399B

Country:	United States of America (USA)		Brand:	Western Electric Company Inc.; New York (NY)
			Tube type:	Vacuum Pentode

Tube ID = 35418


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Identical to	399B
Similar Tubes	Heater different: 1T4; 399A

Base	Miniatur-7-Pin-Base B7G, USA 1940
Was used by	Telephony
Filament	Vf 1.15 Volts / If: 0.65 Ampere / -: Indirect /
Description	Miniature pentode for telephone carrier repeaters. Similar to 1T4 with different heater voltage. Indirect heating version of 399A.
Literature	Tube Lore, Sibley, USA 1996

ARRL Handbook 1972
Michael Schlör

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399B

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