Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 4241
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:
Other base:
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)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
Aldo Patriarca

2E42: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

2E42: Manufacturer's Literature
Emilio Ciardiello

Usage in Models 1= 1945 ; 2= 1948??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]