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Voltage - Triode (with diode, heptode or hexode) ·Hexode-Triode

ACH1

Triode-hexode frequency changer for radio receivers. The triode supplies local oscillation while the hexode performs mixer action, combining the principal superheterodyne frequency-conversion functions in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 1 A

Description

Indirectly heated triode-hexode frequency changer for superheterodyne receivers.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
4 V
Nominal heater current
1 A
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
Plate resistance
30000 Ω
Transconductance
0.002 S
Amplification factor
10
Max plate voltage
300 V
Max screen voltage
70 V
Max plate dissipation
1 W

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

Section 2

Hexode

X-ray radiationInterelectrode capacitances
Plate resistance
800000 Ω
Transconductance
0.00075 S
Max plate voltage
300 V
Max screen voltage
70 V
Max plate dissipation
1.5 W
Max screen dissipation
0.5 W

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater or filament voltage

    4 V

    Published nominal value

  • Heater or filament current

    1 A

    Published nominal value

SECTION 2

Hexode

Characteristics

  • Heater or filament voltage

    4 V

    Published nominal value

  • Heater or filament current

    1 A

    Published nominal value

Data set 02

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    4 V

  • HeaterOrFilamentCurrent

    1 A

SECTION 2

Hexode

Characteristic

  • Application

    Frequency changer

Data set 03

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate current

    5 mA

  • Grid-anode capacitance

    2.8 pF

SECTION 2

Hexode

Characteristic

  • Hexode grid capacitance

    7.4 pF

  • Hexode anode capacitance

    14.3 pF

  • Hexode grid-grid capacitance

    0.1 pF

  • Plate current

    2.5 mA

  • Maximum cathode current

    15 mA

  • Maximum heater-cathode voltage

    50 V