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Ut-2A7

Information - Help 
ID = 25319
       
Country:
Japan
Brand: Common type Japan tube/semicond.
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter 
Identical to Ut-2A7 = 2A7 = ER2A7 = 2A7S = Ut2A7 = CV787 = PH2A7
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 / Parallel, (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
Literature -- Collector info (Sammler)   
Babani, International Radio Tube Encyclopaedia   
 
ut2a7.jpg
Ut-2A7: KoBi
Konrad Birkner † 12.08.2014

 
ut2a7_so.png
Ut-2A7: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 1= 1937?? ; 1= 1939

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

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