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4EJ7

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ID = 4422
       
 
   
Tube type:  Vacuum Pentode 
Identical to 4EJ7 = LF184 = YF184
Similar Tubes
Heater different:
  3EJ7 ; 6EJ7 ; EF184 ; XF184
Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 4.4 Volts / If 0.45 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
no7_g_11.gif 4EJ7: RTT Schwandt
Günther Stabe † 19.8.20

Just Qvigstad 		4ej7_techdat01.png
4EJ7: RCA Tube Manual
Peter Hoddow
Usage in Models 1= 1961? ; 1= 1964?? ; 1= 1964 ; 1= 1965?? ; 1= 1965? ; 1= 1966? ; 1= 1967?? ; 1= 1968?? ; 1= 1969 ; 4= 1970?? ; 2= 1970 ; 1= 1971 ; 1= 1972
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17

Collection of

Museum Roggenhofer (A)
Hermann Fleischanderl (A)
Robert Sarbell † 22.3.22 (USA)
Michael Gnaedig-Fischer (MEX)
Christian Schaufelberger (CH)
Daniel Ambühl (CH)
Vicente Moncholi-Cebrian (E)
Antonio Rabitti (BR)
Danko Tkalec (HR)
Siegfried Droese (D)
Collection of a member from D
 
4ej7_a.jpg

4EJ7
 
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