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Power - Beam (NOT sweep) (over 1000V 100W) ·BeamPower

814

Thoriated-tungsten beam-power transmitting tube designed for RF amplifier and oscillator service, usable at full input to approximately 30 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
MEDIUM5
Base pins
5
Nominal heater
10 V / 4 A

Description

Thoriated-tungsten beam-power tube for RF amplifier and oscillator service, usable with full input to about 30 MHz.

Socket description

Medium 5-contact transmitting-tube base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
MEDIUM5
Base pins
5
Nominal heater voltage
10 V
Nominal heater current
4 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

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
2400 Ω
Transconductance
0.005 S
Amplification factor
12
Max plate voltage
2000 V
Max screen voltage
400 V
Max plate dissipation
200 W
Max cathode current
150 mA

Published maximum ratings and characteristics promoted from the approved datasheet; mode-specific values preserved as parameters.

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 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • high as

    30 MHz

    high as 30 megacycles. RCA-814 has a ceramic base.

  • D-C Plate Voltage

    1250 V

    D-C Plate Voltage ... 1250 max. Volts

  • D-C Screen Voltage (Grid No. 2)

    300 V

    D-C Screen Voltage (Grid No. 2) . 300 max. Volts

  • D-C Plate Current

    60 mA

    D-C Plate Current... 60 max. Milliamperes

  • Plate Input

    75 W

    Plate Input.-. 75 max. Watts

  • Screen Input

    6.7 W

    Screen Input . 6.7 max. Watts

  • Plate Dissipation

    50 W

    Plate Dissipation . 50 max. Watts

  • D-C Plate Voltage ... 1000

    1250 V

    D-C Plate Voltage ... 1000 1250 Volts

  • D-C Screen Voltage ... 200

    200 V

    D-C Screen Voltage ... 200 200 Volts

  • Peak R-F Grid Voltage.... 50

    50 V

    Peak R-F Grid Voltage.... 50 50 Volts

  • D'C Plate Current . 60

    60 mA

    D'C Plate Current . 60 60 Milliamperes

  • D-C Screen Current . 1.3

    1 mA

    D-C Screen Current . 1.3 1 Milliamperes

  • D-C Grid Current (Approx.) . 1.8

    1.8 mA

    D-C Grid Current (Approx.) . 1.8 1.8 Milliamperes

  • Driving Power (Approx. )t . 0.65

    0.65 W

    Driving Power (Approx. )t . 0.65 0.65 Watt

  • Power Output (Approx.) .. 20

    25 W

    Power Output (Approx.) .. 20 25 Watts

  • D-C Plate Current

    60 mA

    D-C Plate Current--- 60 max. Milliamperes

  • Plate Input

    75 W

    Plate Input .... 75 max. Watts

  • Plate Dissipation

    50 W

    Plate Dissipation .... 50 max. Watts

  • D-C Plate Voltage .. 1000

    1250 V

    D-C Plate Voltage .. 1000 1250 Volts

  • D-C Screen Voltage .. 200

    200 V

    D-C Screen Voltage .. 200 200 Volts

  • Peak R-F Grid Voltage .. 129

    129 V

    Peak R-F Grid Voltage .. 129 129 Volts

  • Peak A-F Grid Voltage . 64

    64 V

    Peak A-F Grid Voltage . 64 64 Volts

  • D'C Plate Current . 60

    60 mA

    D'C Plate Current . 60 60 Milliamperes

  • D-G Screen Current . 2

    1.4 mA

    D-G Screen Current . 2 1.4 Milliamperes

  • D'C Grid Current (Approx.) .-.. 3

    2.8 mA

    D'C Grid Current (Approx.) .-.. 3 2.8 Milliamperes

  • Power Output (Approx.) .... 25

    29 W

    Power Output (Approx.) .... 25 29 Watts

  • D'C Screen Voltage (Grid No. 2)

    300 V

    D'C Screen Voltage (Grid No. 2). 300 Volts

  • D-C Grid Voltage (Grid No. 1)

    -300 V

    D-C Grid Voltage (Grid No. 1)... -300 Volts

  • D-C Or in Cttrrf mt

    10 mA

    D-C Or in Cttrrf mt . 10 Milliamperes

  • Sr.RFFN Tmpht

    6.7 W

    Sr.RFFN Tmpht .. 6.7 Watts

  • Plate Dissipation

    34 W

    Plate Dissipation ...... 34 max. Watts

  • Driving Power (Approx.) .. . 2

    2 W

    Driving Power (Approx.) .. . 2 2 Watts

  • D-C Plate Voltage

    1250 V

    D-C Plate Voltage . 1250 max. Volts

  • D-C Screen Voltace (Grid No. 2)

    300 V

    D-C Screen Voltace (Grid No. 2) . 300 max. Volts

  • D-C Grid Voltage (Grid No. 1)

    -300 V

    D-C Grid Voltage (Grid No. 1). -300 max. Volts

  • D-C Plate Current

    150 mA

    D-C Plate Current.... 150 max. Milliamperes

  • D-C Grid Current

    10 mA

    D-C Grid Current ... 10 max. Milliamperes

  • Plate Input

    180 W

    Plate Input... 180 max. Watts

  • Screen Input

    10 W

    Screen Input. 10 max. Watts

  • Plate Dissipation

    50 W

    Plate Dissipation .. ... 50 max. Watts

  • D-C Plate Voltage .. . 1000

    1250 V

    D-C Plate Voltage .. . 1000 1250 Volts

  • D'C Screen Voltage . . 300

    300 V

    D'C Screen Voltage . . 300 300 Volts

  • Peak R-F Grid Voltage . . 150

    165 V

    Peak R-F Grid Voltage . . 150 165 Volts

  • D-C Plate Current ..... . 150

    144 mA

    D-C Plate Current ..... . 150 144 Milliamperes

  • D-C Screen Current .. . 17.5

    22.5 mA

    D-C Screen Current .. . 17.5 22.5 Milliamperes

  • Grid Resistor .. . 7000

    8000 Ω

    Grid Resistor .. . 7000 8000 Ohms

  • is used, each stated value of grid voltage should be decreased by

    7 V

    is used, each stated value of grid voltage should be decreased by 7 volts and the circuit returns made

  • For high-frequency operation above

    30 MHz

    For high-frequency operation above 30 megacycles, see page 144.

Data set 02

193X Taylor Transmitting

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Filament Voltage

    10 V

    Nominal published value

  • Filament Current

    4 A

    Nominal published value

  • Maximum Operating Plate Voltage

    2000 V

    Class C oscillator / RF power-amplifier service where published

  • Maximum Plate Dissipation

    200 W

    Published maximum rating

  • Plate to Grid,

    13 pF

    Published direct interelectrode capacitance

  • Grid to Filament, mmf

    7 pF

    Published direct interelectrode capacitance

  • Plate to Filament,

    5.5 pF

    Published direct interelectrode capacitance

Characteristics

  • Plate Resistance

    2400 ohm

    Published general characteristic

  • Mutual Conductance

    5000 µS

    Published general characteristic

  • Amplification Factor

    12

    Published general characteristic

Data set 03

1940 Taylor Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Power output

    110 W

    ClassB RF PlateVoltage=2000V

  • Power output

    115 W

    ClassB RF PlateVoltage=2500V

Data set 04

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • HeaterOrFilamentVoltage

    10 V

  • HeaterOrFilamentCurrent

    3.25 A

Other

  • FrequencyForMaximumRatings

    30 MHz

Data set 05

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Transconductance

    3300 µS

Other

  • Maximum Plate Voltage

    1500 V

  • Maximum Screen Voltage

    400 V

  • Maximum Plate Dissipation

    65 W

  • Maximum Cathode Current

    150 mA

  • Full-Input Operating Frequency Maximum

    30 MHz

  • Power Output

    210 W

    ClassC,RF

  • Typical Plate Voltage

    1500 V

    Representative published point

  • Typical Plate Current

    150 mA

    Representative published point