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ID = 28971
United States of America (USA)
Brand: Sovereign Electric & Mfg. Co.; Chicago
Tube type:  Triode, vacuum   Universal 
Identical to 501_Sovereign
First year 1928 Saga of the Vacuumtube, Tyne page 346

Base 2 Top contacts
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 1.1 Ampere / Indirect / Parallel, (AC/DC)

AC tube made by Sovereign Electric & MFG Co., Chicago.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 138 x 42 mm / x 5.43 x 1.65 inch
Weight 63 g / 2.22 oz
501_Sovereign: Ebay Seller Ebay Seller lar38 Item 221004311487
Franz Scharner


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