Voltage - Triode (single high frequency) vacuum tubes

Triode

Directly heated low-mu high-frequency triode for Class A amplifier service, providing small-signal gain at comparatively high frequencies.

Base

8DN

Socket

Not recorded

Heater

1.25 V

Sections

1

Triode

High-efficiency high-transconductance strap-frame-grid triode designed specifically for UHF oscillator service, with low heater power supporting low temperature, long life, and high stability.

Base

7DK

Socket

Not recorded

Heater

1.6 V

Sections

1

Triode

High-efficiency high-transconductance strap-frame-grid UHF oscillator triode, an A-series DY4 variant with different bulb dimensions and low heater power for long-life stable operation.

Base

7DK

Socket

Not recorded

Heater

1.6 V

Sections

1

Triode

Directly heated high-frequency medium-mu triode for Class A amplification in receiving and general small-signal electronic circuits.

Base

9BG

Socket

B9A

Heater

1.25 V

Sections

1

Triode

Cossor directly heated triode for high-frequency receiver amplification, using a low-power two-volt filament.

Base

Not recorded

Socket

B4

Heater

2 V

Sections

1

Triode

Miniature UHF triode for television-tuner oscillator and amplifier service.

Base

E7-1

Socket

B7G

Heater

2.35 V

Sections

1

Triode

Miniature UHF triode for television-tuner oscillator and amplifier service.

Base

E7-1

Socket

B7G

Heater

2.35 V

Sections

1

Triode

Improved miniature UHF triode for television-tuner oscillator and amplifier service.

Base

Not recorded

Socket

B7G

Heater

2.35 V

Sections

1

Triode

Medium-mu miniature triode used as the RF amplifier in grid-drive VHF television tuner circuits.

Base

7EG

Socket

B7G

Heater

2.35 V

Sections

1

Triode

Directly heated miniature HF amplifier and frequency-converter triode.

Base

Not recorded

Socket

Not recorded

Heater

1.2 V

Sections

1

Triode

Special UHF triode oscillator designed for operation through approximately 300 MHz.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

Triode

UHF triode pulse oscillator designed for grid-pulse or plate-pulse operation through approximately 300 MHz.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

Triode

UHF triode designed for high-frequency oscillator, amplifier, or frequency-multiplier service in television, communications, or specialized RF equipment.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Triode

UHF general-purpose triode for oscillator, amplifier, and frequency-multiplier service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Triode

High-efficiency strap-frame-grid triode for UHF oscillator service, designed for low heater power, long life, and high stability.

Base

7DK

Socket

B7G

Heater

2.05 V

Sections

1

Triode

A-series high-efficiency strap-frame-grid UHF oscillator triode, designed for low heater power, long life, and high stability.

Base

7DK

Socket

B7G

Heater

2.05 V

Sections

1

Triode

Medium-mu miniature triode for UHF oscillator and Class-A amplifier service.

Base

Not recorded

Socket

B7G

Heater

2.35 V

Sections

1

Triode

High-mu miniature RF triode for grounded-grid VHF amplifier service.

Base

Not recorded

Socket

B7G

Heater

2.3 V

Sections

1

Triode

Miniature RF triode for grounded-cathode VHF amplifier service.

Base

Not recorded

Socket

B7G

Heater

2.35 V

Sections

1

Triode

High-mu miniature triode used as an RF amplifier in VHF color and black-and-white television tuners.

Base

7FP

Socket

B7G

Heater

2.35 V

Sections

1

Triode

High-mu VHF RF amplifier triode for low-voltage television-tuner service.

Base

Not recorded

Socket

B7G

Heater

2.3 V

Sections

1

Triode

High-mu frame-grid miniature triode used as a grounded-cathode RF amplifier in VHF television tuners.

Base

7FP

Socket

B7G

Heater

2.3 V

Sections

1

Triode

Remote-cutoff frame-grid triode for low-noise VHF tuner service.

Base

Not recorded

Socket

B7G

Heater

2.35 V

Sections

1

Triode

High-mu frame-grid miniature triode used as a grounded-cathode RF amplifier in VHF television tuners.

Base

7FP

Socket

B7G

Heater

2.3 V

Sections

1

Triode

Miniature triode used as an RF amplifier in VHF color and black-and-white television tuners.

Base

7GM

Socket

B7G

Heater

2.4 V

Sections

1

Triode

Gain-controlled VHF amplifier triode.

Base

Not recorded

Socket

Not recorded

Heater

2.3 V

Sections

1

Triode

Miniature triode used as an RF amplifier in VHF color and black-and-white television tuners.

Base

7GM

Socket

B7G

Heater

2.4 V

Sections

1

Triode

High-mu miniature triode used as an RF amplifier in VHF television tuners.

Base

7FP

Socket

B7G

Heater

2.35 V

Sections

1

Triode

Miniature directly heated high-frequency voltage amplifier triode.

Base

Not recorded

Socket

Not recorded

Heater

2.2 V

Sections

1

Triode

Russian 2S49D (2С49Д) ruggedized indirectly heated subminiature metal-glass UHF triode for decimeter-band oscillation and amplification, with 2.4 V 0.48 A heater.

Base

Not recorded

Socket

Not recorded

Heater

2.4 V

Sections

1

Triode

Series-heater UHF oscillator triode for television receivers.

Base

7DK

Socket

B7G

Heater

2.35 V

Sections

1

Triode

Grounded-grid UHF triode for amplifier service across approximately 50–450 MHz.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Triode

Grounded-grid UHF oscillator triode designed for operation to approximately 750 MHz.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Triode

Special grounded-grid UHF triode designed primarily for operation around 600 MHz.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Triode

UHF television-service triode for amplifier and oscillator applications in television tuner circuits.

Base

7DK

Socket

B7G

Heater

3.15 V

Sections

1

Triode

UHF television-service triode for amplifier and oscillator applications in television tuner circuits.

Base

E7-1

Socket

B7G

Heater

3.2 V

Sections

1

Triode

3AF4B voltage - triode (single high frequency) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

3.2 V

Sections

1

Triode

Grounded-grid UHF triode for amplifier service across approximately 50–450 MHz.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Triode

Grounded-grid UHF oscillator triode designed for operation to approximately 750 MHz.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Triode

Special grounded-grid UHF triode designed primarily for operation around 600 MHz.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Triode

Medium-mu miniature triode used as an RF amplifier in grid-drive VHF television tuner circuits.

Base

7EG

Socket

B7G

Heater

3.15 V

Sections

1

Triode

Planar triode for high-frequency electronic service. Available source material confirms planar construction without establishing a narrower application confidently.

Base

Not recorded

Socket

Not recorded

Heater

6 V

Sections

1

Triode

High-efficiency strap-frame-grid triode for UHF oscillator service, designed for low heater power, long life, and high stability.

Base

7DK

Socket

B7G

Heater

2.9 V

Sections

1

Triode

A-series high-efficiency strap-frame-grid UHF oscillator triode, designed for low heater power, long life, and high stability.

Base

7DK

Socket

B7G

Heater

2.9 V

Sections

1

Triode

Medium-mu miniature triode designed for UHF oscillator service to approximately 1 GHz.

Base

Not recorded

Socket

B7G

Heater

3.2 V

Sections

1

Triode

High-mu frame-grid triode used as an RF amplifier in VHF television tuners.

Base

7FP

Socket

B7G

Heater

2.8 V

Sections

1

Triode

Triode for grounded-cathode RF amplification in VHF television tuners.

Base

Not recorded

Socket

B7G

Heater

2 V

Sections

1

Triode

High-transconductance miniature triode for VHF RF-amplifier service.

Base

Not recorded

Socket

B7G

Heater

3 V

Sections

1