Voltage - Tetrode vacuum tubes

Tetrode

Russian high-voltage tetrode designed for specialized high-voltage electronic service. Available translated source material supports the high-voltage role without a more specific functional assignment.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Tetrode

Russian tetrode of the 6E5P family. Available manufacturer material confirms tetrode construction and substantial operating capability but does not support a narrower functional category confidently.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Tetrode

Sharp-cutoff tetrode for high-voltage RF amplification in VHF television tuners. Its high output resistance and controlled cutoff suit sensitive front-end service.

Base

7EW

Socket

B7G

Heater

6.3 V

Sections

1

Tetrode

Sharp-cutoff tetrode designed as an RF amplifier in VHF television tuners, providing high-frequency gain for the receiver front end.

Base

E7-1

Socket

B7G

Heater

6.3 V

Sections

1

Tetrode

Ericsson 6EV5/CATV long-life miniature seven-pin sharp-cutoff RF tetrode for dependable cable television distribution amplifiers, specially developed from the 6EV5 for extended CATV service.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Tetrode

Sharp-cutoff tetrode designed specifically for VHF television-tuner RF amplification, providing front-end signal gain at television receiving frequencies.

Base

7FQ

Socket

B7G

Heater

6.3 V

Sections

1

Tetrode

Russian secondary-emission tetrode designed for pulse-operation circuits in stationary equipment, using secondary-emission behavior for specialized high-speed pulse amplification.

Base

B9A

Socket

B9A

Heater

6.3 V

Sections

1

Tetrode

The 6V3P is a Russian secondary-emission tetrode developed for nanosecond pulse amplification. It uses an indirectly heated oxide cathode and additional secondary-emission electrode structures to deliver high-current pulses in specialized electronic equipment, operating from a 6.3-volt, 850-milliampere heater supply.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Russian pulse-amplifier tetrode designed for specialized pulsed electronic circuits, providing controlled high-speed amplification rather than ordinary continuous small-signal service.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

Tetrode

Russian high-frequency tetrode with pentode-like characteristics, designed for high-frequency voltage amplification in receiving and related electronic equipment.

Base

B7G

Socket

B7G

Heater

6.3 V

Sections

1

Tetrode

Russian indirectly heated HF tetrode; typical anode 250 V, 7 mA; printed transconductance 5 Ma/V.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Russian indirectly heated HF tetrode; typical anode 250 V, 7 mA; printed transconductance 5 Ma/V.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Frame-grid broadband tetrode amplifier covering audio through approximately 300 MHz, also usable as an output stage or low-noise triode-connected input amplifier.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Tetrode

Sharp-cutoff VHF tetrode designed for amplifier service in mobile communications equipment, providing high-frequency signal gain in compact communications receivers or transmitters.

Base

7EW

Socket

B7G

Heater

13.5 V

Sections

1

Tetrode

Sharp-cutoff tetrode for mobile-communications amplifier service, co-designated 7717/6CY5, providing VHF signal gain in compact communications equipment.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Tetrode

Directly heated battery tetrode for low-power receiver amplifier service, designed for economical operation from portable low-voltage supplies.

Base

A35-3

Socket

Not recorded

Heater

4 V

Sections

1

Tetrode

Philips Miniwatt screened-grid pentode developed for RF amplification in early high-voltage, low-current heater systems.

Base

Not recorded

Socket

B5

Heater

20 V

Sections

1

Tetrode

Variable-mu tetrode documented in Philips receiving-tube tables, providing controllable amplification characteristics for receiver signal-processing applications.

Base

Not recorded

Socket

B5

Heater

20 V

Sections

1

Tetrode

Philips tetrode documented in receiving-tube tables with published operating and characteristic data; available source material does not support a narrower functional reassignment without speculation.

Base

Not recorded

Socket

B5

Heater

20 V

Sections

1

Tetrode

Philips Miniwatt screened-grid pentode for straightforward high-frequency receiver amplification using a 20 V, 180 mA heater.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Tetrode

Early directly heated Philips screen-grid tetrode for high- and intermediate-frequency amplification, emphasizing high gain and low anode-grid capacitance for receiver RF and IF stages.

Base

Not recorded

Socket

B4

Heater

2 V

Sections

1

Tetrode

Philips tetrode documented in valve tables with published operating and characteristic values; available source material does not support a narrower functional category without speculation.

Base

AS/03S

Socket

Not recorded

Heater

4 V

Sections

1

Tetrode

Guard-ring tetrode electrometer valve with extremely low control-grid current, designed for precision measurement and amplification of exceptionally small electrical currents.

Base

InternationalOctal

Socket

IO

Heater

4 V

Sections

1

Tetrode

Directly heated screen-grid tetrode for high-frequency amplification. Its early screen-grid construction reduces feedback and improves RF gain compared with contemporary triodes.

Base

Not recorded

Socket

Not recorded

Heater

10 V

Sections

1

Tetrode

Cunningham screen-grid tetrode for RF amplification and detector service in radio receivers. Its screened structure improves high-frequency gain and stability.

Base

Not recorded

Socket

UY5

Heater

2.5 V

Sections

1

Tetrode

Cunningham directly heated screen-grid tetrode for RF amplification and detector service. Its early screened construction improves receiver gain and stability.

Base

Not recorded

Socket

UX4

Heater

3.3 V

Sections

1

Tetrode

Cunningham directly heated screen-grid tetrode for RF amplification and detector service in battery-operated receivers. Its low-power filament suits portable equipment.

Base

Not recorded

Socket

UX4

Heater

2 V

Sections

1

Tetrode

Directly heated screened tetrode with low-voltage operating data. Its economical filament and screened construction suit low-power receiving circuits.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Tetrode

Directly heated low-voltage screen tetrode for economical receiving equipment. Available source material confirms screened-tetrode operation without a narrower specialized function.

Base

Not recorded

Socket

Not recorded

Heater

1.5 V

Sections

1

Tetrode

High-efficiency screen-grid tetrode with exceptionally low anode-grid capacitance for high-frequency and intermediate-frequency amplification in DC-mains receivers.

Base

Not recorded

Socket

B4

Heater

16 V

Sections

1

Tetrode

Cossor screen-grid tetrode for receiver amplification. Its screened construction reduces control-grid-to-anode coupling and improves high-frequency stability.

Base

Not recorded

Socket

B5

Heater

16 V

Sections

1

Tetrode

Directly heated electrometer tetrode for measuring extremely small currents. Its low-power filament and high input resistance suit sensitive instrumentation.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Tetrode

Philips indirectly heated tetrode for receiving equipment. Available source material confirms conventional tetrode operation but does not establish a narrower functional category.

Base

Not recorded

Socket

B5

Heater

4 V

Sections

1

Tetrode

Philips indirectly heated tetrode for receiving equipment. Available source material confirms conventional tetrode operation but does not establish a narrower functional category.

Base

Not recorded

Socket

B5

Heater

4 V

Sections

1

Tetrode

Philips variable-mu tetrode for controlled-gain receiver amplification. Its gradual cutoff characteristic supports automatic gain-control applications.

Base

Not recorded

Socket

B5

Heater

4 V

Sections

1

Tetrode

Philips tetrode documented in contemporary valve tables. Available source material confirms tetrode construction and operating data without establishing a narrower functional role.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Tetrode

Philips variable-mu tetrode for controlled-gain receiver amplification. Its gradual cutoff characteristic supports automatic gain-control service.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Tetrode

Philips tetrode for receiving-equipment amplification. Available manufacturer material confirms tetrode construction but does not establish a narrower functional category.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Tetrode

Subminiature directly heated electrometer tetrode for extremely small-current measurement. Its tiny filament demand and high input resistance suit sensitive portable instrumentation.

Base

Not recorded

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode-Tetrode

Combined tetrode and output-pentode tube for detector, AF preamplifier, and audio-output service. Its power pentode section gives the tube a clear output-stage function.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

2

Tetrode

Secondary-emission tetrode for wide-band amplification and phase inversion. Its specialized electrode system provides high gain and signal-processing performance over a broad frequency range.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Tetrode vacuum tube documented for specialized electronic service. Available source material confirms tetrode construction but does not establish a narrower functional category confidently.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Directly heated space-charge-grid electrometer tube for measuring extremely small direct currents. Its specialized grid arrangement provides very high input resistance for precision instrumentation.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Tetrode

Hytron special-purpose tetrode with high amplification factor and moderate plate dissipation, intended for electronic amplification service under the published engineering ratings.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Screen-grid tetrode intended for general receiving, amplification, detection, or special-purpose service as documented by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Tetrode

Output power tetrode designed for receiver audio stages, providing efficient Class-A or Class-AB power amplification from typical receiving-equipment supply voltages.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Tetrode

Variable-mu kinkless high-frequency tetrode for RF and IF amplification, providing controlled cutoff for receiver gain regulation.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

Tetrode

High-slope high-frequency tetrode for wide-band amplification, particularly in television receivers requiring substantial RF or video-frequency gain.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1