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Power - Beam (NOT sweep) ·BeamPower

8792

High-power beam tube intended for RF transmitting service, with ratings and construction suited to professional communications and broadcast power amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
5.5 V / 17.3 A

Description

RCA-8792* is designed specifically to meet the high linearity and low noise requirements of modern HF, single sideband equipments.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
5.5 V
Nominal heater current
17.3 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
Max plate voltage
3500 V
Max plate dissipation
1500 W

Source-derived section; identical dual beam-power sections compressed where applicable.

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

Other

  • 1000 Watts PEP Output

    1000 W

    1000 Watts PEP Output

  • Full Input to

    400 MHz

    Full Input to 400 MHz Beam Power Tu be

  • it can deliver one kilowatt output at

    20 W

    it can deliver one kilowatt output at 70% efficiency with a gain of better than 20 dB.

  • put, and to UHF, Class B linear service, where it will deliver

    300 W

    put, and to UHF, Class B linear service, where it will deliver 300 watts carrier power output.

  • Voltage® (ac orde) oo v v vn. .. {

    3.75 V

    Voltage® (ac orde) oo v v vn. .. {5.5 typ. V Greatest Diameter. .. ......... (95.3 mm) 3.75 in

  • Grid No

    0.14 pF

    Grid No.1 to Plate® .......... 0.14 pF T L.

  • Grid No

    38 pF

    Grid No.1 to Cathode-Heater .. ... .. 38 pF Seel"'nI‘u ’ d o

  • Plate to Cathode-Heater¢

    250 pF

    Plate to Cathode-Heater¢ .. .. ... .. 0.02 pF al Temperature® ... ........... 250 max. °C

  • Grid No

    2 pF

    Grid No.1to Grid No.2. . . .. ...... 52 pF (Plate, Grid No.1, Grid No.2

  • Grid No

    16 pF

    Grid No.2to Plate ... .......... 16 pF Cathode-Heater, and Heater)

  • Grid No

    250 pF

    Grid No.2 to Cathode-Heater® .. .. .. 1.4 pF Plate Core Temperatured . .. ....... 250 max. °C

  • b por: plate voltage =

    2500 V

    b por: plate voltage = 2500 V d See Dimensional Qutline for temperature measurement

  • grid No

    600 V

    grid No.2 voltage = 600 V points.

  • plate current =

    600 mA

    plate current = 600 mA

  • peak-to-average power ratio of

    30 MHz

    peak-to-average power ratio of 2. In a grid-drive circuit at 30 MHz

  • Maximum CCS Ratings, Absolute-Maximum Values: DC Plate Voltage

    2500 V

    Maximum CCS Ratings, Absolute-Maximum Values: DC Plate Voltage . . . . ... .... 2500 2500 V

  • DC Grid-No

    600 V

    DC Grid-No.2 Voltage .. ...... 600 600 V

  • up to

    400 MHz

    up to 400 MHz

  • DC Grid-No

    61 V

    DC Grid-No.1 Voltageh . ... ... 65 61 V

  • DC GRID-No

    1050 V

    DC GRID-No.2 VOLTAGEY. ....... 1000 max. V Effective RF Load Resistance . . 1050 1050 Q

  • Peak RF Grid Voltage

    47 V

    Peak RF Grid Voltage . . ... ... 50 47 V

  • In a grid-drive citcuit at

    108 MHz

    In a grid-drive citcuit at 108 MHz with an output circuit

  • bandwidth of

    2 MHz

    bandwidth of 2.0 MHz"

  • DCPlate Voltage . . . ... ..o i v v

    3350 V

    DCPlate Voltage . . . ... ..o i v v 3350V

  • DC Grid-No

    2 V

    DC Grid-No.2 Voltage . .. ..o

  • DC PLATE VOLTAGEf

    1 V

    DC PLATE VOLTAGEf........... 3500 max. V DC Grid-No.1 Voltage .. ......cvvvo

  • DC GRID-No

    1000 V

    DC GRID-No.2 VOLTAGES. ........ 1000 max. V

  • DC GRID-No

    0.55 V

    DC GRID-No.1 VOLTAGEK . ....... -300 max. V DCPlateCurrent . ..o vv v v e v vveen 0.55 A

  • Carrier conditions for use with a maximum modulation In a cathode drive circuit at

    400 MHz

    Carrier conditions for use with a maximum modulation In a cathode drive circuit at 400MHz with an output cir-

  • DC PLATE VOLTAGEf ... ... ...,

    500 V

    DC PLATE VOLTAGEf ... ... ..., 3500 max. DC Grid-No.2 Voltage9 ............. 500 V

  • DC Grid-No

    65 V

    DC Grid-No.1 Voltage™ ............. 65 V

  • DC GRID-No

    2 V

    DC GRID-No.2 VOLTAGES. . . ...

  • .. 1000 max. DCPlateCurrent .. ............... 550 mA

    550 mA

    .. 1000 max. DCPlateCurrent .. ............... 550 mA

  • DC PLATE CURRENT

    -10 mA

    DC PLATE CURRENT .......... 700 max. mA DC Grid-No.2 Current. + « .o v oo v vu e -10 mA

  • Class C Television Service Typical Operation in Grid-Drive Circuvit at

    216 MHz

    Class C Television Service Typical Operation in Grid-Drive Circuvit at 216 MHz

  • Synchronizing-level conditions per tube unless other- BandwidthP of

    6 MHz

    Synchronizing-level conditions per tube unless other- BandwidthP of 6.0 MHz

  • wise specified DCPlate Voltage . .. ... v e v v v v v

    2500 V

    wise specified DCPlate Voltage . .. ... v e v v v v v 2500 V

  • Moximum CCS Ratings, Absolute-Maximum Values: DC Grid-No

    500 V

    Moximum CCS Ratings, Absolute-Maximum Values: DC Grid-No.2 Voltage . .. ... cven v 500 V

  • Up to

    1 MHz

    Up to 400 MHz Peak RF Grid-No.1 Voltage:

  • DC PLATE VOLTAGE!

    60 V

    DC PLATE VOLTAGE! ......... 3500 max. V Pedestallevel . ... ............. 60 V

  • DC GRID-No

    1 V

    DC GRID-No.2 VOLTAGES. . ... ... 1000 max. V DC Grid-No.1 Voltage .. . ..o

  • GRID-No

    -40 mA

    GRID-No.2 INPUT ............. 50 max. W DC Grid No.2 Current Pedestal level. . . . . -40 mA

  • Synchronizing level

    5 mA

    Synchronizing level. . . ... ........ 5.0 mA

  • GRID-No

    0 mA

    GRID-No.1 CURRENT ... ........ 200 max. mA Pedestal level . . . .. ............ 00 A

  • € See Section V.C. of

    300 ohm

    € See Section V.C. of 1CE-300. a ten ohm, unbypassed cathode resistor. See also Section

  • “1HEATER VOLTAGE Ej =55V

    55 V

    “1HEATER VOLTAGE Ej =55V

  • GRID No

    2 V

    GRID No.2 VOLTAGE EC2=GOOV

  • |GRID NO

    500 V

    |GRID NO. 2 VOLTAGE E,® 500V

  • 20 = 5.9 OHMS

    5.9 ohm

    20 = 5.9 OHMS

  • Zo =

    13.4 ohm

    Zo = 13.4 OHMS

  • No.2, and grid-No.1 voltages. In typical operation C PRESSURE

    1 V

    No.2, and grid-No.1 voltages. In typical operation C PRESSURE

  • at 1500 watts, plate dissipation, and 225° C plate LEVE L g

    225 W

    at 1500 watts, plate dissipation, and 225° C plate LEVE L g

  • seal temperature,

    60 in

    seal temperature, 29 cfm at 0.35 inches of water 60}

Characteristic

  • factor of

    3.5 MHz

    factor of 1.0 cuit bandwidth of 3.5 MHz"