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ID = 4236
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 2E31 = CK553AX
First Source (s)
10.Nov.1945 : Electron Tube Registration List rec. 450
Successor Tubes 2E32  

Base Subminiatur (wire-ends, flat) B5A
Was used by Radio/TV-reception etc.
Filament Vf 1.2 Volts / If 0.05 Ampere / Direct / Battery =
Description Sharp-cutoff RF pentode, 500 umhos transconductance, 45V plate voltage.
Identical to 2E32, but with flying leads for direct soldering into circuit. 
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.

2E31: Mia raccolta schemi.
Pier Antonio Aluffi

sock_5d.png 2E31: Raytheon Manual
Heinz Höger

Just Qvigstad
2E31: Raytheon Manual
Heinz Höger

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Usage in Models 1= 1949

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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