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Power - Pentode (NOT beam) ·Pentode-Rectifier

6939

Industrial twin power pentode for push-pull RF amplification or frequency multiplication at frequencies extending to approximately 500 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9HL
Socket code
B9A
Base pins
9
Nominal heater
12.6 V / 300 mA

Description

Industrial twin power pentode for push-pull RF power amplification or frequency multiplication to 500 MHz.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9HL
Socket code
B9A
Base pins
9
Nominal heater voltage
12.6 V
Nominal heater current
300 mA
Parallel heater voltage
6.3 V
Parallel heater current
600 mA
Series capable
Yes

9HL - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Base PinAG1 — Control Grid

Literal label 1G1; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN2Base Pin—IS — Internal ScreenGroup 9HL2

Literal label IS; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN2Base Pin—K — CathodeGroup 9HL2

Literal label K; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN3Base PinBG1 — Control Grid

Literal label 2G1; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN4Base Pin—H — Heater

Literal label H; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN5Base Pin—H — Heater

Literal label H; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN6Base PinAP — Plate (Anode)

Literal label 1P; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN7Base PinAG2 — Screen GridGroup 9HL7

Literal label 1G2; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN7Base PinBG2 — Screen GridGroup 9HL7

Literal label 2G2; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN8Base PinBP — Plate (Anode)

Literal label 2P; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

PIN9Base Pin—HCT — Heater Center Tap

Literal label HCT; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HL

Section ratings

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
30000 Ω
Transconductance
0.0075 S
Amplification factor
31
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
7 W
Max screen dissipation
1.5 W
Max cathode current
50 mA

Representative row for two identical internally neutralized RF power pentodes.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances
Plate resistance
30000 Ω
Transconductance
0.0075 S
Amplification factor
31
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
7 W
Max screen dissipation
1.5 W
Max cathode current
50 mA

Identical second physical Pentode section; duplicated from representative section per physical-section-row policy.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    600 mA

    Nominal

  • Maximum Plate Voltage

    250 V

  • Maximum Screen Voltage

    200 V

  • Maximum Cathode Current

    60 mA

  • MaximumCathodeCurrentPerSection

    60 mA

    Telegraph intermittent service

  • Heater Voltage Series

    12.6 V

    Series

  • Heater Voltage Parallel

    6.3 V

    Parallel

Characteristic

  • Transconductance

    10500 µS

    Typical

Data set 02

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    600 mA

    Nominal

  • Maximum Plate Voltage

    250 V

  • Maximum Screen Voltage

    200 V

  • Maximum Plate Dissipation

    7.5 W

  • Maximum Cathode Current

    120 mA

  • Maximum Frequency

    500 MHz

Characteristic

  • Transconductance

    10500 µS

    Typical

  • Amplification Factor

    31

    Typical

  • Useful Power Output

    6 W

    PushPull; ICAS; 500 MHz

Data set 03

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

  • Application

    RF amplifier / oscillator / frequency multiplier

Construction

  • Internal neutralization

    Yes

Other

  • Class-C operation

    Published

    ClassC

Data set 04

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate dissipation CCS

    6 W

    TwinTube CCS

  • Maximum plate dissipation ICAS

    7.5 W

    TwinTube ICAS

  • Plate voltage

    180 V

    CCS ClassC

  • Plate current per section

    27 mA

    CCS ClassC

  • Power output

    5.8 W

    CCS ClassC

  • Grid voltage

    -20 V

    CCS ClassC

  • Grid current

    0.75 mA

    CCS ClassC

  • Screen voltage

    180 V

    CCS ClassC

  • Plate voltage

    200 V

    ICAS ClassC

  • Plate current per section

    30 mA

    ICAS ClassC

  • Power output

    7.5 W

    ICAS ClassC

  • Grid voltage

    -20 V

    ICAS ClassC

  • Grid current

    0.75 mA

    ICAS ClassC

  • Screen voltage

    200 V

    ICAS ClassC

Characteristic

  • Maximum frequency

    500 MHz

    FullInput

  • Grid-to-plate capacitance per section

    0.15 pF

    PerSection

  • Input capacitance per section

    6.4 pF

    PerSection

  • Output capacitance per section

    1.6 pF

    PerSection

Data set 05

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage series

    12.6 V

  • Heater current series

    300 mA

  • Heater voltage parallel

    6.3 V

  • Heater current parallel

    600 mA

  • Class C plate voltage ICAS

    300 V

    PushPull;RF

  • Class C plate current ICAS

    50 mA

    EachSection

  • Class C grid current

    10 mA

    EachSection

  • CW plate input ICAS

    14 W

    UpTo500MHz

  • Operating frequency

    500 MHz

    FullRFPower

Characteristic

  • Plate voltage

    150 V

    EachSection

  • Screen voltage

    150 V

    EachSection

  • Plate current

    25 mA

    EachSection

  • Transconductance

    7500 uS

    EachSection

Capacitance

  • Grid-to-plate capacitance

    0.02 pF

    InternallyNeutralized

Data set 06

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid No.l to Plate

    0.15 pF

    Capacitance

  • Grid No.l to Cathode & Grid No.3, Grid No.2, and Heater

    6.4 pF

    Capacitance

  • Plate to Cathode & Grid No.3, Grid No.2, and Heater

    1.6 pF

    Capacitance

  • No. 2 volts = 150, and dc plate mA = 25

    10500 V

    Capacitance

  • = 150, dc grid No.2 volts = 150, and dc plate mA = 25

    31 V

    Capacitance

Other

  • DC Plate Voltage

    250 V

    MaximumRatings;PublishedValue1

  • DC Plate Voltage

    250 V

    MaximumRatings;PublishedValue2

  • DC Grid-No.2 (Screen-Grid) Voltage

    200 V

    MaximumRatings;PublishedValue1

  • DC Grid-No.2 (Screen-Grid) Voltage

    200 V

    MaximumRatings;PublishedValue2

  • DC Grid-No.l (Control-Grid) Voltage

    -100 V

    MaximumRatings;PublishedValue1

  • DC Grid-No.l (Control-Grid) Voltage

    -100 V

    MaximumRatings;PublishedValue2

  • DC Plate Current

    90 mA

    MaximumRatings;PublishedValue1

  • DC Plate Current

    100 mA

    MaximumRatings;PublishedValue2

  • DC Grid-No.l Current

    8 mA

    MaximumRatings

  • DC Cathode Current

    100 mA

    MaximumRatings;PublishedValue1

  • DC Cathode Current

    120 mA

    MaximumRatings;PublishedValue2

  • Plate Input

    12 W

    MaximumRatings;PublishedValue1

  • Plate Input

    14 W

    MaximumRatings;PublishedValue2

  • Grid-No.2 Input

    3 W

    MaximumRatings;PublishedValue1

  • Grid-No.2 Input

    3.5 W

    MaximumRatings;PublishedValue2

  • Grid-No.l Input

    0.2 W

    MaximumRatings;PublishedValue1

  • Grid-No.l Input

    0.24 W

    MaximumRatings;PublishedValue2

  • Plate Dissipation

    6 W

    MaximumRatings;PublishedValue1

  • Plate Dissipation

    7.5 W

    MaximumRatings;PublishedValue2

  • DC Plate Voltage

    180 V

    TypicalOperation;PublishedValue1

  • DC Plate Voltage

    200 V

    TypicalOperation;PublishedValue2

  • DC Grid-No.2 Voltage

    180 V

    TypicalOperation;PublishedValue1

  • DC Grid-No.2 Voltage

    200 V

    TypicalOperation;PublishedValue2

  • DC Grid-No.l Voltage

    -20 V

    TypicalOperation;PublishedValue1

  • DC Grid-No.l Voltage

    -20 V

    TypicalOperation;PublishedValue2

  • From grid resistor for each grid No.l

    27000 ohm

    TypicalOperation;PublishedValue1

  • From grid resistor for each grid No.l

    27000 ohm

    TypicalOperation;PublishedValue2

  • Peak-to-Peak RF Grid-No.l Voltage

    50 V

    TypicalOperation;PublishedValue1

  • Peak-to-Peak RF Grid-No.l Voltage

    50 V

    TypicalOperation;PublishedValue2

  • DC Plate Current

    55 mA

    TypicalOperation;PublishedValue1

  • DC Plate Current

    60 mA

    TypicalOperation;PublishedValue2

  • DC Grid-No.2 Current

    12.5 mA

    TypicalOperation;PublishedValue1

  • DC Grid-No.2 Current

    14 mA

    TypicalOperation;PublishedValue2

  • DC Grid-No.l Current

    1.5 mA

    TypicalOperation;PublishedValue1

  • DC Grid-No.l Current

    1.5 mA

    TypicalOperation;PublishedValue2

  • Driver Power Output (Approx.)

    1.2 W

    TypicalOperation;PublishedValue1

  • Driver Power Output (Approx.)

    1.2 W

    TypicalOperation;PublishedValue2

  • Useful Power Output (Approx.)*

    5 W

    TypicalOperation;PublishedValue1

  • Useful Power Output (Approx.)*

    6 W

    TypicalOperation;PublishedValue2

  • DC Plate Voltage

    200 V

    MaximumRatings;PublishedValue1

  • DC Plate Voltage

    200 V

    MaximumRatings;PublishedValue2