Voltage - Dual Triode (similar high frequency) vacuum tubes

Triode-Triode

12DJ8 voltage - dual triode (similar high frequency) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Triode-Triode

Twin triode developed for VHF television tuner service, where its two triode units serve radio-frequency amplifier, oscillator, and mixer functions in high-frequency receiving circuits.

Base

9DE

Socket

B9A

Heater

12.6 V

Sections

2

Triode-Triode

Twin triode intended for high-frequency receiving applications, particularly television tuner oscillator, mixer, and RF functions where compact dual-triode construction is advantageous.

Base

9KT

Socket

B9A

Heater

12.6 V

Sections

2

Triode-Triode

High-frequency twin triode intended for Class-A amplifier service, with two similar medium-mu sections and published interelectrode capacitances suited to radio-frequency operation.

Base

8BW

Socket

Not recorded

Heater

12.6 V

Sections

2

Triode-Triode

Twin triode intended for FM and AM receiver front ends, with service including RF amplification and oscillator-mixer operation in high-frequency tuner circuits.

Base

Not recorded

Socket

B9A

Heater

17.5 V

Sections

2

Triode-Triode

Twin triode designed for VHF tuner service, providing functions for RF amplification, frequency conversion, and local-oscillator operation in television or radio receiving equipment.

Base

E9-1

Socket

B9A

Heater

17 V

Sections

2

Triode-Triode

Sylvania 2B5 directly heated subminiature dual HF triode for voltage amplification to 150 MHz, with selectable 2 V series or 1.2 V parallel filament configuration.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

2

Triode-Triode

Medium-mu dual triode for versatile electronic service from low frequencies through VHF, including amplifier, mixer, oscillator, multivibrator, and clamp circuits.

Base

8CY

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

VHF cascode dual triode, co-designated PCC84, intended for television and radio tuner front ends where its two triodes operate together as a low-noise high-frequency cascode amplifier.

Base

Not recorded

Socket

B9A

Heater

7 V

Sections

2

Triode-Triode

Shielded RF cascode dual triode, co-designated PCC805, designed for VHF tuner service with two matched high-transconductance triodes arranged for cascode amplification.

Base

B9A

Socket

B9A

Heater

7 V

Sections

2

Triode-Triode

Variable-mu VHF cascode dual triode, co-designated PCC806, designed for tuner RF amplification with gain-control capability and high combined cascode transconductance.

Base

Not recorded

Socket

B9A

Heater

7.2 V

Sections

2

Triode-Triode

Medium-mu twin triode with separate cathodes for amplifier, mixer, oscillator and multivibrator service at frequencies extending into UHF, combining compact construction with useful high-frequency characteristics.

Base

E9-1

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Directly heated high-frequency twin triode for low-voltage battery operation, providing two triode units suitable for amplification and push-pull service in portable radio-frequency equipment.

Base

7BE

Socket

OCTAL7

Heater

2.8 V

Sections

2

Triode-Triode

High-transconductance medium-mu twin triode designed for low-noise VHF cascode amplification in television tuners, with low interelectrode capacitance supporting high-frequency operation.

Base

Not recorded

Socket

B9A

Heater

3.5 V

Sections

2

Triode-Triode

Medium-mu twin triode with separate cathodes and series/parallel heater, intended for carrier-telephone and general amplifier, mixer, oscillator, and multivibrator service through VHF frequencies.

Base

E9-1

Socket

B9A

Heater

20 V

Sections

2

Triode-Triode

Medium-mu twin triode intended for VHF television tuners, particularly cascode RF amplification, with additional suitability for push-pull cathode-drive RF amplifier circuits.

Base

9AJ

Socket

B9A

Heater

4.2 V

Sections

2

Triode-Triode

Medium-mu twin triode for VHF television tuner cascode amplification and push-pull cathode-drive RF amplifier service, combining two closely matched high-frequency triode sections.

Base

9AY

Socket

B9A

Heater

4.2 V

Sections

2

Triode-Triode

Twin triode developed for VHF television tuner service, particularly cascode RF amplification where two high-frequency triode sections are used together for useful gain and isolation.

Base

Not recorded

Socket

B9A

Heater

4.5 V

Sections

2

Triode-Triode

Medium-mu twin triode intended for VHF television tuner cascode amplification and push-pull cathode-drive RF amplifier service, providing two high-frequency triode sections in one envelope.

Base

9AJ

Socket

B9A

Heater

4.2 V

Sections

2

Triode-Triode

Dual triode VHF cascode amplifier.

Base

Not recorded

Socket

Not recorded

Heater

4.2 V

Sections

2

Triode-Triode

High-transconductance dual triode designed for VHF amplifier and television-tuner service, providing two triode sections optimized for high-frequency signal amplification.

Base

Not recorded

Socket

B9A

Heater

4.2 V

Sections

2

Triode-Triode

Frame-grid variable-mu twin triode designed for premium television tuners, providing low-noise cascode RF amplification with remote-cutoff behavior useful for gain-controlled VHF front ends.

Base

Not recorded

Socket

B9A

Heater

4 V

Sections

2

Triode-Triode

Frame-grid twin triode designed for VHF cascode amplifier service in television tuners, combining two high-frequency triode sections for sensitive RF front-end amplification.

Base

Not recorded

Socket

B9A

Heater

4.2 V

Sections

2

Triode-Triode

Twin triode designed for cascode RF amplification in VHF television tuners, providing the paired high-frequency triode sections required by the tuner front end.

Base

E9-1

Socket

Not recorded

Heater

4.2 V

Sections

2

Triode-Triode

Frame-grid twin triode, explicitly documented as a former or co-designation of 4KN8, intended for VHF cascode amplifier service in television tuners.

Base

Not recorded

Socket

Not recorded

Heater

4.2 V

Sections

2

Triode-Triode

High-frequency medium-mu double triode intended as a general-purpose amplifier, with Class-A voltage-amplifier operation and documented Class-AB1 push-pull power service.

Base

E9-1

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Ruggedized medium-mu twin triode for dependable high-frequency amplifier and push-pull service, a military or critical-service member of the 2C51/5670 family.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Directly heated subminiature high-mu twin triode designed for push-pull mixer service in the VHF range, providing compact high-frequency frequency-conversion capability.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

1.25 V

Sections

2

Triode-Triode

Medium-mu twin triode designed for cascode VHF tuner amplification below about 300 MHz and for push-pull cathode-drive RF amplifier service.

Base

9AJ

Socket

B9A

Heater

4.7 V

Sections

2

Triode-Triode

Medium-mu twin triode used as a cascode amplifier in VHF television tuners and in push-pull cathode-drive RF amplifier circuits.

Base

9AJ

Socket

B9A

Heater

5.6 V

Sections

2

Triode-Triode

High-frequency low-noise twin triode specifically intended for cascode VHF amplifier service, particularly the sensitive RF front end of television and similar receivers.

Base

Not recorded

Socket

B9A

Heater

5.6 V

Sections

2

Triode-Triode

5BZ7 voltage - dual triode (similar high frequency) electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

5.6 V

Sections

2

Triode-Triode

5ES8 (YCC189) semi-remote-cutoff dual VHF triode for low-noise cascode amplification in television tuners, with 5.6 V 450 mA heater and 9AJ miniature base.

Base

9AJ

Socket

Not recorded

Heater

5.6 V

Sections

2

Triode-Triode

Low-noise twin triode intended for VHF tuner RF, oscillator, and mixer service, providing high-frequency gain and frequency-conversion functions in television receivers.

Base

E7-1

Socket

B12C

Heater

4.7 V

Sections

2

Triode-Triode

Reliable long-life subminiature medium-mu twin triode designed for UHF amplification and severe mechanical environments, with published shock, vibration, and high-acceleration capability.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

2

Triode-Triode

Subminiature high-mu twin triode intended for UHF amplification, combining two compact triode sections for high-frequency electronic equipment where small size is important.

Base

8DG

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

2

Triode-Triode

Ruggedized subminiature twin triode for UHF amplifier service, designed to withstand high shock, vibration, and acceleration while providing compact high-frequency amplification.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

2

Triode-Triode

Subminiature high-mu twin triode intended for UHF amplifier service, offering two compact voltage-amplifying sections for high-frequency equipment.

Base

8DG

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

2

Triode-Triode

Ruggedized subminiature high-mu twin triode for UHF amplification, with published shock, vibration, and acceleration ratings for severe-service electronic equipment.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

2

Triode-Triode

High-transconductance dual triode for VHF amplifiers, push-pull oscillators, and mixer circuits, intended for operation at frequencies extending to roughly 600 MHz.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

2

Triode-Triode

Special-quality high-frequency twin triode, industrial counterpart of the 12AT7 family, designed for long-life reliable amplifier and oscillator service.

Base

E9-1

Socket

B9A

Heater

12.6 V

Sections

2

Triode-Triode

High-frequency twin triode intended for RF amplification and related high-frequency circuitry, combining two triode sections in a miniature envelope.

Base

8CJ

Socket

Not recorded

Heater

6.3 V

Sections

2

Triode-Triode

Common-cathode twin triode designed for high-frequency amplifier, oscillator, and mixer service, with manufacturer data supporting operation to approximately 600 MHz.

Base

E7-1

Socket

B7G

Heater

6.3 V

Sections

2

Triode-Triode

Medium-mu twin triode designed as a cascode VHF amplifier in series-string television receivers, also suitable for push-pull cathode-drive RF amplification.

Base

9AJ

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Medium-mu twin triode designed for cascode VHF amplifier service below approximately 300 MHz, particularly suited to television tuner front ends.

Base

9AJ

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Low-noise twin triode designed for VHF cascode-amplifier service, combining high transconductance and moderate gain for sensitive television tuner RF stages.

Base

9AJ

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Medium-mu twin triode designed for low-noise VHF cascode and RF amplification in television tuners, with operating characteristics optimized for high-frequency reception.

Base

9AJ

Socket

B9A

Heater

6.3 V

Sections

2

Triode-Triode

Twin triode intended specifically for VHF cascode amplification, widely suited to television tuner RF front ends and related high-frequency amplifier circuits.

Base

9AJ

Socket

B9A

Heater

6.3 V

Sections

2