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Power - Tetrode (NOT beam) ·Tetrode

6848

Metal-ceramic four-electrode transmitting tetrode for grounded-grid RF power amplifier or oscillator service through approximately 800 MHz, with an integral forced-air-cooled anode radiator.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9V
Socket code
-
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

Metal-and-ceramic four-electrode transmitting tetrode for grounded-grid RF power amplifier or oscillator service through 800 MHz, with integral forced-air-cooled anode radiator.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9V
Socket code
-
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9V - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1PAP — Plate (Anode)

EIA source designation P; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN3H—H — Heater

EIA source designation H; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN4G1AG1 — Control Grid

EIA source designation G1; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN5G1AG1 — Control Grid

EIA source designation G1; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN6KAK — Cathode

EIA source designation K; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN7G1AG1 — Control Grid

EIA source designation G1; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN8G1AG1 — Control Grid

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9V

PIN9H—H — Heater

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 130, 9V

Section ratings

1 physical section, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
1800 Ω
Transconductance
0.004 S
Amplification factor
20
Max plate voltage
180 V
Max screen voltage
750 V
Max plate dissipation
2000 W

Published maximum ratings, representative operating conditions, and available capacitance/rectifier data reviewed.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Maximum plate voltage

    180 V

    Published handbook rating

  • Plate voltage

    150 V

    ClassA

  • Plate current

    26 mA

    ClassA

Characteristic

  • Plate resistance

    1800 ohm

    Published handbook characteristic

  • Transconductance

    4000 µS

    Published handbook characteristic

  • Amplification factor

    43

    Published handbook characteristic

  • Heater/filament voltage

    6.3 V

    Published heater/filament rating

  • Heater/filament current

    300 mA

    Published heater/filament rating

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Cathode-to-plate capacitance

    0.01 pF

  • Input capacitance

    28 pF

  • Output capacitance

    6.6 pF

Other

  • Class C output power

    3.2 kW

    ClassC