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Tube Tinker — Electron Tube Database
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Power - Beam (NOT sweep) ·BeamPower

6884

Forced-air-cooled ceramic-metal radial-beam tetrode for UHF power service, with useful output at frequencies reaching approximately 1.2 GHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
26.5 V / 530 mA

Description

High-power beam-power tube for RF, pulse, or transmitting service. The supplied datasheet was reviewed for heater/filament data, maximum ratings, operating conditions, capacitances, pulse/RF data, and thermal limits.

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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
26.5 V
Nominal heater current
530 mA
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
Amplification factor
18
Max plate voltage
1000 V
Max screen voltage
300 V
Max plate dissipation
115 W
Max screen dissipation
4.5 W
Max grid dissipation
1 W

Promoted fields populated from published ratings/characteristics; additional published values retained in TUBE_SECTION_PARAMETER.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • Control Grid to Cathode Capacitance

    13 pF

  • Control Grid to Screen Grid Capacitance

    17.5 pF

Characteristic

  • Cathode Warmup Time Minimum

    60 s

Other

  • Frequency Full-Rated Power Input

    1215 MHz

  • Maximum DC Plate Current

    180 mA

  • Typical Useful Power Output

    80 W

    Frequency=400MHz

  • Typical Useful Power Output

    40 W

    Frequency=1200MHz

Data set 02

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • 80 WATTS CW POWER OUTPUT — published value 1

    80 W

    CW

  • 80 WATTS CW POWER OUTPUT — published value 2

    40 W

    CW

  • Voltage (AC or DC)

    129.2 mA

    Published datasheet value

  • Current at heater volts = 26 5 — published value 1

    26

    Published datasheet value

  • Current at heater volts = 26 5 — published value 2

    5

    Published datasheet value

  • Current at heater volts = 26 5 — published value 3

    0

    Published datasheet value

  • Current at heater volts = 26 5 — published value 4

    54

    Published datasheet value

  • Heater Current — published value 1

    0.48

    Published datasheet value

  • Heater Current — published value 2

    0.6

    Published datasheet value

  • Useful Power Output

    80

    Published datasheet value

  • Note 1: With 26.5 volts ac or do on heater — published value 1

    1

    Published datasheet value

  • Note 1: With 26.5 volts ac or do on heater — published value 2

    26.5

    Published datasheet value

  • ac or do on heater, do plate voltage of 1000 volts, do grid

    1000

    Published datasheet value

  • No.2 voltage of 300 volts, grid-No.l resistor adjustable between

    300

    Published datasheet value

Other

  • Note 6: In a single-tube, grid-driven coaxial-cavity class C

    6

    ClassC; GridDrive

  • zero and 10,000 ohms, do plate current of 180 mA maximum, do + — published value 1

    10 A

    Published datasheet value

  • zero and 10,000 ohms, do plate current of 180 mA maximum, do + — published value 2

    180 mA

    Published datasheet value

  • grid-No.l current of 30 mA maximum, and driver power outputof~

    30 mA

    Published datasheet value