Data set 01
192X Marconi Valve
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Anode voltage
200 V
Screen 50-80 V; grid bias approximately -1.5 to -3 V
Voltage Tetrode ·Tetrode
DS
High-efficiency screen-grid tetrode with exceptionally low anode-grid capacitance for high-frequency and intermediate-frequency amplification in DC-mains receivers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater
- 16 V / 250 mA
Description
High-efficiency screen-grid valve with exceptionally low anode-grid capacitance, suitable for H.F. and I.F. amplification in D.C. mains receivers.
Socket description
European 4-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater voltage
- 16 V
- Nominal heater current
- 250 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
Tetrode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 500000 Ω
- Transconductance
- 0.0011 S
- Amplification factor
- 550
- Max plate voltage
- 200 V
Published characteristics/ratings were promoted when unambiguous; remaining operating values are preserved in TUBE_SECTION_PARAMETER.
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
1955 Marconi
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Filament/heater voltage
16 V
Filament/heater current
250 mA
Maximum anode voltage
200 V
Characteristic
Amplification factor
550
Plate resistance
500000 ohm
Transconductance
1100 uS
Capacitance
Anode-grid capacitance maximum
0.002 pF