399A

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

Tube ID = 35417


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

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

ARRL Handbook 1972
Michael Schlör

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399A

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