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6KS6

Gated-beam tube combining limiter, discriminator, and audio-voltage amplification for television intercarrier-sound and FM receiver circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7DF
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 300 mA

Description

Beam tube used as a combined limiter, discriminator, and audio-voltage amplifier in intercarrier television and FM receivers.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7DF
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7DF - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal ScreenGroup 7DF1 Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN1K	A	K — CathodeGroup 7DF1 Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN2G1	A	G1 — Control Grid Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN3H	—	H — Heater Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN4H	—	H — Heater Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN5G2	A	G2 — Screen Grid Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN6G3	A	G3 — Suppressor Grid Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF
PIN7P	A	P — Plate (Anode) Source-transcribed; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 129, 7DF

Section ratings

1 physical section, each with unique specifications.

Section 1

Other

X-ray radiationInterelectrode capacitances

Max plate voltage: 300 V
Max screen voltage: 100 V
Max cathode current: 11.5 mA

Gated-beam discriminator. Accelerator-grid ratings and separate grid-1/grid-3 transconductances are preserved as parameters rather than forced into screen/generic-transconductance fields.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Other

Maximum Plate Supply Voltage
330 V
MaximumAcceleratorSupplyVoltage
330 V
MaximumPeakPositiveGrid1Voltage
60 V
Maximum DC Cathode Current
13 mA

Characteristic

Grid1Transconductance
360 uS
Grid3 Transconductance
700 uS

Capacitance

Grid1 To All Capacitance
4.6 pF
Grid3ToAllCapacitance
3.4 pF
Grid1ToGrid3CapacitanceMaximum
0.005 pF

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Other

Plate Current
9 mA
Published in approved 6KS6 target datasheet entry; Section1
Grid-Circuit Resistance
0.5 MΩ
Published in approved 6KS6 target datasheet entry; Section1
Heater Voltage (ac/dc) 3.15 4.2 6.3
12.6 V
Published in approved 6KS6 target datasheet entry; Section1
Heater Current 0.6 0.45 0.3
150 mA
Published in approved 6KS6 target datasheet entry; Section1
age) 11
11 seconds
Published in approved 6KS6 target datasheet entry; Section1
Plate-Supply Voltage
330 V
Published in approved 6KS6 target datasheet entry; Section1
Grid-No.2 Voltage
110 V
Published in approved 6KS6 target datasheet entry; Section1
Grid-No. 1 Voltage, Positive peak value
60 V
Published in approved 6KS6 target datasheet entry; Section1
Cathode Current
13 mA
Published in approved 6KS6 target datasheet entry; Section1
Heater Voltage (ac/dc) 6.3
8.4 V
Published in approved 6KS6 target datasheet entry; Section1
Heater Current 0.6
450 mA
Published in approved 6KS6 target datasheet entry; Section1
Heater Warm-up Time (Average) 11
11 seconds
Published in approved 6KS6 target datasheet entry; Section1
Plate Voltage
330 V
Published in approved 6KS6 target datasheet entry; Section1
Grid Voltage —1
-3 V
Published in approved 6KS6 target datasheet entry; Section1
Plate Resistance (Approx.) 21000
28000 Ω
Published in approved 6KS6 target datasheet entry; Section1
3600
2600 µS
Published in approved 6KS6 target datasheet entry; Section1
Plate Current 1.6
1.6 mA
Published in approved 6KS6 target datasheet entry; Section1
Grid Voltage (Approx.) for plate current of 10 /iA —2.6
-5.5 V
Published in approved 6KS6 target datasheet entry; Section1
Peak
54 mA
Published in approved 6KS6 target datasheet entry; Section1

Capacitance

Internal Shield
3.3 pF
Published in approved 6KS6 target datasheet entry; Section1
Triode Grid to Triode Plate
2.6 pF
Published in approved 6KS6 target datasheet entry; Section1
Triode Grid to Cathode and Heater
3.6 pF
Published in approved 6KS6 target datasheet entry; Section1
Triode Plate to Cathode and Heater
0.26 pF
Published in approved 6KS6 target datasheet entry; Section1
Diode Cathode to All Other Electrodes (Each Diode Unit)
5 pF
Published in approved 6KS6 target datasheet entry; Section1
Diode Plate to Diode Cathode and Heater (Each Diode Unit)
1.9 pF
Published in approved 6KS6 target datasheet entry; Section1
Diode Cathode to Diode Plate and Heater (Each Diode Unit)
4.8 pF
Published in approved 6KS6 target datasheet entry; Section1
Diode Plate to All Other Electrodes (Each Diode Unit)
3 pF
Published in approved 6KS6 target datasheet entry; Section1