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VT157_GPO

Information - Help 
ID = 65812
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Diode-Pentode   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT157_GPO = 2B7 = ER2B7 = G-2B7-S = PH2B7 = CV1706
Similar Tubes
Normally replaceable-slightly different:
  2B7EE ; Ut2B7

Base 7-Pin-Base-general, old, USA Top contact with a cap
Was used by Telephony
Filament Vf 2.5 Volts / If 0.8 Ampere / Indirect / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
x 116 x 38 mm / x 4.57 x 1.50 inch
Weight 39 g / 1.38 oz
Literature -- Collector info (Sammler)   
 
2b7.png
VT157_GPO: Fin Stewart
Fin Stewart

 

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