Electronic tube and vacuum tube catalog

Base

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Socket code

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Electrical Summary

Heater	6.3 V
gm	S1: 4.5 mA/VS2: 4.5 mA/V

Sections

2

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

Base

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Socket code

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Electrical Summary

Heater	12.6 V / 650 mA

Sections

2

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

Base

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Socket code

B9A

Electrical Summary

gm	S1: 3.3 mA/VS2: 3.3 mA/V

Sections

2

B9A - Small-button Noval 9-contact

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

Base

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Socket code

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Electrical Summary

Heater	12.6 V / 1.8 A
Plate	S1: 8,000 V / 15 WS2: 8,000 V / 15 W
Screen	S1: 950 V / 3 WS2: 950 V / 3 W

Sections

2

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