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Ut-2A7

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ID = 25319
       
Country:
Japan
Brand: Common type Japan tube/semicond.
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter 
Identical to Ut-2A7 = Ut2A7 = CV787 = PH2A7 = 2A7 = ER2A7 = 2A7S
Similar Tubes
Other shape (e.g. bulb type):
  G-2A7-S
Heater different:
  Ut-6A7

Base 7-Pin-Base U7A = small, old, USA
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 0.8 Ampere / Indirect / Specified voltage AC/DC
Description

Japan

 
Dimensions (WHD)
incl. pins / tip
x 116 x 38 mm / x 4.57 x 1.50 inch
Weight 39 g / 1.38 oz
Information source -- Collector info (Sammler)   
Babani, International Radio Tube Encyclopaedia   

ut2a7_so.png Ut-2A7: ARRL Handbook 1972
Anonymous 10 Collector


Just Qvigstad
Usage in Models 1= 1937?? ; 1= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
 
ut2a7.jpg

Ut-2A7
 

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