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ID = 30055
United States of America (USA)
Brand: Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY
Tube type:  Half-Wave Rectifier, gasfilled   Power-supply 
Identical to F575A = 575A

Base Jumbo 4-pin bayonet (1918) Top contact with a cap.
Was used by Telephony
Filament Vf 5 Volts / If 10 Ampere / Direct / Specified voltage AC/DC

Jumbo 4-pin bayonet base.

15000 V peak inverse; 1.5A mean, 6A peak.

Dimensions (WHD)
incl. pins / tip
x 250 x 90 mm / x 9.84 x 3.54 inch
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 67, p. 91
Tube Lore (II)   p. 154

575a~~3.png F575A: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad
F575A: Manufacturer's Literature
Emilio Ciardiello

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