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Voltage Radio Detector Converter ·Tetrode-Tetrode

6C9

Sharp-cutoff dual tetrode designed for VHF RF-amplifier and autodyne mixer service in receiver front ends.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
10F
Socket code
B10G
Base pins
10
Nominal heater
6.3 V / 400 mA

Description

Sharp-cutoff dual tetrode used as a VHF RF amplifier and autodyne mixer tube.

Socket description

Decar / Noval+1 10-contact base; center contact added to E9-1

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
10F
Socket code
B10G
Base pins
10
Nominal heater voltage
6.3 V
Nominal heater current
400 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

10F - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
100000 Ω
Transconductance
0.008 S
Max plate voltage
250 V
Max screen voltage
180 V
Max plate dissipation
1.5 W
Max cathode current
20 mA

Two identical tetrode sections; represented once under identical-section compression.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
100000 Ω
Transconductance
0.008 S
Max plate voltage
250 V
Max screen voltage
180 V
Max plate dissipation
1.5 W

Added approved missing second physical tetrode section; RCA specifies per-unit ratings for either plate and both units operating.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Application

  • Primary application

    VHF RF amplifier / autodyne mixer

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Heater Voltage (ac/dc) 6.3

    16.8 V

    Published in approved 6C9 target datasheet entry; Section1

  • Heater Current 0.4

    150 mA

    Published in approved 6C9 target datasheet entry; Section1

  • Plate Voltage

    250 V

    Published in approved 6C9 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Supply Voltage

    180 V

    Published in approved 6C9 target datasheet entry; Section1

  • Either plate

    1.5 W

    Published in approved 6C9 target datasheet entry; Section1

  • Both plates (both units operating)

    2.5 W

    Published in approved 6C9 target datasheet entry; Section1

  • For erid-No.2 voltages up to

    90 V

    Published in approved 6C9 target datasheet entry; Section1

  • For erid-No.2 voltages up to 90 volts

    0.5 W

    Published in approved 6C9 target datasheet entry; Section1

  • For grid-No.2 voltages between 90 and

    180 V

    Published in approved 6C9 target datasheet entry; Section1

Capacitance

  • Internal Shield 4.4

    4.2 pF

    Published in approved 6C9 target datasheet entry; Section1

  • Internal Shield 2.2

    2.2 pF

    Published in approved 6C9 target datasheet entry; Section1

  • Heater to Cathode 4.2

    4.8 pF

    Published in approved 6C9 target datasheet entry; Section1

Characteristic

  • Plate Voltage

    125 V

    Published in approved 6C9 target datasheet entry; Section1

  • Grid-No.2 Voltage

    80 V

    Published in approved 6C9 target datasheet entry; Section1

  • Grid-No. 1 Voltage

    -1 V

    Published in approved 6C9 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    0.1 MΩ

    Published in approved 6C9 target datasheet entry; Section1

  • Plate Current

    10 mA

    Published in approved 6C9 target datasheet entry; Section1

  • Grid-No.2 Current

    1.5 mA

    Published in approved 6C9 target datasheet entry; Section1