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PH2A7

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ID = 56194
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter   Controlling (mu) 
  Ca. 1925 up to 1945 rare.
Identical to PH2A7 = 2A7 = ER2A7 = Ut-2A7 = 2A7S = CV787 = 2A7S
Similar Tubes
Other shape (e.g. bulb type):
  G-2A7-S

Base 7-Pin-Base-general, 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)
Dimensions (WHD)
incl. pins / tip
x 116 x 38 mm / x 4.57 x 1.50 inch
Weight 39 g / 1.38 oz
Literature - - Manufacturers Literature   1933
 
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PH2A7: Telefunken Werkstattbuch
Wolfgang Bauer

 

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