Voltage - Pentode High Frequency (single) vacuum tubes

Pentode

All-current high-frequency pentode for RF, IF, and audio-frequency voltage amplification, closely related to the AF7.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Pentode

Raytheon special-purpose RF amplifier pentode for professional high-frequency signal amplification.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Pentode

High-transconductance RF pentode designed for wide-band high-frequency amplifier service to approximately 400 MHz. Ferranti documentation identifies it as a broadband signal tube for demanding RF amplification.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

1

Pentode

Pentode designed for RF amplification to approximately 430 MHz. Philips documentation provides heater data, electrical characteristics, ratings, and section-specific information for high-frequency signal-amplifier service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Philips high-frequency pentode with manufacturer-published operating and characteristic data. Its documented role is HF signal amplification rather than power output, although the available source does not justify a narrower cutoff classification.

Base

Not recorded

Socket

B5

Heater

4 V

Sections

1

Pentode

Philips RF pentode with documented heater data, ratings, characteristics, operating conditions, and capacitances. The source establishes high-frequency signal-amplifier service while also publishing specialized secondary-emission quantities.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

High-transconductance pentode for wideband and high-frequency voltage amplification, providing strong broadband gain and useful signal current.

Base

RIMLOCK

Socket

B8A

Heater

6.3 V

Sections

1

Pentode

Subminiature high-slope RF pentode with specialized suppressor-grid arrangement and internal suppressor diode for compact high-frequency circuitry.

Base

Not recorded

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

Subminiature high-slope RF pentode usable in pentode or triode connection for flexible high-frequency small-signal amplification.

Base

Not recorded

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

Subminiature RF pentode with short suppressor-grid base for specialized miniature high-frequency and signal-control circuitry.

Base

Not recorded

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

Subminiature high-slope RF pentode for fixed-gain high-frequency amplification in space-constrained professional equipment.

Base

B8D/F

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

Subminiature high-slope Mullard RF pentode for fixed-gain high-frequency amplifier stages with moderate heater demand.

Base

B8D/F

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

High-frequency pentode widely used for wideband RF, IF, and television video amplification.

Base

B9A

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Long-life professional RF/IF pentode for dependable continuous high-frequency amplifier service.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Low-current directly heated battery pentode for fixed-gain high-frequency amplification in economical portable receiver circuitry.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Pentode

Directly heated Telefunken battery pentode for high-frequency amplification in portable radio equipment.

Base

Not recorded

Socket

Not recorded

Heater

1.9 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

B9A

Heater

18 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

18 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

18 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

SP6

Heater

12.6 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

SP6

Heater

12.6 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

SP6

Heater

12.6 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

Not recorded

Heater

2.4 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

Not recorded

Heater

2.4 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

Not recorded

Heater

1.9 V

Sections

1

Pentode

Telefunken military pentode designed for high-frequency amplification and related radio service.

Base

Not recorded

Socket

Not recorded

Heater

1.9 V

Sections

1

Pentode

Long-life professional pentode designed for voltage amplification, with high-frequency or wideband service where specified by the manufacturer.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

AC/DC mains high-frequency pentode with published operating data for noise-suppression and automatic-tuning service.

Base

Not recorded

Socket

Not recorded

Heater

22 V

Sections

1

Pentode

Screened high-frequency pentode designed for television HF and IF amplifier stages and also usable as a video-output valve.

Base

Not recorded

Socket

IO

Heater

4 V

Sections

1

Pentode

High-frequency pentode intended for RF or IF amplifier service. Mullard documentation identifies it as a conventional radio-frequency signal tube rather than a power-output or specialized control device.

Base

Not recorded

Socket

B7

Heater

4 V

Sections

1

Pentode

Straight high-frequency pentode designed for RF service in AC/DC receivers and car radios. Mullard documentation places it in radio-frequency signal amplification rather than power-output operation.

Base

Not recorded

Socket

B7

Heater

13 V

Sections

1

Pentode

Automotive high-frequency pentode intended for RF and IF amplifier stages. Tungsram documentation identifies it specifically for car-radio signal amplification, combining high-frequency service with automotive equipment requirements.

Base

Not recorded

Socket

P8A

Heater

6.3 V

Sections

1

Pentode

High-slope pentode designed for HF and IF amplification and for cathode-ray-tube modulation. Its substantial transconductance supports high-frequency signal gain and video-type modulation duties.

Base

Not recorded

Socket

B7

Heater

4 V

Sections

1

Pentode

Pentode designed for high-frequency amplification in AC/DC mains equipment. Mazda documentation identifies it as an HF signal tube suited to transformerless receiver operation rather than power-output service.

Base

Not recorded

Socket

IO

Heater

13 V

Sections

1

Pentode

Battery-operated screened high-frequency pentode. Mazda documentation identifies it for RF signal amplification in portable battery equipment, combining screened pentode construction with low-power supply requirements.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Pentode

Universal indirectly heated high-frequency pentode from Osram. Its manufacturer description identifies broad HF signal-amplifier service rather than a narrowly specialized power, detector, or control application.

Base

Not recorded

Socket

B7

Heater

13 V

Sections

1

Pentode

Pentode designed for RF and IF amplification, with manufacturer ratings for both pentode and triode-connected operation. Its primary function is high-frequency signal amplification rather than power output.

Base

Not recorded

Socket

B7G

Heater

3.15 V

Sections

1

Pentode

Secondary-emitter high-slope pentode designed for wide-band RF amplification. Marconi documentation identifies its specialized secondary-emission construction as a means of obtaining substantial gain and bandwidth in high-frequency circuits.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

High-slope RF pentode designed with high radio-frequency input impedance. Marconi documentation identifies it for high-frequency signal amplification where reduced input loading is an important circuit requirement.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1