Voltage Radio Detector Converter vacuum tubes

Diode-Pentode

Combination triode-pentode developed for receiver frequency-changing and related signal-processing service. The pentode performs mixer/converter work while the separate triode supplies local oscillation in series-heater radio designs.

Base

Not recorded

Socket

Not recorded

Heater

28 V

Sections

2

Diode-Diode-Pentode

Combination sharp-characteristic pentode and two diodes for receiver signal amplification, detection, and control functions. The pentode provides voltage gain while the diode sections handle detector and rectification duties.

Base

Not recorded

Socket

B9A

Heater

19 V

Sections

3

Pentode-Triode

Frame-grid triode-pentode used as combined oscillator and mixer stages in VHF color and black-and-white television receivers.

Base

9DX

Socket

Not recorded

Heater

10.5 V

Sections

2

Diode

Low-voltage diode for signal detection and high-frequency rectification in battery-powered equipment. Its unusually high resonant frequency supports detector use well into UHF while retaining very modest current requirements.

Base

Not recorded

Socket

Not recorded

Heater

1.4 V

Sections

1

Heptode

High-frequency converter tube for oscillator and mixer service in radio receivers. Its multi-grid structure combines local-oscillator generation and frequency conversion within a single receiving tube.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

1

Heptode

Heptode converter for superheterodyne receivers, combining local-oscillator and mixer action in one multi-grid structure. Its series-heater characteristics make it well suited to AC/DC radio receiver designs.

Base

8-A

Socket

IO

Heater

12.6 V

Sections

1

Heptode

GT-envelope heptode oscillator-converter for superheterodyne receivers. Local oscillation and frequency conversion are integrated in one multi-grid structure, with heater characteristics suited to AC/DC series-string radios.

Base

Not recorded

Socket

IO

Heater

12.6 V

Sections

1

Heptode-Triode

Brimar 12AH8 indirectly heated triode-heptode radio frequency changer with common cathode, internally coupled oscillator grid, 6.3/12.6 V center-tapped heater and B9A base.

Base

B9A

Socket

B9A

Heater

12.6 V

Sections

2

Diode-Diode

Twin-diode receiving tube for detector, discriminator, and general signal-rectification applications. Two independent diode sections make it useful for matched or complementary detection and control-voltage functions.

Base

E7-1

Socket

B7G

Heater

12.6 V

Sections

2

Heptode

Heptode oscillator-mixer for superheterodyne frequency conversion. It combines local oscillator and mixer action in one multi-grid structure with comparatively strong conversion performance for radio receiver front ends.

Base

8CT

Socket

B9A

Heater

12.6 V

Sections

1

Heptode

Heptode oscillator-converter for AC/DC superheterodyne receivers. It integrates local-oscillator and mixer functions in one miniature tube, converting incoming RF signals to the receiver intermediate frequency.

Base

7CH

Socket

B7G

Heater

12.6 V

Sections

1

Diode-Diode-Pentode

Double-diode pentode combining detector and control-voltage rectification with a separate voltage-amplifier pentode. High plate resistance and low feedback capacitance support stable receiver signal amplification.

Base

8E

Socket

Not recorded

Heater

12.6 V

Sections

3

Diode-Diode-Pentode

GT-envelope double-diode pentode for detector, AVC, and low-frequency voltage-amplifier functions. Two diodes perform detection and control rectification while the pentode supplies subsequent LF gain.

Base

Not recorded

Socket

IO

Heater

12.6 V

Sections

3

Diode-Pentode

Combination diode-pentode for receiving-equipment detection and signal amplification. The diode provides detector or rectifying action while the pentode supplies useful voltage gain in series-heater receiver designs.

Base

Not recorded

Socket

B7G

Heater

12.6 V

Sections

2

Diode-Diode-Pentode

Double-diode pentode combining detector functions with a comparatively strong voltage-amplifier pentode. The paired diodes provide signal or control-voltage rectification while the pentode supplies subsequent receiver gain.

Base

J

Socket

Not recorded

Heater

12.6 V

Sections

3

Diode-Pentode

Remote-cutoff RF/IF pentode combined with a demodulator diode on a common cathode for receiver amplification and detection.

Base

7FW

Socket

B7G

Heater

12.6 V

Sections

2

Heptode

Heptode frequency converter for superheterodyne receiving equipment. Its multi-grid construction combines local oscillator and mixer functions, translating incoming radio-frequency signals to the receiver intermediate frequency.

Base

Not recorded

Socket

B7G

Heater

12.6 V

Sections

1

Diode-Pentode

Combined detector diode and pentode designed for detector and amplifier service in receiving equipment.

Base

8BU

Socket

IO

Heater

12.6 V

Sections

2

Diode-Pentode

Remote-cutoff RF pentode combined with a diode detector for receiver amplification and demodulation. The pentode provides controlled-gain RF/IF amplification while the diode supplies signal detection.

Base

OCTAL

Socket

IO

Heater

12.6 V

Sections

2

Heptode

Heptode oscillator-converter for superheterodyne radio receivers. It combines local oscillation and mixing in one multi-grid tube, translating incoming RF signals to the receiver intermediate frequency.

Base

8RV

Socket

IO

Heater

12.6 V

Sections

1

Heptode

GT-envelope heptode frequency converter for superheterodyne receivers. Local-oscillator and mixer functions are integrated in one tube, with heater characteristics suited to AC/DC series-string radio designs.

Base

8AD

Socket

IO

Heater

12.6 V

Sections

1

Diode-Pentode

Combination diode-pentode providing signal detection and voltage amplification within one receiving tube. The pentode offers useful gain and isolation while the diode supplies detector or control-voltage rectification.

Base

7AZ

Socket

Not recorded

Heater

12.6 V

Sections

2

Diode-Diode-Pentode

GT-envelope pentode with two diodes for receiver amplification, detection, and control-voltage functions. The pentode supplies signal gain while paired diodes permit detector and AVC-related rectification.

Base

7AZ

Socket

IO

Heater

12.6 V

Sections

3

Heptode

Triode-heptode frequency converter for superheterodyne receivers. The triode supplies local oscillation while the heptode performs mixing, integrating oscillator and frequency-changing functions within one envelope for compact radio front ends.

Base

8RV

Socket

IO

Heater

12.6 V

Sections

1

Heptode

GT-envelope heptode oscillator-converter for superheterodyne receivers. Its multi-grid structure combines local oscillation and mixing, translating incoming radio-frequency signals to the intermediate frequency while providing useful isolation between input and oscillator circuits.

Base

8ADV

Socket

IO

Heater

12.6 V

Sections

1

Heptode

Variable-mu heptode frequency changer for superheterodyne receivers. Its multi-grid construction combines oscillator and mixer action, translating incoming RF signals to the receiver intermediate frequency while permitting gain control in the converter stage.

Base

Not recorded

Socket

B7

Heater

13 V

Sections

1

Heptode

Heptode oscillator-converter for superheterodyne radio reception. Its multi-grid structure combines local-oscillator and mixer functions in one tube, translating incoming RF signals to intermediate frequency in series-heater receiver designs.

Base

8X

Socket

IO

Heater

12.6 V

Sections

1

Diode-Diode-Pentode

Double-diode remote-cutoff pentode combining receiver detection, AVC, and signal amplification. The two diodes provide signal and control-voltage rectification while the pentode supplies useful voltage gain for RF, IF, or audio-frequency service.

Base

8AE

Socket

LOCTAL8

Heater

12.6 V

Sections

3

Heptode

Heptode oscillator-converter for superheterodyne receiving equipment. Its multi-grid structure combines local oscillation and mixing in one valve, translating incoming radio-frequency signals to intermediate frequency while maintaining useful isolation between converter circuits.

Base

8ALT

Socket

LOCTAL8

Heater

14 V

Sections

1

Diode-Diode-Pentode

Double-diode pentode combining detector, AVC, and signal-amplifier functions. The two diode plates perform detection and control-voltage rectification while the pentode supplies high-resistance voltage amplification for compact receiver signal chains.

Base

8AE

Socket

B8G

Heater

12.6 V

Sections

3

Hexode-Triode

Rogers 14Y7 triode-hexode radio frequency converter with shared cathode and internally coupled oscillator grid, 14 V 0.1 A heater, and 9Q nine-pin base.

Base

9Q

Socket

B9A

Heater

14 V

Sections

2

Pentode

Two-volt battery pentode for high-frequency amplification, detection, and converter service in portable radio receivers. Its low-power filament suits battery operation, while high plate resistance provides useful gain in RF, detector, or superheterodyne frequency-changing circuits.

Base

5F

Socket

UX5

Heater

2 V

Sections

1

Heptode

Heptode frequency changer for superheterodyne radio receivers, combining oscillator and mixer action within one multi-grid valve. Manufacturer data specify its conversion characteristics and operating conditions for dedicated receiver frequency-changing service.

Base

Not recorded

Socket

IO

Heater

4 V

Sections

1

Heptode

Heptode frequency changer for superheterodyne receiver service. Its multi-grid structure integrates local oscillation and mixing, converting incoming radio-frequency signals to the receiver intermediate frequency within a single valve.

Base

Not recorded

Socket

IO

Heater

13 V

Sections

1

Heptode

Heptode oscillator-converter for superheterodyne radio receivers, combining local oscillation and frequency conversion within one valve. Its series-heater design suits compact AC/DC receiving equipment requiring an integrated frequency-changing stage.

Base

Not recorded

Socket

IO

Heater

13 V

Sections

1

Heptode

Low-microphonics industrial pentagrid amplifier-modulator equivalent to the 6L7, intended for radio mixing, modulation, and controlled RF amplification.

Base

7T

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode-Tetrode

Sharp-cutoff dual tetrode designed for VHF RF-amplifier and autodyne mixer service in receiver front ends.

Base

10F

Socket

B10B

Heater

16.8 V

Sections

2

Heptode

Miniature dual-control heptode converter for combined mixer and local-oscillator service in superheterodyne receivers. Its multi-grid structure provides useful isolation between RF input, oscillator, and converted-signal circuits in low-current series-heater radio designs.

Base

7CH

Socket

B7G

Heater

18 V

Sections

1

Heptode

Miniature heptode frequency converter combining oscillator and mixer functions in one tube. Electrically related to the 18FX6 but with controlled heater characteristics, it is designed for low-current series-heater superheterodyne receivers.

Base

Not recorded

Socket

B7G

Heater

18 V

Sections

1

Tetrode-Triode

Triode-tetrode used as an FM converter and RF amplifier in radio receivers.

Base

9FX

Socket

B9A

Heater

18.9 V

Sections

2

Pentode-Triode

Medium-mu triode and sharp-cutoff pentode used together as a television oscillator and mixer.

Base

9AE

Socket

B9A

Heater

18.9 V

Sections

2

Pentode-Triode

Medium-mu triode and sharp-cutoff pentode used as an FM converter and RF amplifier in radio receivers.

Base

9FA

Socket

B9A

Heater

18.9 V

Sections

2

Pentode-Triode

Triode-pentode designed for combined oscillator and mixer service in receiving equipment.

Base

9LY

Socket

B9A

Heater

18.9 V

Sections

2

Pentode-Triode

Medium-mu triode and sharp-cutoff pentode used as a combined oscillator and mixer in television and AM/FM receivers.

Base

9AK

Socket

B9A

Heater

18.9 V

Sections

2

Heptode

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

Not recorded

Socket

B7G

Heater

1.2 V

Sections

1

Heptode

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

Not recorded

Socket

B7G

Heater

1.2 V

Sections

1

Heptode

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

6L

Socket

UX6

Heater

2 V

Sections

1

Heptode

Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.

Base

7Z

Socket

IO

Heater

1.4 V

Sections

1