Data set 01
1959 Rogers
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
HeaterOrFilamentVoltage
9 V
HeaterOrFilamentCurrent
300 mA
Application
RF amplifier and self-oscillating mixer
Television
Voltage - Dual Triode (similar) ·Triode-Triode
9AQ8
Double triode designed for television tuner service, combining RF amplification with a self-oscillating mixer function for front-end frequency conversion.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 9 V / 300 mA
Description
Double triode for RF amplification and self-oscillating mixer service in television receivers.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 9 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0062 S
- Amplification factor
- 50
- Max plate voltage
- 250 V
- Max plate dissipation
- 2.5 W
- Max cathode current
- 15 mA
Published ratings and characteristics promoted from the supplied Rogers/Rogers Majestic source. Rogers specifies design-center plate voltage maximum 250 V per section, while Sylvania lists 300 V; selected conservative 250 V. Both sections: 2.5 W individual dissipation maximum, 4.5 W combined, 15 mA cathode current maximum. Typical triode µ 50, gm 6200 µmhos at 170 V and 10 mA. Used as TV RF amplifier and self-oscillating mixer.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0062 S
- Amplification factor
- 50
- Max plate voltage
- 250 V
- Max plate dissipation
- 2.5 W
- Max cathode current
- 15 mA
Second physical triode restored from supplied Rogers double-triode source. Rogers specifies design-center plate voltage maximum 250 V per section, while Sylvania lists 300 V; selected conservative 250 V. Both sections: 2.5 W individual dissipation maximum, 4.5 W combined, 15 mA cathode current maximum. Typical triode µ 50, gm 6200 µmhos at 170 V and 10 mA. Used as TV RF amplifier and self-oscillating mixer.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.