Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
HeaterOrFilamentVoltage
2 V
HeaterOrFilamentCurrent
50 mA
Voltage Pentode - Remote Cutoff (single) ·Pentode
KF35
Directly heated variable-mu high-frequency pentode for battery-operated RF and IF receiver stages.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 2 V / 50 mA
Description
Battery variable-mu high-frequency pentode.
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
- 2 V
- Nominal heater current
- 50 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
Pentode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 150 V
- Max screen voltage
- 150 V
Variable-mu RF/IF pentode.
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
Pentode
Other
Plate Voltage
120 V
Screen Voltage
60 V
Maximum Plate Voltage
150 V
Maximum Screen Voltage
150 V
Characteristics
Transconductance
1300 uS