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2E42

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ID = 4241
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Diode-Pentode   RF/IF-Stage 
Identical to 2E42 = CK551AY
Similar Tubes
Normally replaceable-slightly different:
  CK551AXA
Other base:
  2E41
First Source (s)
05.Nov.1945 : Electron Tube Registration List rec. 450
Predecessor Tubes 2E41  
Base Subminiatur (wire-ends, flat) B5A (Codex=sp)
Was used by Radio/TV-reception etc.
Filament Vf 1.2 Volts / If 0.03 Ampere / Direct / Battery =
Description Similar to 2E41 with leads cut to plug in a socket. 
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
2e42.png
2E42: Schematic from my documents.
Pier Antonio Aluffi
2e42_sock.png 2E42: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

Just Qvigstad 		2e42_1.png
2E42: Manufacturer's Literature
Emilio Ciardiello
Usage in Models 1= 1945 ; 2= 1948??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

Aldo Patriarca (CH)
Karl-Heinz Entrich † 7.21 (D)
 
2e42.jpg

2E42
 
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