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79

Transmitting power triode intended for RF amplifier and oscillator service, with manufacturer ratings emphasizing radio-frequency output, substantial plate loading, and professional transmitter operation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 6H
Socket code: UX6
Base pins: 6
Nominal heater: 6.3 V / 600 mA

Description

A complete Class B dual-triode power amplifier especially suited to automobile receiver service, providing high output with low battery-current demand.

Socket description

Small 6-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 6H
Socket code: UX6
Base pins: 6
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

6H - 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

Max plate voltage: 250 V
Max plate dissipation: 11.5 W
Max cathode current: 90 mA

Published handbook ratings and representative operating characteristics reviewed.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Max plate voltage: 250 V
Max plate dissipation: 11.5 W
Max cathode current: 90 mA

Second identical physical section; added to align physical rows with SectionCount.

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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Peak plate current maximum
90 mA
EachSection
Plate voltage
180 V
ClassB;PushPull;TwoTubes
Control-grid voltage
0 V
ClassB;PushPull;TwoTubes
No-signal plate current per plate
3.8 mA
ClassB;PushPull;TwoTubes
Load resistance plate-to-plate
7000 Ω
ClassB;PushPull;TwoTubes
Power output
5.5 W
ClassB;PushPull;TwoTubes
Plate voltage
250 V
ClassB;PushPull;TwoTubes
Control-grid voltage
0 V
ClassB;PushPull;TwoTubes
No-signal plate current per plate
5.3 mA
ClassB;PushPull;TwoTubes
Load resistance plate-to-plate
14000 Ω
ClassB;PushPull;TwoTubes
Power output
8 W
ClassB;PushPull;TwoTubes

Data set 02

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Power Output
8 W
ClassB;PushPull;TwoTubes

Data set 03

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Anode Voltage
180 V
ClassB; TwoTubes
Zero-Signal Anode Current
7.6 mA
ClassB; TwoTubes
Input Driving Power
0.35 W
ClassB; TwoTubes
Optimum Anode-to-Anode Load
7000 ohm
ClassB; TwoTubes
Power Output
5.5 W
ClassB; TwoTubes
Anode Voltage
250 V
ClassB; TwoTubes
Power Output
8 W
ClassB; TwoTubes

Data set 04

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Voltage
6.3 V
Nominal published value
Heater Current
600 mA
Nominal published value

Data set 05

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum plate voltage
250 V
Published handbook rating
Plate voltage
250 V
ClassB PushPull TwoTubes
Control-grid bias
0 V
ClassA
Plate current
10.5 mA
ClassA
Load resistance
14000 ohm
ClassB PushPull TwoTubes
Power output
8 W
ClassB PushPull TwoTubes

Characteristic

Heater voltage
6.3 V
Published heater rating
Heater current
600 mA
Published heater rating

Data set 06

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
6.3 V
Nominal
Heater current
600 mA
Nominal