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4BL8

Information - Help 
ID = 4402
       
 
   
Tube type:  Triode-Pentode 
Identical to 4BL8 = XCF80
Similar Tubes
Heater different:
  6BL8 ; ECF80

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 4.6 Volts / If 0.6 Ampere / Indirect
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
  4bl8.png
  4BL8: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
4bl8.jpg
4BL8: Michael Gnaedig
Michael Gnaedig-Fischer

 
no55_g_11.gif
4BL8: RTT Schwandt
Günther Stabe † 19.8.20

 
4bl8_techdat01.png
4BL8: RCA Tube Manual
Peter Hoddow


from Just Qvigstad

Usage in Models 2= 1960??

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


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