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T-57

Information - Help 
ID = 81881
       
Country:
United States of America (USA)
Brand: Triad Television & Mfg. Co.; Pawtucket, RI
Tube type:  Vacuum Pentode   Audio Frequency 
Identical to T-57 = 57 = PH57

Base 6-Pin-Base U6A, old, USA Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
x 119 x 42 mm / x 4.69 x 1.65 inch
Weight 42 g / 1.48 oz
Information source -- Original prospect or advert   Allied Radio catalog March 1933
 

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