Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Octode
Characteristics
Cutoff characteristic
Variable-mu
Application
Service
Frequency changer / mixer-oscillator
Voltage Radio Detector Converter ·Octode
EK32
Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 6.3 V / 200 mA
Description
Variable-mu octode frequency changer for receiver mixer/oscillator service.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 200 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
1 physical section, each with unique specifications.
Section 1
Octode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 2000000 Ω
- Transconductance
- 0.00055 S
- Max plate voltage
- 250 V
- Max screen voltage
- 125 V
- Max plate dissipation
- 1 W
- Max screen dissipation
- 0.3 W
- Max cathode current
- 12 mA
Octode represented as Other; rp/gm from published medium/long-wave 1 mA point.
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
1958 Mullard Receiving Tubes
Published operating points and test conditions from this source.
SECTION 1
Octode
Other
Plate voltage
250 V
MediumLongWave
Screen-grid voltage
200 V
MediumLongWave
Conversion conductance
550 uS
MediumLongWave; Ia=1mA
Plate resistance
2 MOhm
MediumLongWave; Ia=1mA
Conversion conductance
650 uS
ShortWave
Plate resistance
0.9 MOhm
ShortWave