Voltage - Radio Detector Converter vacuum tubes

Pentode-Triode

Combined triode-pentode for oscillator, mixer, frequency-converter, RF, or IF service in television, communications, or mobile receivers.

Base

Not recorded

Socket

B9A

Heater

13.5 V

Sections

2

Heptode

Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

1

Pentode-Triode

Long-life ruggedized triode-pentode for mixer/RF/AF amplification plus oscillator, multivibrator, and blocking-oscillator service.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

2

Pentode

Classic sharp-cutoff pentode explicitly designed for radio RF amplification and detector service. Its high plate resistance provides substantial gain while manufacturer literature supports detector operation as a primary receiver function.

Base

8F

Socket

UX6

Heater

6.3 V

Sections

1

Octode

Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.

Base

8U

Socket

B8G

Heater

6.3 V

Sections

1

Heptode

Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.

Base

8X

Socket

B8G

Heater

7 V

Sections

1

Heptode

Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1

Diode-Diode-Pentode

Double-diode pentode combining radio detector and control-voltage rectification with RF, IF, or high-gain audio amplification, integrating multiple receiver signal-processing functions in one envelope.

Base

8AE

Socket

B8G

Heater

6.3 V

Sections

3

Pentode-Triode

Combined triode-pentode for oscillator, mixer, frequency-converter, RF, or IF service in television, communications, or mobile receivers.

Base

Not recorded

Socket

B9A

Heater

7 V

Sections

2

Pentode-Triode

Medium-mu triode plus frame-grid sharp-cutoff pentode used as a combined oscillator/mixer and television IF/video amplifier.

Base

Not recorded

Socket

B9A

Heater

8 V

Sections

2

Heptode

Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.

Base

Not recorded

Socket

B8G

Heater

7 V

Sections

1

Diode-Diode-Pentode

Double-diode semi-variable-mu pentode for radio detector plus IF/LF amplifier service. The paired diodes provide detection and AVC while the controlled-cutoff pentode supports gain-regulated receiver amplification.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

3

Pentode

Subminiature strap-frame-grid sharp-cutoff pentode for VHF RF/IF amplification and mixer service. High transconductance and severe-environment construction suit demanding military and professional high-frequency equipment.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Premium subminiature dual-control pentode for amplifier and mixer service in severe-environment equipment. An additional control electrode enables frequency conversion and signal-control functions beyond ordinary pentode amplification.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Sharp-cutoff micro-metal miniature dual-control pentode for Class A amplification and mixer service. Its third grid functions as a second control electrode for frequency conversion and signal-control applications.

Base

Not recorded

Socket

B8D

Heater

6.3 V

Sections

1

Pentode-Triode

Medium-mu triode plus frame-grid pentode for VHF television-tuner oscillator and mixer service.

Base

Not recorded

Socket

B9A

Heater

7.7 V

Sections

2

Rectifier-Rectifier

Four-diode tube for color phase detection, noise-immune color-killer circuits, and FM stereo bridge matrixing. Its multiple diode elements serve signal detection and switching rather than high-current power rectification.

Base

9PQ

Socket

B9A

Heater

8.4 V

Sections

2

Rectifier

Acorn UHF diode for rectifier, detector, and measuring service at very high frequencies. Its compact construction and roughly 850 MHz resonance suit specialized RF detection and measurement.

Base

4BJ

Socket

B7G

Heater

6.3 V

Sections

1

Rectifier

Miniature UHF diode for rectifier, detector, and measuring service. Its compact construction and roughly 700 MHz resonance suit specialized high-frequency detection and measurement circuits.

Base

6BH

Socket

B7G

Heater

6.3 V

Sections

1

Pentode-Triode

Medium-mu triode and sharp-cutoff pentode for combined VHF television oscillator and mixer service.

Base

7AE

Socket

B9A

Heater

9 V

Sections

2

Pentode-Triode

Triode-pentode for VHF frequency-changer service in AC/DC television receivers.

Base

Not recorded

Socket

B9A

Heater

9 V

Sections

2

Pentode-Triode

Triode-pentode for heterodyne oscillator, frequency-converter, and television pulse-amplifier service.

Base

Not recorded

Socket

B9A

Heater

9 V

Sections

2

Pentode-Triode

Medium-mu triode and sharp-cutoff pentode for combined VHF television oscillator and mixer service.

Base

Not recorded

Socket

B9A

Heater

9 V

Sections

2

Pentode-Triode

PCF82/9U8 triode-pentode frequency changer for VHF television receiver service.

Base

9AE

Socket

B9A

Heater

9 V

Sections

2

Pentode-Triode

Medium-mu triode and sharp-cutoff pentode for combined television oscillator and mixer service around a 40-MHz intermediate frequency.

Base

9AE

Socket

B9A

Heater

9.45 V

Sections

2

Tetrode

Directly heated double-grid battery valve using a space-charge grid for low-voltage receiver service, enabling useful amplification from unusually small anode supplies.

Base

A35B-4

Socket

Not recorded

Heater

4 V

Sections

1

Pentode

Mazda high-slope screened pentode for AC mains receivers. Manufacturer documentation supports frequency-changer, detector, and amplifier service, giving it broader functionality than a conventional RF pentode.

Base

Not recorded

Socket

M7A

Heater

4 V

Sections

1

Pentode-Triode

Triode-pentode self-oscillating frequency changer for AC-mains radio receivers.

Base

Not recorded

Socket

M7A

Heater

4 V

Sections

2

Octode

Octode frequency changer for early superheterodyne receivers, combining local-oscillator and mixer functions in one multi-grid valve. Its control characteristic also supports gain regulation in the converter stage.

Base

C35

Socket

P8A

Heater

4 V

Sections

1

Octode

Octode frequency changer for superheterodyne receivers, combining oscillator and mixer action in one multi-grid valve. High output resistance and controllable conversion gain suit automatic gain regulation.

Base

P35

Socket

P8A

Heater

4 V

Sections

1

Tetrode

Philips tetrode oscillator-modulator tube with auxiliary grid, designed to combine RF oscillation and modulation functions within a single multi-grid valve.

Base

Not recorded

Socket

B5

Heater

20 V

Sections

1

Hexode

Hexode oscillator-modulator designed for radio frequency-conversion and modulation service.

Base

Not recorded

Socket

C7A

Heater

20 V

Sections

1

Pentode

All-current high-frequency pentode for RF, IF, audio-frequency amplification, and detector service. High plate resistance provides useful gain across several receiver functions in universal and series-heater equipment.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Hexode

Hexode frequency-changing valve for early superheterodyne receivers, intended for mixer/modulator service with an external oscillator. High output resistance supports useful isolation in all-current series-heater radios.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Octode

Indirectly heated octode frequency changer for AC/DC superheterodyne receivers. It combines oscillator and controllable mixer functions in one multi-grid valve designed for series-string operation.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Octode

Four-beam octode frequency converter for radio receivers, combining oscillator and mixer action within one multi-grid valve. It was designed specifically for superheterodyne frequency-changing service.

Base

Not recorded

Socket

P8A

Heater

13 V

Sections

1

Heptode

Reliable miniature heptode for radio frequency-converter service. High plate resistance and conventional mixer operating conditions make it a dedicated receiving frequency-changing valve.

Base

8Z

Socket

IO

Heater

6.3 V

Sections

1

Pentode

Subminiature pentode for mixer and gated-amplifier service. Specialized control behavior supports frequency conversion and gating rather than ordinary fixed-gain amplification alone.

Base

7A

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Special-quality reliable-cathode CK5784 variant for mixer and gated-amplifier service. It emphasizes dependable operation in professional frequency-conversion, gating, and pulse-related circuitry.

Base

7A

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Reliable Raytheon miniature pentode for mixer and gated-amplifier service. Specialized control behavior supports frequency conversion and gating while modest heater demand suits professional signal-processing equipment.

Base

9P

Socket

B9A

Heater

6.3 V

Sections

1

Diode-Pentode

Directly heated battery diode-pentode combining detector and AGC rectification with audio-frequency voltage amplification. Its economical 1.2 V, 50 mA filament and high-resistance pentode make it well suited to portable radio receivers.

Base

Not recorded

Socket

Not recorded

Heater

1.2 V

Sections

2

Diode-Pentode

Directly heated battery diode-pentode for RF or IF amplification together with signal detection. Its exceptionally economical 1.4 V, 25 mA filament and high-resistance pentode make it particularly suitable for portable receivers.

Base

Not recorded

Socket

Not recorded

Heater

1.4 V

Sections

2

Diode-Pentode

Directly heated battery diode-pentode combining a detector diode with a high-resistance pentode for resistance-coupled audio voltage amplification. Its 1.4 V, 50 mA filament suits low-consumption portable receivers.

Base

Not recorded

Socket

Not recorded

Heater

1.4 V

Sections

2

Diode-Pentode

Low-consumption directly heated diode-pentode for detection and audio-frequency voltage amplification in battery receivers. Its 1.4 V, 25 mA filament makes it especially economical for portable equipment where battery life is important.

Base

B7G

Socket

B7G

Heater

1.4 V

Sections

2

Diode-Diode-Pentode

Detector-pentode receiving valve combining pentode amplification with diode detection for compact radio receiver signal processing and control-voltage generation.

Base

Not recorded

Socket

B7

Heater

Not recorded

Sections

3

Tetrode

Directly heated double-grid valve for superheterodyne receivers, especially portable sets. It can combine detector and local-oscillator functions in a single frequency-changing stage.

Base

Not recorded

Socket

B4

Heater

2 V

Sections

1

Octode

Battery octode frequency changer for portable superheterodyne receivers. Its multi-grid structure combines oscillator and mixer functions, providing useful conversion gain and high plate resistance from low-power battery supplies.

Base

Not recorded

Socket

Not recorded

Heater

1.4 V

Sections

1

Octode

Directly heated octode frequency changer for battery superheterodyne receivers. It combines local-oscillator and mixer action in one multi-grid valve, providing useful conversion gain from comparatively low receiver supply voltages.

Base

Not recorded

Socket

Not recorded

Heater

1.2 V

Sections

1