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PH247

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ID = 28255
       
Country:
Netherlands
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Vacuum Pentode   Power/Output 
Identical to PH247 = 47
First Source (s)
Jun.1931 : - - Manufacturers Literature

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.75 Ampere / Direct / Specified voltage AC/DC

ph247_sch.png
PH247: Manuale delle Valvole ed.Nord Est
Fabio Masetti

ph247_so.png PH247: ARRL Handbook 1972
Anonymous 10 Collector

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Just Qvigstad
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PH247: own collection
Peter den Boer

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Collection of

 
ph247.jpg

PH247
 

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