CCH35

Triode-hexode frequency changer with a variable-mu mixer section suited to automatic gain-control operation. The triode supplies local oscillation while the hexode performs controlled frequency conversion.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: Octal
Socket code: IO
Base pins: 8
Nominal heater: 7 V / 200 mA

Description

Triode-hexode frequency changer; the hexode section is intended for automatic-gain-control operation. The page refers electrical characteristics to ECH35.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: Octal
Socket code: IO
Base pins: 8
Nominal heater voltage: 7 V
Nominal heater current: 200 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Octal - 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

Transconductance: 0.0028 S
Amplification factor: 24
Max plate voltage: 100 V
Max plate dissipation: 1.5 W

Oscillator triode section; operating data cross-referenced to ECH35.

Section 2

Hexode

X-ray radiationInterelectrode capacitances

Plate resistance: 1300000 Ω
Max plate voltage: 300 V
Max screen voltage: 125 V
Max plate dissipation: 1.2 W
Max screen dissipation: 0.6 W
Max cathode current: 15 mA

Variable-mu hexode mixer section; SectionType vocabulary has no Hexode.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
7 V
Heater current
200 mA
Electrical equivalence reference
ECH35
Triode section; except heater

SECTION 2

Hexode

Other

Electrical equivalence reference
ECH35
Hexode section; except heater

Data set 02

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Reference Type
ECH35
CharacteristicsCurvesAndOperatingConditions

SECTION 2

Hexode

Other

Reference Type
ECH35
CharacteristicsCurvesAndOperatingConditions
AGC Suitability
1 boolean
HexodeSection