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G-2A7-S

Information - Help 
ID = 56112
       
Country:
United States of America (USA)
Brand: Majestic tubes of Grigsby-Grunow
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter   Controlling (mu) 
Identical to G-2A7-S
Similar Tubes
Other shape (e.g. bulb type):
  2A7 ; 2A7S ; CV787 ; ER2A7 ; PH2A7 ; Ut-2A7
Other class quality (otherwise equal):
  NU-2A7S

Base 7-Pin-Base U7A = small, old, USA Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 0.8 Ampere / Indirect / Parallel, (AC/DC)
Description With sprayed metal shield - referred to as "other bulb shape" in "similar tubes" 
Dimensions (WHD)
incl. pins / tip
x 116 x 38 mm / x 4.57 x 1.50 inch
Weight 39 g / 1.38 oz
 

Usage in Models 1= 1933?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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