Power - Pentode Single (NOT beam) (under 10W) vacuum tubes

Pentode

Russian output pentode designed for low-frequency power amplification in long-distance wire-communication equipment. Manufacturer documentation identifies audio-frequency power delivery as its primary function.

Base

Not recorded

Socket

IO

Heater

10 V

Sections

1

Pentode

Dual-purpose power pentode intended for power-amplifier service and capable of series or parallel heater operation. Its flexible heater arrangement supports output-stage use across different receiver supply configurations.

Base

7F

Socket

U7A

Heater

12.6 V

Sections

1

Pentode

High-perveance miniature power pentode designed for audio-output service, offering high power sensitivity and several watts of Class-A output from comparatively low supply voltage.

Base

Not recorded

Socket

B7G

Heater

12.6 V

Sections

1

Pentode

Miniature beam-power pentode designed for audio-amplifier output stages, emphasizing high power sensitivity for record players and other low-voltage consumer equipment.

Base

7CV

Socket

B7G

Heater

12.6 V

Sections

1

Pentode

Russian oscillator pentode designed for high-frequency generation and RF power amplification to approximately 120 MHz. Its defining function is RF generation/output rather than low-frequency audio power service.

Base

Not recorded

Socket

B8G

Heater

12.6 V

Sections

1

Pentode

Output pentode designed for low-frequency power amplification. Manufacturer documentation identifies it as a dedicated audio-frequency power tube rather than a small-signal voltage amplifier.

Base

Not recorded

Socket

Not recorded

Heater

13 V

Sections

1

Pentode

Video-output pentode designed for television receivers using series heater chains. Its output capability is optimized for wideband video drive rather than conventional audio-frequency power amplification.

Base

9AR

Socket

B9A

Heater

15 V

Sections

1

Pentode

RCA RF power pentode designed for transmitting service. Manufacturer documentation provides radio-frequency power ratings appropriate to an RF output tube rather than a receiving-type audio power pentode.

Base

Not recorded

Socket

UX5

Heater

2.5 V

Sections

1

Pentode

Octal power pentode similar to the 6F6, with documented push-pull Class-A1 operation producing about 5 W into a 4 kΩ plate-to-plate load. Designed for audio power-output service.

Base

7S

Socket

IO

Heater

6.3 V

Sections

1

Pentode

Power-amplifier pentode with a 16.5 V heater designed for Class-A audio-output service. Its primary function is low-frequency power delivery to an output load.

Base

9BL

Socket

B9A

Heater

16.5 V

Sections

1

Pentode

Long-life Philips pentode for telephone and communications equipment, with documented preamplifier and output-stage operating conditions.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Pentode

Long-life Philips pentode for telephone equipment, supporting professional preamplifier and output-amplifier service.

Base

Not recorded

Socket

Not recorded

Heater

21 V

Sections

1

Pentode

Special-quality long-life Philips pentode for telephone equipment, usable as either preamplifier or output valve.

Base

Not recorded

Socket

B8G

Heater

18 V

Sections

1

Pentode

Long-life Philips output pentode for telephone and communications equipment, documented for service exceeding 10,000 hours.

Base

Not recorded

Socket

B9A

Heater

18 V

Sections

1

Pentode

Steep-slope long-life output pentode for long-distance communications equipment, also designated EL861.

Base

Not recorded

Socket

B9A

Heater

20 V

Sections

1

Pentode

Miniature high-transconductance power pentode for low-voltage audio-amplifier output stages.

Base

7CV

Socket

B7G

Heater

18.9 V

Sections

1

Pentode

Long-life power pentode for professional wire-communications power-amplifier service.

Base

E9-1

Socket

B9A

Heater

19 V

Sections

1

Pentode

Directly heated power amplifier pentode; low-power classification provisional pending dissipation rating.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Pentode

Directly heated power pentode for Class-A audio output in battery receivers using a 2 V filament.

Base

5K

Socket

UX5

Heater

2 V

Sections

1

Pentode

Directly heated battery power pentode providing roughly 0.3 W Class-A audio output for portable and farm radios.

Base

G-6X

Socket

IO

Heater

2 V

Sections

1

Pentode

Directly heated power pentode for battery receiver output, providing approximately 0.3 W Class-A loudspeaker power.

Base

6X-O-O

Socket

IO

Heater

2 V

Sections

1

Pentode

Tesla directly heated battery output pentode producing about 230 mW Class-A audio power with an economical 1.2 V filament.

Base

Not recorded

Socket

B7G

Heater

1.2 V

Sections

1

Pentode

1P24B power - pentode single (not beam) (under 10w) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

1.2 V

Sections

1

Pentode

1P24BV power - pentode single (not beam) (under 10w) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

1.2 V

Sections

1

Pentode

1P2B power - pentode single (not beam) (under 10w) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode

1P3B power - pentode single (not beam) (under 10w) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode

1P4B power - pentode single (not beam) (under 10w) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

7S

Socket

IO

Heater

25 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

Not recorded

Socket

IO

Heater

25 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

7S

Socket

IO

Heater

25 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

Not recorded

Socket

MEDIUM6

Heater

10 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

2E35

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

2E35

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode

Low-power directly heated RF oscillator and power-amplifier pentode.

Base

Not recorded

Socket

Not recorded

Heater

2.2 V

Sections

1

Pentode

Low-power directly heated HF oscillator and power-amplifier pentode.

Base

Not recorded

Socket

Not recorded

Heater

2.2 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

E7-1

Socket

B7G

Heater

30 V

Sections

1

Pentode

Power pentode designed for both audio/output amplification and radio-frequency power-amplifier service.

Base

Not recorded

Socket

UX5

Heater

10 V

Sections

1

Pentode

Power pentode designed for both audio/output amplification and radio-frequency power-amplifier service.

Base

Not recorded

Socket

UX4

Heater

9 V

Sections

1

Pentode

Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.

Base

Not recorded

Socket

UX5

Heater

7.5 V

Sections

1

Pentode

Power pentode designed for audio-frequency output service with a 35 V, 150 mA heater. Manufacturer data provide ratings, characteristics, and typical operating conditions for receiver audio power stages.

Base

7-pin miniature

Socket

B7G

Heater

35 V

Sections

1

Pentode

Western Electric oxide-filament power pentode with published Class-A output characteristics. Its directly heated construction provides low-frequency power amplification from a filamentary cathode.

Base

Not recorded

Socket

Not recorded

Heater

3 V

Sections

1

Pentode

Western Electric 5603/398A filamentary power pentode amplifier with design-center ratings and documented power-amplifier operating conditions. Its directly heated construction is intended for output-stage service.

Base

B8-11

Socket

IO

Heater

6.5 V

Sections

1

Pentode

Directly heated power pentode for oscillator, Class-A audio, or Class-C RF power service. Series/parallel filament operation supports portable equipment, with documented output around one watt under suitable conditions.

Base

7B8

Socket

B7G

Heater

1.4 V

Sections

1

Pentode

Directly heated instant-start beam-power pentode for portable or mobile RF amplification, oscillation, and frequency multiplication, capable of Class-C output around 100 MHz.

Base

7CY

Socket

B7G

Heater

1.25 V

Sections

1

Pentode

Low-voltage directly heated power pentode designed for Class-A audio output. Its filamentary cathode and modest supply requirements suit battery-operated low-frequency power amplifiers.

Base

6BX

Socket

Not recorded

Heater

1.4 V

Sections

1

Pentode

Output pentode designed for both Class-A audio and RF power amplification. Manufacturer documentation identifies genuine output-stage service across low-frequency and radio-frequency applications.

Base

Not recorded

Socket

B7G

Heater

2.8 V

Sections

1

Pentode

Directly heated pentode for Class-A output and Class-C high-frequency power amplification, with suppressor-grid modulation capability. Its construction supports both audio output and modulated RF power service.

Base

Not recorded

Socket

B7G

Heater

2.8 V

Sections

1

Pentode

Directly heated output pentode, co-designated DL95, designed for low-frequency power amplification. Its filamentary construction suits battery-operated receiver audio-output stages.

Base

7BA

Socket

B7G

Heater

2.8 V

Sections

1