screen current
1.6 mA
Pentode ClassA
Plate voltage
100 V
Triode ClassA
Plate current
8.5 mA
Triode ClassA
Plate voltage
250 V
Pentode ClassA
Screen voltage
150 V
Pentode ClassA
Plate current
7.7 mA
Pentode ClassA
Screen current
1.6 mA
Pentode ClassA
Plate voltage
100 V
Triode ClassA
Plate current
8.5 mA
Triode ClassA
Data set 03
Published operating points and test conditions from this source.
HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
450 mA
Transconductance
5500 uS
Amplification Factor
40
Grid To Plate Capacitance
2 pF
Input Capacitance
3 pF
Output Capacitance
2 pF
Plate Voltage
125 V
TriodeUnit
Plate Current
10 mA
TriodeUnit
Plate Voltage
125 V
PentodeUnit
Screen Voltage
125 V
PentodeUnit
Plate Current
10 mA
PentodeUnit
Screen Current
3.5 mA
PentodeUnit
Transconductance
6500 uS
GridToPlateCapacitanceMaximum
0.015 pF
Input Capacitance
5 pF
Output Capacitance
3.5 pF