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ID = 4237
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 2E32 = CK553AY
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
10.Nov.1945 : Electron Tube Registration List rec. 450
Predecessor Tubes 2E31  

Base Subminiatur (wire-ends, flat) B5A (Codex=sp)
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 2E31, but with short leads for insertion into socket. 
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
-- Original prospect or advert

2E32: Mia raccolta schemi.
Pier Antonio Aluffi

2e32_sock.png 2E32: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

More ...

Just Qvigstad
2E32: Manufacturer's Literature
Emilio Ciardiello

Usage in Models 1= 1945 ; 2= 1948?? ; 1= 1950? ; 1= 1951 ; 1= 1952

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of



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