Power - Tetrode (NOT beam) vacuum tubes

Rectifier-Tetrode

Brimar combination tube containing a rectifier section and a power tetrode, using a 117 V series heater. It integrates rectification and output amplification in one envelope for compact mains-powered equipment.

Base

8AV

Socket

IO

Heater

117 V

Sections

2

Tetrode-Tetrode

Indirectly heated double high-frequency tetrode, internally neutralized for push-pull amplification to approximately 225 MHz. Two tetrode sections provide balanced RF power amplification in one envelope.

Base

Not recorded

Socket

B9A

Heater

12.6 V

Sections

2

Tetrode-Tetrode

Internally neutralized double high-frequency tetrode designed for push-pull amplification or frequency-tripler service to approximately 500 MHz. Two RF tetrode sections share one envelope.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Tetrode-Tetrode

Internally neutralized double high-frequency tetrode with center-tapped heater, designed for push-pull amplification or frequency-tripler service to approximately 600 MHz.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Diode-Tetrode

Combined detector diode and power tetrode sharing a common cathode. The tetrode is designed for low-voltage power amplification directly from an automotive battery, while the diode provides signal detection.

Base

9NV

Socket

B9A

Heater

12.6 V

Sections

2

Tetrode

Western Electric thoriated-tungsten transmitting tetrode rated for Class-B RF service with approximately 10 W catalog output. Designed for radio-frequency power amplification.

Base

Not recorded

Socket

MEDIUM4BAYONET

Heater

5 V

Sections

1

Tetrode

Western Electric thoriated-tungsten transmitting tetrode rated for Class-B RF service with approximately 12.5 W catalog output. Designed for radio-frequency power amplification.

Base

Not recorded

Socket

MEDIUM4BAYONET

Heater

7.5 V

Sections

1

Tetrode

Air-cooled transmitting tetrode designed for Class-B RF service. Its construction and operating ratings support radio-frequency power amplification in transmitter equipment.

Base

Not recorded

Socket

J4

Heater

10 V

Sections

1

Tetrode

Air-cooled transmitting tetrode designed for Class-B RF service. Its power construction supports professional radio-frequency amplification rather than receiving-type operation.

Base

Not recorded

Socket

Not recorded

Heater

10 V

Sections

1

Tetrode

Western Electric air-cooled heater-cathode transmitting tetrode designed for RF power service. Its construction supports professional radio-frequency amplifier operation.

Base

Not recorded

Socket

UY5

Heater

6.3 V

Sections

1

Tetrode

Western Electric air-cooled heater-cathode tetrode designed for RF power service. Manufacturer documentation identifies it as a transmitting-class radio-frequency output device.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

Tetrode

High-vacuum beam-power tube designed primarily for blocking-oscillator and pulse-modulator service, also usable as a deflection amplifier where short high-power pulses are required.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

Tetrode

3D21A-B power - tetrode (not beam) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Lewis Electronics 3D23 directly heated thoriated-tungsten multi-electrode RF transmitting power tube, provisionally classified as a tetrode, with 6.3 V 3 A filament and Class C output around 130 W.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

High-efficiency air-cooled transmitting tetrode designed for VHF RF power service, providing substantial output at high radio frequencies.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1

Tetrode

Coplanar-grid power tetrode published under the 4045A designation. Its specialized grid geometry supports high-frequency power operation in professional electronic equipment.

Base

Not recorded

Socket

B5

Heater

5 V

Sections

1

Tetrode

Standard Valves directly heated tetrode with published operating data. Its filamentary construction and power ratings support output-stage service rather than ordinary small-signal amplification.

Base

Not recorded

Socket

UX4

Heater

10 V

Sections

1

Tetrode

Standard Valves directly heated tetrode with manufacturer-published operating data. Its filamentary construction supports power-output applications in professional electronic equipment.

Base

Not recorded

Socket

Not recorded

Heater

10 V

Sections

1

Tetrode

Standard Valves directly heated tetrode with published electrical and operating data. Its power construction supports output-stage service rather than receiving-type small-signal amplification.

Base

Not recorded

Socket

UX4

Heater

10 V

Sections

1

Tetrode

Standard Valves directly heated tetrode variant with manufacturer-published operating data. Its filamentary construction supports power-output applications in professional equipment.

Base

Not recorded

Socket

UX4

Heater

10 V

Sections

1

Tetrode

Standard Valves directly heated tetrode with published operating data. Its power-capable construction is intended for output-stage service rather than ordinary voltage amplification.

Base

Not recorded

Socket

UX4

Heater

10 V

Sections

1

Tetrode

Directly heated dual-grid power-amplifier tetrode designed especially for Class-B audio-output service. Its filamentary construction provides substantial low-frequency power in push-pull amplifier stages.

Base

5C

Socket

UX5

Heater

2.5 V

Sections

1

Tetrode

Fast-heating thoriated-tungsten transmitting tetrode designed for mobile RF service. Its rapid warm-up supports radio-frequency power equipment requiring quick availability.

Base

Not recorded

Socket

SEPTAR5

Heater

6 V

Sections

1

Tetrode

Metal-ceramic RF power tetrode designed for CW and low-duty pulse amplification, oscillator operation, and single-sideband linear amplification. Its compact professional construction supports versatile transmitting service.

Base

Not recorded

Socket

Not recorded

Heater

6 V

Sections

1

Diode-Tetrode

Eimac metal-ceramic quick-heating power tetrode with a built-in control diode for portable and mobile transmitters. The integrated diode permits rapid operation with minimal auxiliary circuitry.

Base

Not recorded

Socket

Not recorded

Heater

2.1 V

Sections

2

Tetrode

High-vacuum pulse tetrode rated around 20 kV plate voltage and 18 A peak current, capable of approximately 300 kW pulse output for modulator service.

Base

Not recorded

Socket

Not recorded

Heater

26 V

Sections

1

Tetrode

Eimac 8252 high-vacuum pulse-modulator tetrode for inductive or resistive loads, rated around 20 kV DC and 18 A peak plate current.

Base

Not recorded

Socket

Not recorded

Heater

26 V

Sections

1

Tetrode

Eimac 8252W high-vacuum pulse-modulator tetrode for inductive or resistive loads, optimized for powerful short-duration pulses at approximately 20 kV plate voltage.

Base

Not recorded

Socket

Not recorded

Heater

26 V

Sections

1

Tetrode

Mazda transmitting tetrode providing roughly 110 W Class C RF output from a 750 V plate supply.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Mazda RF power tetrode designed for transmitting service to approximately 60 MHz.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Dual transmitting tetrode assembly whose parallel sections can produce approximately 220 W Class C RF output.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

1

Tetrode

Mazda power tetrode for substantial power-amplifier and series-regulator applications.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

1

Tetrode

807-family transmitting tetrode for RF amplification, oscillator, modulator, and audio-frequency power service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Beam-power tetrode designed for high-frequency amplifier service, providing a power stage for RF applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Indirectly heated transmitting tetrode for medium-power radio-frequency amplification.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Rugged dual beam tetrode intended for high-frequency amplifier and oscillator service, combining two power sections for demanding RF applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Power tetrode for audio-frequency amplification and high-voltage series-regulator service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode-Tetrode

High-frequency twin power tetrode for RF multiplier, amplifier, and modulator service, with transmitting ratings and forced-air or radiation cooling.

Base

Not recorded

Socket

SEPTAR7

Heater

12.6 V

Sections

2

Tetrode-Tetrode

Twin directly heated RF power tetrode for amplifier, oscillator, modulator, and frequency-multiplier service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

2

Tetrode

Heater-cathode pulse-amplifier tetrode designed for high-current pulse service, with a published peak anode-current rating of 15 amperes into a non-inductive load.

Base

Not recorded

Socket

B4A

Heater

26 V

Sections

1

Tetrode

Water-cooled grounded-grid UHF tetrode for kilowatt-class television power-amplifier and oscillator service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Low-drive high-frequency transmitting tetrode for FM/AM RF amplifiers and screen-modulator stages.

Base

Not recorded

Socket

Not recorded

Heater

10 V

Sections

1

Tetrode

Forced-air-cooled UHF power tetrode.

Base

Not recorded

Socket

Not recorded

Heater

120 V

Sections

1

Tetrode

Twin high-frequency tetrode developed from the 832A for RF amplifier, frequency-multiplier, and modulator service. Its paired tetrode structure supports balanced high-frequency power circuits.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

1

Tetrode

U.S. Navy designation of the 6252 twin high-frequency tetrode, intended for RF amplifier, frequency-multiplier, and modulator service in military communications equipment.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

1

Tetrode

High-gain twin tetrode designed for Class-C amplifier, oscillator, and frequency-multiplier service. Its paired RF sections support compact high-frequency power generation and multiplication.

Base

E9-1

Socket

B9A

Heater

12.6 V

Sections

1

Tetrode

High-gain twin tetrode for Class-C amplifier, oscillator, frequency-multiplier, and modulator service, rated to roughly 200 MHz at full input. Designed for versatile VHF power circuits.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

1

Tetrode

Metal-ceramic four-electrode transmitting tetrode for grounded-grid RF power amplifier or oscillator service through approximately 800 MHz, with an integral forced-air-cooled anode radiator.

Base

9V

Socket

Not recorded

Heater

6.3 V

Sections

1