Data set 01
1957 Philips Receiving and Amplifying Tubes
Published operating points and test conditions from this source.
SECTION 2
Hexode
Characteristic
Conversion Conductance
600 µS
ConverterSection
Plate Resistance
1.2 Mohm
ConverterSection
Voltage - Triode (with diode, heptode or hexode) ·Hexode-Triode
UCH41
Series-heater triode-hexode frequency changer for superheterodyne receivers. A local-oscillator triode drives a high-resistance mixer section in AC/DC series-string radio sets.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B8A
- Base pins
- 8
- Nominal heater
- 14 V / 100 mA
Description
Series-heater triode-hexode frequency changer with oscillator triode and mixer hexode sections.
Socket description
Rimlock 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8A
- Base pins
- 8
- Nominal heater voltage
- 14 V
- Nominal heater current
- 100 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
- Amplification factor
- 20
- Max plate voltage
- 250 V
Oscillator triode section.
Section 2
Hexode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 1200000 Ω
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
Hexode mixer/frequency-changer section.
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
1963 Philips Electron Tubes Handbook V1
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate voltage
100 V
OscillatorSection
Plate current
5 mA
OscillatorSection
Characteristic
Amplification factor
20
OscillatorSection
SECTION 2
Hexode
Other
Plate voltage
170 V
FrequencyChanger
Screen voltage
100 V
FrequencyChanger
Plate current
5 mA
FrequencyChanger
Screen current
3 mA
FrequencyChanger
Characteristic
Plate resistance
0.7 Mohm
FrequencyChanger