Voltage - Pentode Remote Cutoff (single) vacuum tubes

Pentode

Variable-mu RF pentode amplifier with remote-cutoff characteristics. Designed for Class A receiver service, its extended-control characteristic supports automatic volume control while maintaining high-frequency signal amplification.

Base

8F

Socket

UX6

Heater

6.3 V

Sections

1

Pentode

Brimar variable-mu RF pentode designed for radio-frequency amplifier service. Its gradual cutoff characteristic provides controlled receiver gain under automatic-volume-control operation.

Base

Not recorded

Socket

UX6

Heater

6.3 V

Sections

1

Pentode

Single-ended remote-cutoff RF pentode using Lock-In construction. Designed for radio-frequency amplifier service, it combines variable-gain operation with short-lead mechanical construction.

Base

8V

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Single-ended metal triple-grid super-control variable-mu amplifier pentode. Its extended-control characteristic is designed for smooth gain regulation in receiver signal stages.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Lock-In semi-remote-cutoff pentode voltage amplifier with moderately high transconductance, low interelectrode capacitances, and economical heater power. Its controlled characteristic supports variable-gain signal amplification.

Base

8V

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Single-ended Lock-In remote-cutoff pentode for RF or IF service in AC, AC/DC, and automobile receivers. Its variable-mu characteristic provides controlled gain across diverse receiver power systems.

Base

8V

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Lock-In semi-remote-cutoff pentode suitable for RF or television service. Its rugged short-lead construction combines controlled-gain high-frequency amplification with improved mechanical stability.

Base

8V

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Toshiba rugged semi-remote-cutoff micro-metal RF pentode. Its compact metal construction combines variable-gain high-frequency amplification with mechanical durability for demanding electronic equipment.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Seven-pin miniature remote-cutoff UHF pentode electrically similar to type 956. Designed for controlled-gain ultra-high-frequency amplification, it combines miniature construction with variable-mu operation.

Base

7BD

Socket

B7G

Heater

6.3 V

Sections

1

Pentode

Acorn remote-cutoff pentode designed for high-frequency amplifier service to approximately 430 MHz. Its compact acorn construction and variable-mu characteristic provide controlled gain at frequencies extending well into the VHF range.

Base

5BB

Socket

ACORN7

Heater

6.3 V

Sections

1

Pentode

Brimar variable-mu RF pentode designed for controlled radio-frequency amplification. Its extended-control characteristic permits automatic gain regulation in receiver signal stages as incoming signal strength changes.

Base

Not recorded

Socket

M7A

Heater

4 V

Sections

1

Pentode

Brimar variable-mu RF pentode for controlled high-frequency amplification. Its gradual cutoff characteristic supports automatic gain regulation in receiver RF or IF signal stages.

Base

Not recorded

Socket

B9A

Heater

13 V

Sections

1

Pentode

Miniature variable-mu RF pentode designed for compact RF and IF amplifier service. Its controlled transfer characteristic combines variable gain with small physical size for receiver applications.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

High-slope Brimar variable-mu RF pentode designed for television and FM IF stages using automatic gain control. It combines substantial transconductance with controlled cutoff for wideband gain-regulated amplification.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Mazda screened high-frequency pentode for conventional small-signal RF voltage amplification in transformer-powered AC mains receivers.

Base

Not recorded

Socket

M7A

Heater

4 V

Sections

1

Pentode

Indirectly heated high-frequency pentode designed for fixed-gain RF and IF amplification with high plate resistance.

Base

C35

Socket

B5

Heater

4 V

Sections

1

Pentode

Indirectly heated variable-mu high-frequency pentode designed for gain-controlled RF and IF amplifier service. Its extended-control characteristic provides smooth automatic gain regulation in receiver signal stages.

Base

P30

Socket

P8A

Heater

4 V

Sections

1

Pentode

Variable-mu pentode documented in manufacturer tube-table data. Its controlled characteristic identifies it as a gain-regulated signal amplifier, although the available source provides limited application detail beyond the published electrical values.

Base

Not recorded

Socket

Not recorded

Heater

20 V

Sections

1

Pentode

Remote-cutoff variable-mu pentode using a 4 V heater and providing a wide control range of anode current and transconductance. Its extended characteristic is designed for smoothly controlled signal amplification.

Base

Not recorded

Socket

P8A

Heater

4 V

Sections

1

Pentode

All-current variable-control RF pentode designed for receiver stages requiring strong gain regulation from relatively small grid-bias changes. Its controlled characteristic supports effective automatic volume control.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Pentode

All-current variable-mu pentode explicitly associated with the AF3 regulating-pentode family. Its extended-control characteristic is intended for automatic gain regulation in receiver high-frequency signal stages.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Pentode

Miniature remote-cutoff RF pentode documented under the CV454 service designation. Its variable-mu characteristic supports controlled high-frequency amplification in compact receiving or professional electronic equipment.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Telefunken directly heated variable-mu pentode designed for RF and IF amplification in battery receivers. Its filamentary cathode combines low-power portable operation with automatic gain-control capability.

Base

Not recorded

Socket

Not recorded

Heater

1.2 V

Sections

1

Pentode

Variable-mu pentode designed for high-frequency and intermediate-frequency amplification. Philips documentation provides filament data, ratings, characteristics, capacitances, and operating conditions for controlled-gain receiver service.

Base

OCTAL

Socket

IO

Heater

1.4 V

Sections

1

Pentode

Variable-mu pentode designed for high-, intermediate-, and low-frequency amplification. Its extended-control characteristic provides variable gain across several signal-frequency stages while retaining battery-compatible directly heated construction.

Base

Not recorded

Socket

IO

Heater

1.2 V

Sections

1

Pentode

Mullard variable-mu RF pentode designed for controlled RF or IF amplifier service. Its gradual cutoff characteristic supports automatic gain regulation in receiver signal stages.

Base

Not recorded

Socket

IO

Heater

1.4 V

Sections

1

Pentode

Directly heated variable-mu voltage pentode designed for RF amplification. Its low-power filament and gradual cutoff characteristic support controlled gain in portable battery-operated high-frequency equipment.

Base

B7G

Socket

B7G

Heater

1.4 V

Sections

1

Pentode

Miniature battery RF pentode for IF amplification, frequency conversion, and self-oscillating mixer service. Its 1.4 V, 25 mA filament provides economical converter operation for compact portable superheterodyne receivers.

Base

Not recorded

Socket

B7G

Heater

1.4 V

Sections

1

Pentode

Cossor pentode documented with complete construction, technical, and operating information. Its placement in this remote-cutoff population is retained conservatively, as the available extracted description does not independently expose stronger application wording.

Base

Not recorded

Socket

B7

Heater

16 V

Sections

1

Pentode

Cossor pentode documented with construction, technical data, operating recommendations, and application notes. Available extracted material does not establish a stronger functional identity than its existing variable-gain pentode grouping.

Base

Not recorded

Socket

B7

Heater

16 V

Sections

1

Pentode

Variable-mu pentode documented in Philips valve-table data. Published operating and characteristic values support controlled-gain signal amplification, although the surviving source provides limited explicit application wording.

Base

Not recorded

Socket

B5

Heater

4 V

Sections

1

Pentode

Premium variable-slope high-frequency pentode designed for mobile and industrial service. Amperex documentation combines controlled-gain HF amplification with premium construction for demanding professional applications.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Remote-cutoff pentode designed for RF, IF, and AF amplification. Its extended-control characteristic permits gain regulation across several signal-frequency stages, making it a versatile controlled-gain amplifier.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Low-noise remote-cutoff RF pentode designed for sensitive controlled-gain high-frequency amplification. It combines reduced noise with a gradual cutoff characteristic for receiver stages requiring both sensitivity and automatic gain regulation.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Frame-grid variable-mu pentode designed for television IF and wideband gain-control stages. Its frame-grid construction provides high transconductance while the extended-control characteristic enables effective automatic gain regulation.

Base

9AQ

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Variable-mu RF pentode for RF or IF voltage amplification in AC or AC/DC mains equipment. Its extended-control characteristic supports automatic gain regulation in transformerless receiver circuits.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Variable-mu RF pentode with sliding-screen characteristics for controlled RF or IF amplification. Its specialized control behavior supports smooth gain regulation across changing receiver signal levels.

Base

OCTAL

Socket

IO

Heater

6.3 V

Sections

1

Pentode

Variable-mu voltage-amplifier pentode designed for RF and IF stages with automatic gain control. Its extended characteristic provides controlled receiver gain while maintaining useful high-frequency amplification.

Base

RIMLOCK

Socket

B8A

Heater

6.3 V

Sections

1

Pentode

Philips variable-mu pentode for gain-controlled high-frequency RF and IF amplification in radio receivers.

Base

Not recorded

Socket

P8A

Heater

6.3 V

Sections

1

Pentode

Mullard subminiature variable-mu RF pentode for compact gain-controlled high-frequency amplifier stages.

Base

Not recorded

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

Mullard subminiature variable-mu RF pentode for controlled high-frequency amplification in miniature professional receiver equipment.

Base

Not recorded

Socket

WIRE8

Heater

6.3 V

Sections

1

Pentode

Low-noise variable-transconductance RF selectode for sensitive gain-controlled receiver input stages.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Long-life high-slope remote-cutoff RF pentode for professional gain-controlled communications amplifiers.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Long-life remote-cutoff pentode for stable professional RF and IF amplification with automatic gain control.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Remote-cutoff audio-frequency pentode designed for electrically controlled variable-gain amplification and compression circuits.

Base

NOVAL

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Variable-mu high-frequency pentode for RF and IF amplification with automatic gain control.

Base

B9A

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Variable-mu pentode for gain-controlled RF and intermediate-frequency amplification with substantial signal capability.

Base

NOVAL

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Variable-transconductance pentode for RF/IF amplification and resistance-coupled audio service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1