Voltage Dual Tetrode vacuum tubes

Tetrode-Tetrode

Twin tetrode designed for VHF RF amplification and autodyne mixer service, a heater-variant member of a television/radio front-end converter family.

Base

Not recorded

Socket

B10B

Heater

15 V

Sections

2

Tetrode-Tetrode

Twin tetrode designed for VHF RF amplification and autodyne mixer service, a heater-variant member of a television/radio front-end converter family.

Base

Not recorded

Socket

B10B

Heater

16.8 V

Sections

2

Tetrode-Tetrode

Directly heated dual electrometric tetrode for low-current measuring devices.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

2

Tetrode-Tetrode

5656 voltage dual tetrode electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

2

Tetrode-Tetrode

Directly heated subminiature double tetrode designed for push-pull Class-C RF power-amplifier service at VHF frequencies.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

1.25 V

Sections

2

Tetrode-Tetrode

Directly heated dual space-charge tetrode electrometer tube designed for highly stable bridge circuits measuring extremely small currents and voltages.

Base

Not recorded

Socket

B9A

Heater

3 V

Sections

2

Tetrode-Tetrode

Miniature frame-grid twin tetrode designed for compact RF power equipment, with useful output and full-input operation extending to approximately 400 MHz.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

2

Tetrode-Tetrode

Sharp-cutoff double tetrode with common cathode and screen, intended for general amplifier service.

Base

8BV

Socket

LOCTAL8

Heater

7 V

Sections

2

Tetrode-Tetrode

Quick-heating internally neutralized twin tetrode designed for RF power amplification and frequency multiplication in mobile or fixed equipment to approximately 500 MHz.

Base

Not recorded

Socket

Not recorded

Heater

11 V

Sections

2

Tetrode-Tetrode

Twin tetrode designed for Class-C RF amplifier, oscillator, frequency-multiplier, and modulator service to approximately 200 MHz.

Base

Not recorded

Socket

B9A

Heater

6.75 V

Sections

2

Tetrode-Tetrode

Single-ended twin tetrode designed for mobile Class-C RF amplification, oscillation, and frequency multiplication to approximately 200 MHz.

Base

Not recorded

Socket

B9A

Heater

6.75 V

Sections

2

Tetrode-Tetrode

Raytheon subminiature double tetrode designed for RF power-amplifier service, providing two power sections for compact transmitting equipment.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

2

Tetrode-Tetrode

Directly heated subminiature double tetrode designed for electrometer service, with nominal control-grid current around 10^-14 ampere.

Base

Not recorded

Socket

Not recorded

Heater

1.25 V

Sections

2

Tetrode-Tetrode

Directly heated subminiature twin tetrode designed for RF power-amplifier service in compact electronic equipment.

Base

8CB

Socket

Not recorded

Heater

1.25 V

Sections

2

Tetrode-Tetrode

Double electrometer tetrode designed for precision measurement of extremely small electrical currents and voltages.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

2

Tetrode-Tetrode

Russian dual tetrode documented in technical reference literature; available source does not clearly establish a narrower specialized functional role.

Base

Not recorded

Socket

SIDE8

Heater

Not recorded

Sections

2

Tetrode-Tetrode

Russian double tetrode designed for pulse modulators in RF equipment, with high peak-current capability in each power section.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Tetrode-Tetrode

Internally neutralized double tetrode designed for RF amplification, oscillation, and frequency multiplication.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

2

Tetrode-Tetrode

Radiation-cooled dual transmitting tetrode designed for frequency multiplication and audio-frequency amplification, explicitly equivalent to SRS4452 and 6252.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Tetrode-Tetrode

Internally neutralized double tetrode designed for HF amplification, oscillation, frequency multiplication, and modulation.

Base

Not recorded

Socket

B7A

Heater

6.3 V

Sections

2

Tetrode-Tetrode

RF power double tetrode designed for amplification or frequency multiplication to approximately 500 MHz.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

2

Tetrode-Tetrode

Double tetrode pulse modulator designed for approximately 5 kV and 10 A pulsed service in high-power electronic equipment.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Rectifier-Tetrode

Radiation-cooled internally neutralized double tetrode designed for HF amplification, oscillation, modulation, frequency multiplication, and pulse-modulator service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

2

Rectifier-Tetrode

Siemens dual transmitting tetrode documented for high-frequency power service; available source does not clearly establish a narrower application subset.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Rectifier-Tetrode

Radiation-cooled internally neutralized double tetrode designed for HF amplification, oscillation, modulation, and frequency multiplication.

Base

Not recorded

Socket

B9A

Heater

Not recorded

Sections

2

Rectifier-Tetrode

Radiation-cooled dual transmitting tetrode designed for pulse modulation and magnetron keying, capable of controlling approximately 40 kW in pulsed service.

Base

Not recorded

Socket

Not recorded

Heater

12.6 V

Sections

2

Tetrode-Tetrode

Quick-heating internally neutralized twin tetrode designed for intermittent mobile RF power-amplifier and frequency-multiplier service; co-designated YL1130/8408.

Base

Not recorded

Socket

B9A

Heater

11 V

Sections

2