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Voltage Pentode or Tetrode (with diode) ·Diode-Diode-Pentode

1K6

Duo-diode pentode combining two detector diodes with a pentode amplifier section; available documentation does not support a narrower functional assignment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
-
Socket code
-
Base pins
6
Nominal heater
2 V / -

Description

Duo-diode pentode.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
6
Nominal heater voltage
2 V
Nominal heater current
-
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

3 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Amplification factor
15
Max plate voltage
180 V
Max screen voltage
135 V

Promoted values from 1K7G.pdf; section type follows printed electrode/function description.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted values from 1K7G.pdf; section type follows printed electrode/function description.

Section 3

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted values from 1K7G.pdf; section type follows printed electrode/function description.

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 01

1946 Amalgamated Wireless

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater or filament voltage

    2 V

    Published nominal rating

  • Grid-to-plate capacitance

    0.015 pF

    Direct interelectrode capacitance

  • Input capacitance

    5 pF

    Direct interelectrode capacitance

  • Output capacitance

    10.5 pF

    Direct interelectrode capacitance