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Power - Pentode (NOT beam) ·Pentode

802

Versatile transmitting power pentode for AF modulation and RF amplification or oscillation to approximately 80 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
MEDIUM7
Base pins
7
Nominal heater
6.3 V / 900 mA

Description

The RCA 802 is a power pentode for AF amplification/modulation and RF amplification/oscillation, with full-input operation specified to 80 MHz.

Socket description

Medium 7-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
MEDIUM7
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
900 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.00225 S
Max plate voltage
500 V
Max screen voltage
200 V
Max plate dissipation
10 W

Published ratings and characteristics from source 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

1938 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • D-C Plate Voltage- 400

    500 V

    D-C Plate Voltage- 400 500 Volts

  • D-C Screen Voltage - 150

    200 V

    D-C Screen Voltage - 150 200 Volts

  • Driving Power (Approx.) t ... 0.5

    0.18 W

    Driving Power (Approx.) t ... 0.5 0.18 Watt

  • D-C Plate Current

    30 mA

    D-C Plate Current- 30 max. Milliamperes

  • D-C Grid Current

    7.5 mA

    D-C Grid Current - 7.5 max. Milliamperes

  • Plate Input

    15 W

    Plate Input- 15 max. Watts

  • Screen Input

    6 W

    Screen Input - 6 max. Watts

  • Peak R-F Grid Voltage - 125 125

    125 V

    Peak R-F Grid Voltage - 125 125 125 Volts

  • D-C Plate Current . 18 20

    22 mA

    D-C Plate Current . 18 20 22 Milliamperes

  • Screen Resistor .. 9000 10700

    10700 Ω

    Screen Resistor .. 9000 10700 10700 Ohms

  • Plate Input

    15 W

    Plate Input. 15 max. Watts

  • Suppressor Input

    2 W

    Suppressor Input ..... 2 max. Watts

  • D-C Screen Voltage ........ 150

    200 V

    D-C Screen Voltage ........ 150 200 Volts

  • D-C Plate Voltage _ 400 max

    400 V

    D-C Plate Voltage _ 400 max. 400 max. Volts

  • D-C Screen Voltage*** _ 200 max

    200 V

    D-C Screen Voltage*** _ 200 max. 200 max. Volts

  • D-C Grid Voltage (Grid No. 1)--- -200 max

    -200 V

    D-C Grid Voltage (Grid No. 1)--- -200 max. -200 max. Volts

  • D-C Plate Current _ 40 max

    40 mA

    D-C Plate Current _ 40 max. 40 max. Milliamperes

  • D-C Grid Current_____ 7.5 max

    7.5 mA

    D-C Grid Current_____ 7.5 max. 7.5 max. Milliamperes

  • Plate Input_ 16 max

    16 W

    Plate Input_ 16 max. 16 max. Watts

  • Screen Input___ 4 max

    6 W

    Screen Input___ 4 max. 6 max. Watts

  • Plate Dissipation_ 6.7 max

    6.7 W

    Plate Dissipation_ 6.7 max. 6.7 max. Watts

  • D-C Screen Current . 17

    21 mA

    D-C Screen Current . 17 21 Milliamperes

  • D'C Grid Current (Approx.) . 1.5

    6 mA

    D'C Grid Current (Approx.) . 1.5 6 Milliamperes

  • Grid Resistor.. 26700

    20000 Ω

    Grid Resistor.. 26700 20000 Ohms

  • D-C Plate Voltage . 500 max

    500 V

    D-C Plate Voltage . 500 max. 500 max. Volts

  • D-C Screen Voltage*** . 250 max

    200 V

    D-C Screen Voltage*** . 250 max. 200 max. Volts

  • D-C Grid Volt. (Grid No. 1) -200 max

    -200 V

    D-C Grid Volt. (Grid No. 1) -200 max. -200 max. Volts

  • D-C Plate Current . 60 max

    60 mA

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

  • D-C Grid Current.-. 7.5 max

    7.5 mA

    D-C Grid Current.-. 7.5 max. 7.5 max. Milliamperes

  • Plate Input .. 25 max

    25 W

    Plate Input .. 25 max. 25 max. Watts

  • Screen Input .-. 6 max

    6 W

    Screen Input .-. 6 max. 6 max. Watts

  • Plate Dissipation ... 10 max

    10 W

    Plate Dissipation ... 10 max. 10 max. Watts

  • D-C Grid Voltage ... --- -100 -100 -60

    -60 V

    D-C Grid Voltage ... --- -100 -100 -60 -60 Volts

  • D-C Plate Current... 45 45 45

    45 mA

    D-C Plate Current... 45 45 45 45 Milliamperes

  • D-C Screen Current - 22 12 15

    15 mA

    D-C Screen Current - 22 12 15 15 Milliamperes

  • D-C Grid Current (Approx.) 6 2 7

    6 mA

    D-C Grid Current (Approx.) 6 2 7 6 Milliamperes

  • Driving Power (Approx.). 0.9 0.25 0.7

    0.5 W

    Driving Power (Approx.). 0.9 0.25 0.7 0.5 Watt

  • For high-frequency operation above

    30 MHz

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

Data set 02

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

  • Service

    RF amplifier / frequency multiplier / oscillator / modulator

Data set 03

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Maximum Full-Input Frequency

    80 MHz

  • Maximum Reduced-Input Frequency

    100 MHz

Other

  • Plate Voltage Maximum

    600 V

    ICAS