Data set 01
1959 Rogers
Published operating points and test conditions from this source.
SECTION 1
Tuning Indicator
Application
Application
Visual tuning indication
SECTION 2
Triode
Application
Application
Indicator control amplifier
Tuning Indicator ·Triode-TuningIndicator
6CD7
Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 8EV
- Socket code
- IO
- Base pins
- -
- Nominal heater
- 6.3 V / 200 mA
Description
Double-sensitivity electron-ray tuning indicator that gives clear indication even with weak signals.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8EV
- Socket code
- IO
- Base pins
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 200 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
8EV - 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
Tuning Indicator
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 300 V
Electron-ray display section.
Section 2
Triode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published Rogers/JETEC/RMA ratings and characteristics promoted where applicable; additional data retained as parameters.
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 General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Tuning Indicator
Other
Maximum target voltage
300 V
TuningIndicator
Plate voltage
250 V
TuningIndicator
Plate resistor per plate
1000000 ohm
TuningIndicator
Target voltage
250 V
TuningIndicator
Characteristic
Grid voltage for sector 2 minimum shadow
-16 V
TuningIndicator
Grid voltage for sector 1 minimum shadow
-5 V
TuningIndicator
Grid voltage for 180 degree shadow
0 V
TuningIndicator
Data set 03
1963 Amperex Condensed
Published operating points and test conditions from this source.
SECTION 1
Tuning Indicator
Other
Plate and target supply voltage
250 V
TuningIndicator
Target current
2 mA
TuningIndicator
Application
Double-sensitivity tuning indicator
Section1
Characteristic
Grid bias end of control range section 1
-5 V
TuningIndicator;Section1
Grid bias end of control range section 2
-16 V
TuningIndicator;Section2