Electronic tube and vacuum tube catalog

Base

—

Socket code

—

Electrical Summary

Heater	12.6 V / 150 mA
Plate	330 V / 1.1 W
Screen	110 V / 1.1 W
Ik max	15.5 mA

Sections

1

High-frequency converter tube for oscillator and mixer service in radio receivers. Its multi-grid structure combines local-oscillator generation and frequency conversion within a single receiving tube.

Base

8-A

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	250 V
Screen	100 V
rP	600,000 Ω
gm	0.5 mA/V

Sections

1

8 pins - IO - International Octal

Heptode converter for superheterodyne receivers, combining local-oscillator and mixer action in one multi-grid structure. Its series-heater characteristics make it well suited to AC/DC radio receiver designs.

Base

—

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 1 W
Screen	300 V / 0.3 W
Ik max	14 mA
rP	650,000 Ω
gm	0.5 mA/V

Sections

1

8 pins - IO - International Octal

GT-envelope heptode oscillator-converter for superheterodyne receivers. Local oscillation and frequency conversion are integrated in one multi-grid structure, with heater characteristics suited to AC/DC series-string radios.

Base

8CT

Socket code

B9A

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 2 W
Screen	150 V / 0.6 W
Ik max	22 mA
rP	1,000,000 Ω
gm	0.95 mA/V
μ	165

Sections

1

9 pins - B9A - Small-button Noval 9-contact

Heptode oscillator-mixer for superheterodyne frequency conversion. It combines local oscillator and mixer action in one multi-grid structure with comparatively strong conversion performance for radio receiver front ends.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω
gm	0.475 mA/V
μ	1

Sections

1

7 pins - B7G - Miniature 7-contact

Heptode oscillator-converter for AC/DC superheterodyne receivers. It integrates local-oscillator and mixer functions in one miniature tube, converting incoming RF signals to the receiver intermediate frequency.

Base

—

Socket code

B7G

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA

Sections

1

7 pins - B7G - Miniature 7-contact

Heptode frequency converter for superheterodyne receiving equipment. Its multi-grid construction combines local oscillator and mixer functions, translating incoming radio-frequency signals to the receiver intermediate frequency.

Base

8RV

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 1 W
Screen	100 V / 0.35 W
Ik max	6 mA
rP	800,000 Ω
gm	0.35 mA/V

Sections

1

8 pins - IO - International Octal

Heptode oscillator-converter for superheterodyne radio receivers. It combines local oscillation and mixing in one multi-grid tube, translating incoming RF signals to the receiver intermediate frequency.

Base

8AD

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V
Screen	100 V
rP	500,000 Ω

Sections

1

8 pins - IO - International Octal

GT-envelope heptode frequency converter for superheterodyne receivers. Local-oscillator and mixer functions are integrated in one tube, with heater characteristics suited to AC/DC series-string radio designs.

Base

8RV

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 1 W
Screen	100 V
rP	500,000 Ω
gm	0.45 mA/V

Sections

1

8 pins - IO - International Octal

Triode-heptode frequency converter for superheterodyne receivers. The triode supplies local oscillation while the heptode performs mixing, integrating oscillator and frequency-changing functions within one envelope for compact radio front ends.

Base

8ADV

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	200 V / 1 W
Screen	100 V
rP	500,000 Ω
gm	0.44 mA/V

Sections

1

8 pins - IO - International Octal

GT-envelope heptode oscillator-converter for superheterodyne receivers. Its multi-grid structure combines local oscillation and mixing, translating incoming radio-frequency signals to the intermediate frequency while providing useful isolation between input and oscillator circuits.

Base

—

Socket code

B7

Electrical Summary

Heater	13 V / 200 mA
Plate	250 V
Screen	100 V

Sections

1

B7 - Medium 7-contact

Variable-mu heptode frequency changer for superheterodyne receivers. Its multi-grid construction combines oscillator and mixer action, translating incoming RF signals to the receiver intermediate frequency while permitting gain control in the converter stage.

Base

8X

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V
Screen	100 V
rP	360,000 Ω
gm	0.55 mA/V

Sections

1

8 pins - IO - International Octal

Heptode oscillator-converter for superheterodyne radio reception. Its multi-grid structure combines local-oscillator and mixer functions in one tube, translating incoming RF signals to intermediate frequency in series-heater receiver designs.

Base

8ALT

Socket code

LOCTAL8

Electrical Summary

Heater	14 V / 160 mA
Plate	200 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω

Sections

1

8 pins - LOCTAL8 - Loctal 8-contact base

Heptode oscillator-converter for superheterodyne receiving equipment. Its multi-grid structure combines local oscillation and mixing in one valve, translating incoming radio-frequency signals to intermediate frequency while maintaining useful isolation between converter circuits.

Base

—

Socket code

IO

Electrical Summary

Heater	4 V / 650 mA
rP	360,000 Ω

Sections

1

8 pins - IO - International Octal

Heptode frequency changer for superheterodyne radio receivers, combining oscillator and mixer action within one multi-grid valve. Manufacturer data specify its conversion characteristics and operating conditions for dedicated receiver frequency-changing service.

Base

—

Socket code

IO

Electrical Summary

Heater	13 V / 200 mA
Plate	250 V
Screen	100 V
rP	360,000 Ω

Sections

1

8 pins - IO - International Octal

Heptode frequency changer for superheterodyne receiver service. Its multi-grid structure integrates local oscillation and mixing, converting incoming radio-frequency signals to the receiver intermediate frequency within a single valve.

Base

—

Socket code

IO

Electrical Summary

Heater	13 V / 150 mA
Plate	250 V
Screen	100 V
rP	360,000 Ω

Sections

1

8 pins - IO - International Octal

Heptode oscillator-converter for superheterodyne radio receivers, combining local oscillation and frequency conversion within one valve. Its series-heater design suits compact AC/DC receiving equipment requiring an integrated frequency-changing stage.

Base

7T

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V / 1.5 W
Screen	100 V / 1 W
rP	600,000 Ω
gm	1.1 mA/V

Sections

1

7 pins

Low-microphonics industrial pentagrid amplifier-modulator equivalent to the 6L7, intended for radio mixing, modulation, and controlled RF amplification.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	18 V / 100 mA
Plate	150 V / 1 W
Screen	110 V / 1.2 W
rP	400,000 Ω
gm	7 mA/V
μ	22

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature dual-control heptode converter for combined mixer and local-oscillator service in superheterodyne receivers. Its multi-grid structure provides useful isolation between RF input, oscillator, and converted-signal circuits in low-current series-heater radio designs.

Base

—

Socket code

B7G

Electrical Summary

Heater	18 V / 100 mA
Plate	150 V / 1 W
Screen	110 V / 1.2 W
Ik max	24 mA
rP	400,000 Ω
gm	0.48 mA/V
μ	22

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature heptode frequency converter combining oscillator and mixer functions in one tube. Electrically related to the 18FX6 but with controlled heater characteristics, it is designed for low-current series-heater superheterodyne receivers.

Base

—

Socket code

B7G

Electrical Summary

Heater	1.2 V / 60 mA
Plate	100 V
Screen	75 V
Ik max	6.5 mA

Sections

1

7 pins - B7G - Miniature 7-contact

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

—

Socket code

B7G

Electrical Summary

Heater	1.2 V / 30 mA
Plate	90 V / 0.3 W
Screen	75 V
Ik max	3 mA

Sections

1

7 pins - B7G - Miniature 7-contact

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

6L

Socket code

UX6

Electrical Summary

Heater	2 V / 60 mA
Plate	180 V
Screen	67.5 V
Ik max	9 mA
rP	500,000 Ω
gm	0.3 mA/V

Sections

1

6 pins - UX6 - Small 6-contact

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

7Z

Socket code

IO

Electrical Summary

Heater	1.4 V / 50 mA
Plate	110 V
Screen	60 V
Ik max	4 mA
rP	600,000 Ω
gm	0.25 mA/V

Sections

1

8 pins - IO - International Octal

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

7Z

Socket code

IO

Electrical Summary

Heater	1.4 V / 50 mA
Plate	110 V
Screen	60 V
Ik max	4 mA
rP	600,000 Ω
gm	0.25 mA/V

Sections

1

8 pins - IO - International Octal

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

7Z

Socket code

IO

Electrical Summary

Heater	1.4 V / 100 mA
Plate	100 V
Screen	55 V
Ik max	6 mA
rP	350,000 Ω
gm	0.35 mA/V

Sections

1

8 pins - IO - International Octal

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

7Z

Socket code

IO

Electrical Summary

Heater	1.4 V / 100 mA
Plate	100 V
Screen	55 V
Ik max	6 mA
rP	350,000 Ω
gm	0.35 mA/V

Sections

1

8 pins - IO - International Octal

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

—

Socket code

B7G

Electrical Summary

Heater	1.4 V / 50 mA
Plate	90 V
Screen	67.5 V
Ik max	5.5 mA
rP	600,000 Ω

Sections

1

7 pins - B7G - Miniature 7-contact

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

6L

Socket code

UX6

Electrical Summary

Heater	2 V / 120 mA
Plate	180 V / 0.3 W
Screen	67.5 V / 0.2 W
Ik max	9 mA
rP	600,000 Ω
gm	0.44 mA/V

Sections

1

6 pins - UX6 - Small 6-contact

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

G-7Z

Socket code

IO

Electrical Summary

Heater	2 V / 120 mA
Plate	180 V / 0.3 W
Screen	67.5 V / 0.2 W
Ik max	9 mA
rP	600,000 Ω
gm	0.44 mA/V

Sections

1

8 pins - IO - International Octal

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

G-7Z

Socket code

IO

Electrical Summary

Heater	2 V / 120 mA
Plate	180 V / 0.3 W
Screen	67.5 V / 0.2 W
Ik max	9 mA
rP	600,000 Ω
gm	0.44 mA/V

Sections

1

8 pins - IO - International Octal

Directly heated 2 V pentagrid frequency converter, using 1C7G-equivalent electrical specifications; octal base and miniature top cap.

Base

G-7Z

Socket code

IO

Electrical Summary

Heater	2 V / 60 mA
Plate	180 V
Screen	67.5 V
Ik max	9 mA
rP	400,000 Ω
gm	0.275 mA/V

Sections

1

8 pins - IO - International Octal

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

7DC

Socket code

B7G

Electrical Summary

Heater	1.4 V / 50 mA
Plate	110 V
Screen	65 V
Ik max	4 mA
rP	650,000 Ω
gm	0.3 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Battery pentagrid converter for portable superheterodyne receivers, combining local-oscillator and mixer functions in one multi-grid tube. Its economical filament minimizes battery drain while providing useful frequency conversion.

Base

—

Socket code

B8G

Electrical Summary

Heater	1.4 V / 50 mA

Sections

1

8 pins - B8G - Loctal 8-contact

Battery heptode frequency changer for portable superheterodyne receivers. Its multi-grid structure combines local oscillation and mixing in one valve, reducing tube count while preserving low filament consumption.

Base

7AT

Socket code

B7G

Electrical Summary

Heater	1.25 V / 50 mA
Plate	100 V / 0.1 W
Screen	75 V / 0.019 W
Ik max	6.5 mA
gm	0.235 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Ruggedized low-power heptode converter for oscillator and mixer service in portable or specialized receiving equipment. Low filament demand and strengthened construction suit demanding battery-powered applications.

Base

7DC

Socket code

B7G

Electrical Summary

Heater	1.4 V / 25 mA
Plate	110 V
Screen	110 V
rP	550,000 Ω

Sections

1

7 pins - B7G - Miniature 7-contact

Extremely low-consumption battery pentagrid converter for portable superheterodyne receivers. Its very low filament current minimizes battery drain while the multi-grid structure combines oscillator and mixer functions.

Base

—

Socket code

B4

Electrical Summary

Heater	2 V / 100 mA
Plate	150 V
Screen	80 V

Sections

1

B4 - European 4-pin base

Cossor battery heptode frequency changer for superheterodyne receivers. Its multi-grid construction combines oscillator and mixer functions while operating from modest battery-receiver supplies.

Base

7CHV

Socket code

B7G

Electrical Summary

Heater	26 V / 70 mA
Plate	300 V
Screen	100 V
rP	1,000,000 Ω
gm	0.475 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Heptode oscillator-converter for superheterodyne receivers using low-current series heater strings. Its multi-grid structure combines local oscillation and mixing with high plate resistance and useful conversion gain.

Base

7CI

Socket code

UX7

Electrical Summary

Heater	2.5 V / 800 mA
Plate	300 V / 1 W
Screen	100 V / 0.3 W
rP	360,000 Ω
gm	0.55 mA/V

Sections

1

7 pins - UX7 - Small 7-contact (0.75-inch pin circle)

Pentagrid oscillator-converter for early superheterodyne receivers. It combines local oscillation and mixing in one multi-grid tube, providing useful conversion gain in early AC-powered radio equipment.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	3.15 V / 600 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω

Sections

1

7 pins - B7G - Miniature 7-contact

Pentagrid oscillator-converter electrically related to the 6BE6, combining local-oscillator and mixer functions for superheterodyne receiving service with a controlled-warm-up series-string heater.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	3.15 V / 600 mA
Plate	330 V / 2.3 W
Screen	150 V
gm	1.9 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Multi-grid heptode for specialized receiving and signal-processing service. Separate control grids permit mixer and converter-type operation, allowing multiple signals or control voltages to influence plate current.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	3.15 V / 600 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω
gm	1.1 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Multi-grid heptode for mixer, modulator, and specialized receiver signal-processing applications. Separate control grids provide independent influence over plate current for versatile frequency-conversion and modulation functions.

Base

—

Socket code

B7G

Electrical Summary

Heater	6.3 V / 200 mA
Plate	135 V
Screen	135 V
Ik max	7 mA

Sections

1

7 pins - B7G - Miniature 7-contact

Western Electric heptode for multi-grid signal-processing and frequency-conversion service. Its electrode structure permits oscillator, mixer, or controlled-amplifier functions within one conventional receiving tube.

Base

—

Socket code

B7

Electrical Summary

Heater	4 V / 1 A
Plate	250 V
Screen	100 V

Sections

1

B7 - Medium 7-contact

Cossor heptode frequency changer for superheterodyne radio receivers. Its multi-grid construction combines local-oscillator and mixer functions, converting incoming RF signals to the receiver intermediate frequency in a single valve.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	4.2 V / 450 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω

Sections

1

7 pins - B7G - Miniature 7-contact

Pentagrid oscillator-converter for superheterodyne receivers, combining local-oscillator and mixer functions for standard broadcast and FM service. Its controlled-warm-up heater is intended for series-string receiving equipment.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	4.2 V / 450 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω
gm	1.1 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Pentagrid gated-amplifier tube designed primarily as a combined sync separator and sync clipper in television receivers. Its multiple control grids permit specialized gating and signal-processing behavior rather than ordinary radio frequency-converter service.

Base

Refer to variations

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω
gm	0.475 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Industrial pentagrid converter for oscillator and mixer service in communications and specialized receiving equipment. Its multi-grid construction provides frequency conversion with high plate resistance and conventional 6.3 V heater operation.

Base

8R

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	300 V
Screen	100 V
rP	1,000,000 Ω

Sections

1

8 pins

Industrial pentagrid converter for oscillator and mixer service in communications or specialized receiving equipment. Its multi-grid construction provides frequency conversion with high plate resistance and conventional operating voltages.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA

Sections

1

Russian heptode frequency-converter receiving tube.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	330 V / 1.1 W
Screen	110 V / 1.1 W
Ik max	14 mA

Sections

1

Chinese heptode frequency changer for superheterodyne radio receivers. Its multi-grid structure combines oscillator and mixer functions, translating incoming RF signals to the receiver intermediate frequency from conventional receiving-equipment supplies.

Base

—

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	330 V
Screen	110 V
gm	0.3 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Russian heptode for oscillator-converter service in radio receiving equipment. Its multi-grid construction combines local oscillation and mixing, translating incoming RF signals to the intermediate frequency from a conventional 6.3 V heater supply.