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Power - Beam (NOT sweep) ·BeamPower

7558

Industrial beam-power tube electrically identical to 7551 except heater ratings, designed for RF amplification, oscillation, and frequency multiplication through 175 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9LK
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 800 mA

Description

Industrial beam power tube electrically identical to 7551 except heater ratings, for RF amplification, oscillation, and multiplication to 175 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
9LK
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
800 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9LK - 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
30000 Ω
Transconductance
0.0053 S
Amplification factor
8.7
Max plate voltage
375 V
Max screen voltage
300 V
Max plate dissipation
12 W
Max screen dissipation
2 W
Max cathode current
80 mA

Published electrical section from supplied RCA data sheet.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater or filament voltage

    6.3 V

    Published nominal value

  • Heater or filament current

    800 mA

    Published nominal/aggregate value

  • Transconductance

    5300 µS

    Published operating characteristic

Other

  • Push-pull AF power output

    20.5 W

    ClassAB; PushPull

  • Maximum frequency

    175 MHz

    Published

Data set 02

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    450 mA

  • MaximumOperatingFrequency

    175 MHz

    Approximate/useful limit

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    800 mA

  • Characteristic plate voltage

    250 V

  • Characteristic grid2 voltage

    250 V

  • Transconductance

    5300 uS

Other

  • Plate voltage maximum CCS Class C

    250 V

    ClassC

  • Plate voltage maximum ICAS Class C

    300 V

    ClassC

  • Grid2 voltage maximum

    250 V

  • Grid1 voltage minimum

    -125 V

  • Plate dissipation maximum CCS

    8 W

    ClassC

  • Plate dissipation maximum ICAS

    12 W

    ClassC

  • Typical Class-C plate voltage

    300 V

    ClassC

Application

  • Application

    RF power amplifier / frequency multiplier / AF amplifier

Data set 04

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater voltage

    6.3 V

  • Heater current

    800 mA

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Grid voltage

    -18 V

    ClassA

  • Plate current

    40 mA

    ClassA

  • Screen current

    3 mA

    ClassA

  • Maximum plate voltage

    375 V

  • Maximum screen voltage

    300 V

  • Maximum plate dissipation

    12 W

    ICAS

  • Push-pull power output

    20.5 W

    ClassAB1;TwoTubes

  • RF useful power output

    10 W

    ClassC;175MHz

Characteristic

  • Transconductance

    5300 uS

    ClassA

  • Screen-to-control-grid mu factor

    8.7

Capacitance

  • Grid-to-plate capacitance

    0.15 pF

Data set 05

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater voltage nominal

    6.3 V

  • Heater current nominal

    800 mA

  • Voltage (AC or DC1

    6.3 %

    Published source row

  • Voltage (AC or DC1 (value 2)

    5 %

    Published source row

  • Current

    800 mA

    Published source row

  • DC PLATE VOLTAGE

    300 V

    Published source row

  • DC PLATE VOLTAGE (value 2)

    300 V

    Published source row

  • VOLTAGE

    250 V

    Published source row

  • VOLTAGE (value 2)

    250 V

    Published source row

  • VOLTAGE

    -125 V

    Published source row

  • VOLTAGE (value 2)

    -125 V

    Published source row

  • DC PLATE CURRENT

    70 mA

    Published source row

  • DC PLATE CURRENT (value 2)

    80 mA

    Published source row

  • DC GRID-No

    2 mA

    Published source row

  • DC GRID-No (value 2)

    15 mA

    Published source row

  • DC GRID-No (value 3)

    15 mA

    Published source row

  • DC GRID-No.l CURRENT

    5 mA

    Published source row

  • DC GRID-No.l CURRENT (value 2)

    5 mA

    Published source row

  • GRID-No

    2 W

    Published source row

  • GRID-No (value 2)

    2 W

    Published source row

  • GRID-No (value 3)

    2 W

    Published source row

  • PLATE DISSIPATION

    10 W

    Published source row

Capacitance

  • Plate Voltage

    250 V

    Published source row

  • Grid-No

    2 V

    Published source row

  • Grid-No (value 2)

    250 V

    Published source row

  • Grid-No.l Voltage

    -18 V

    Published source row

  • Mu-Factor, Grid No

    2

    Published source row

  • Mu-Factor, Grid No (value 2)

    8.7

    Published source row

  • Transconductance

    5300 µS

    Published source row

  • Plate Current

    40 mA

    Published source row

  • Grid-No

    2 mA

    Published source row

  • Grid-No (value 2)

    3 mA

    Published source row

  • DC PLATE VOLTAGE

    300 V

    Published source row

  • n DC GRID-No

    2

    Published source row

  • MAX.-SIGNAL GRID-No

    2 W

    Published source row

  • MAX.-SIGNAL GRID-No (value 2)

    2 W

    Published source row

  • PLATE DISSIPATION

    10 W

    Published source row

  • ~~ Plate Voltage

    300 V

    Published source row

  • Grid-No

    2 V

    Published source row

  • Grid-No (value 2)

    250 V

    Published source row

  • s• Grid-No.l Voltage§

    -21 V

    Published source row

  • Peak AF Grid-No.l-to-Grid-No.l Voltage

    40 V

    Published source row

  • ero-Signal DC Plate Current

    40 mA

    Published source row

  • •x.-Signal DC Plate Current

    125 mA

    Published source row

  • ero-Signal DC Grid-No

    2 mA

    Published source row

  • ero-Signal DC Grid-No (value 2)

    2 mA

    Published source row

  • •x.-Signal DC Grid-No

    2 mA

    Published source row

  • •x.-Signal DC Grid-No (value 2)

    14 mA

    Published source row

  • ffective Load Resistance (Plate to plate)

    5000 ohm

    Published source row

  • otal Harmonic Distortion

    5

    Published source row

  • ax.-Signal Power Output (Approx.)

    20 W

    Published source row

  • ax.-Signal Power Output (Approx.) (value 2)

    5 W

    Published source row

  • Grid-No.l-Circuit Resistance

    0 Mohm

    Published source row

  • Grid-No.l-Circuit Resistance (value 2)

    1 Mohm

    Published source row

Data set 06

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • Grid No.1 to Plate Capacitance

    0.15 pF

    Maximum

  • Grid No.1 Input Capacitance

    10 pF

  • Plate Output Capacitance

    5.5 pF

Characteristic

  • Class A Plate Voltage

    250 V

    ClassA

  • Class A Screen Voltage

    250 V

    ClassA

  • Class A Plate Current

    40 mA

    ClassA

  • Class A Screen Current

    3 mA

    ClassA

Other

  • RF DC Plate Current

    80 mA

    ClassC;ICAS;175MHz

  • RF DC Screen Current

    15 mA

    ClassC;ICAS;175MHz

  • Useful Power Output

    10 W

    ClassC;ICAS;175MHz