Data set 01
1959 Rogers
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Cutoff characteristic
Remote cutoff
Application
Application
RF / IF amplifier
Voltage Radio Detector Converter ·Diode-Diode-Pentode
6DC8
Double-diode remote-cutoff pentode combining detection and AVC rectification with gain-controlled IF amplification. The variable-mu pentode permits smooth receiver gain control while paired diodes handle detector functions.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 300 mA
Description
Dual-diode pentode for detection and RF or IF amplification; source also designates 6DC8.
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
- 6.3 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
3 physical sections, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 900000 Ω
- Transconductance
- 0.0045 S
- Amplification factor
- 20
- Max plate voltage
- 300 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 2.25 W
- Max screen dissipation
- 0.45 W
- Max cathode current
- 16.5 mA
Pentode section; representative characteristic point uses 250 V plate and 100 V screen.
Section 2
Diode
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 200 V
- Rectifier peak forward current
- 5 mA
Detector diode I.
Section 3
Diode
X-ray radiationInterelectrode capacitances
- Rectifier peak forward current
- 5 mA
Detector diode II.
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.
Data set 02
195X Tesla
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Interelectrode capacitances
Published
See source sheet for electrode-specific capacitance values
SECTION 2
Diode
Characteristics
Interelectrode capacitances
Published
See source sheet for electrode-specific capacitance values
SECTION 3
Diode
Characteristics
Interelectrode capacitances
Published
See source sheet for electrode-specific capacitance values
Data set 03
1963 Amperex Condensed
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
250 V
IFAmplifier
Screen voltage
100 V
IFAmplifier
Control-grid bias
-2 V
IFAmplifier
Plate current
9 mA
IFAmplifier
Screen current
2.7 mA
IFAmplifier
Characteristic
Amplification factor
20
IFAmplifier
Plate resistance
1000000 ohm
IFAmplifier
SECTION 2
Diode
Characteristic
Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating
Data set 04
1968 Mazda Belvu
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Application
RF_IF_Amplifier text
SECTION 2
Diode
Application
Application
Detector text