Voltage - Triode (with diode, heptode or hexode) ·Hexode-Triode
Radio receiver frequency changer designed for superheterodyne mixer and oscillator service. Its multi-grid construction performs signal conversion, often integrating local oscillation and mixing within one valve.
Two-volt triode-hexode frequency changer.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
2 physical sections, each with unique specifications.
Section 1
No fixed ratings are recorded for this section.
Marconi X23 oscillator triode in a 2 V triode-hexode frequency changer. The manufacturer shows 150 V oscillator-anode supply through 20 kΩ as a typical operating example, not a general maximum rating. Previous maximum-anode entry 250 V is unsupported; the limit is left unknown.
Section 2
No fixed ratings are recorded for this section.
Marconi X23 converter hexode: manufacturer gives 150 V anode and 60 V screen as typical receiving operating conditions, with about 0.7 mA anode and 1.7 mA screen current, -1.5 V grid bias and 6 V peak oscillator injection. These are not declared absolute maximum limits, hence maximum voltage fields left NULL. Seven-pin base; preserve application and capacitance data.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Oscillator section function
Local oscillator
Oscillator anode voltage
250 V
Mixer section identity
Hexode
Mixer anode voltage
150 V
Mixer screen voltage
60 V
Frequency-changer service
Explicit