Electronic tube and vacuum tube catalog

Base

9Q

Socket code

B9A

Sections

2

Heater

14 V / 100 mA

Plate

S1: 175 V / 0.8 W · S2: 250 V / 1.5 W

Screen

S2: 0.3 W

Ik max

S1: 6 mA · S2: 10 mA

gm

S1: 2.8 mA/V

μ

S1: 22

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

Rogers 14Y7 triode-hexode radio frequency converter with shared cathode and internally coupled oscillator grid, 14 V 0.1 A heater, and 9Q nine-pin base.

Base

—

Socket code

—

Sections

2

Heater

1.2 V / 60 mA

Plate

S1: 0.25 W · S2: 0.3 W

gm

S1: 1 mA/V · S2: 0.75 mA/V

μ

S1: 25

Russian directly heated triode-hexode frequency converter for low-power battery superheterodyne receivers. A 1.2 V, 60 mA oxide-coated filament powers separate triode oscillator and hexode mixer sections.

Base

—

Socket code

—

Sections

2

Heater

4 V / 1.2 A

rP

S2: 700,000 Ω

Brimar 20A1 triode-hexode radio frequency converter with shared cathode and separate oscillator section.

Base

—

Socket code

B9A

Sections

2

Heater

13 V / 150 mA

rP

S2: 600,000 Ω

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

Brimar 20D2 triode-hexode radio frequency converter with shared cathode and separate oscillator section.

Base

—

Socket code

—

Sections

2

Heater

6.3 V / 300 mA

Plate

S1: 200 V · S2: 250 V

Screen

S2: 100 V

rP

S2: 1,250,000 Ω

8 pins

J. Visseaux 6E8G triode-hexode frequency converter combining a triode local oscillator with a hexode RF mixer for superheterodyne receivers. Uses a 6.3 V, 0.3 A heater and octal base.

Base

—

Socket code

—

Sections

2

Heater

6.3 V / 300 mA

The 6TE8GT is a combined triode-hexode receiving tube intended primarily for frequency conversion with a separate oscillator section. The triode supplies local oscillation while the hexode performs mixing, providing a compact solution for superheterodyne radio receiver circuits.