Electronic tube and vacuum tube catalog

Base

8U

Socket code

B8G

Sections

1

Heater

6.3 V / 320 mA

Plate

250 V / 1 W

Screen

100 V / 0.3 W

Ik max

13 mA

rP

700,000 Ω

gm

0.55 mA/V

8 pins - B8G - Loctal 8-contact

Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.

Base

C35

Socket code

P8A

Sections

1

Heater

4 V / 650 mA

Plate

200 V

Screen

90 V

Ik max

10 mA

rP

1,900,000 Ω

gm

0.6 mA/V

8 pins - P8A - European 8-pin side-contact base

Octode frequency changer for early superheterodyne receivers, combining local-oscillator and mixer functions in one multi-grid valve. Its control characteristic also supports gain regulation in the converter stage.

Base

P35

Socket code

P8A

Sections

1

Heater

4 V / 650 mA

Plate

250 V / 0.5 W

Screen

300 V / 0.3 W

Ik max

10 mA

rP

1,600,000 Ω

gm

0.6 mA/V

8 pins - P8A - European 8-pin side-contact base

Octode frequency changer for superheterodyne receivers, combining oscillator and mixer action in one multi-grid valve. High output resistance and controllable conversion gain suit automatic gain regulation.

Base

—

Socket code

P8A

Sections

1

Heater

13 V / 200 mA

Plate

200 V / 0.5 W

Screen

90 V / 0.3 W

Ik max

10 mA

rP

1,500,000 Ω

gm

0.6 mA/V

8 pins - P8A - European 8-pin side-contact base

Indirectly heated octode frequency changer for AC/DC superheterodyne receivers. It combines oscillator and controllable mixer functions in one multi-grid valve designed for series-string operation.

Base

—

Socket code

P8A

Sections

1

Heater

13 V / 200 mA

Plate

300 V / 1 W

Screen

150 V

Ik max

23 mA

gm

4 mA/V

8 pins - P8A - European 8-pin side-contact base

Four-beam octode frequency converter for radio receivers, combining oscillator and mixer action within one multi-grid valve. It was designed specifically for superheterodyne frequency-changing service.

Base

—

Socket code

—

Sections

1

Heater

1.4 V / 50 mA

Plate

135 V / 0.3 W

Ik max

5 A

Battery octode frequency changer for portable superheterodyne receivers. Its multi-grid structure combines oscillator and mixer functions, providing useful conversion gain and high plate resistance from low-power battery supplies.

Base

—

Socket code

—

Sections

1

Heater

1.2 V / 50 mA

Plate

135 V

Screen

30 V

Directly heated octode frequency changer for battery superheterodyne receivers. It combines local-oscillator and mixer action in one multi-grid valve, providing useful conversion gain from comparatively low receiver supply voltages.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 200 mA

Plate

400 V

Screen

400 V / 0.3 W

Ik max

10 mA

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

—

Socket code

P8A

Sections

1

Heater

6.3 V / 200 mA

Plate

300 V / 1 W

Ik max

12 mA

gm

0.9 mA/V

8 pins - P8A - European 8-pin side-contact base

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 200 mA

Screen

150 V

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

—

Socket code

IO

Sections

1

Heater

6.3 V / 200 mA

Plate

250 V / 1 W

Screen

125 V / 0.3 W

Ik max

12 mA

rP

2,000,000 Ω

gm

0.55 mA/V

8 pins - IO - International Octal

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

SideContact

Socket code

B7

Sections

1

Heater

13 V / 200 mA

Plate

200 V

Screen

90 V

7 pins - B7 - Medium 7-contact

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

British7Pin

Socket code

B7

Sections

1

Heater

13 V / 200 mA

Plate

200 V

Screen

90 V

7 pins - B7 - Medium 7-contact

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

British7Pin

Socket code

B7

Sections

1

Heater

2 V / 100 mA

Plate

150 V

Screen

150 V

7 pins - B7 - Medium 7-contact

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

British7Pin

Socket code

B7

Sections

1

Heater

2 V / 130 mA

Plate

150 V / 0.5 W

Screen

150 V / 0.6 W

Ik max

11 mA

rP

10,000,000 Ω

gm

0.27 mA/V

7 pins - B7 - Medium 7-contact

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Base

P35(37)

Socket code

—

Sections

1

Heater

2 V / 130 mA

rP

2,500,000 Ω

gm

0.27 mA/V

Directly heated battery octode for superheterodyne frequency conversion. Its multi-grid structure combines oscillator-assisted mixing with very high plate resistance, while the low-current filament minimizes consumption in portable receivers.

Base

—

Socket code

IO

Sections

1

Heater

2 V / 130 mA

8 pins - IO - International Octal

Directly heated variable-mu octode frequency changer for battery superheterodyne receivers covering medium, long, and short waves. Its controllable conversion characteristic supports receiver gain control while preserving economical filament consumption.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 200 mA

Plate

250 V

Screen

225 V

Tungsram octode frequency changer for superheterodyne receivers. Its multi-grid structure combines local oscillation and mixing within one valve, reducing the receiver front end to a single conversion stage.

Base

—

Socket code

—

Sections

1

Heater

2 V / 130 mA

Battery-operated octode frequency changer for portable superheterodyne receivers. Its multi-grid structure combines oscillator and mixer functions while maintaining economical heater consumption.