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2G21

Information - Help 
ID = 4254
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Identical to 2G21 = CK555AX
Similar Tubes
Normally replaceable-slightly different:
  CK555AY
Other base:
  2G22
First Source (s)
10.Nov.1945 : Electron Tube Registration List rec. 450

Base Subminiatur (wire-ends, flat) B5A Wires only.
Was used by Radio/TV-reception etc.
Filament Vf 1.25 Volts / If 0.05 Ampere / Direct / Battery =
Description Subminiature frequency converter intended for operation in battery operated sets. Supply voltage from 22.5 to 45 volts.
Flying leads for direct soldering in the circuit. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
10 x 40 x 7 mm / 0.39 x 1.57 x 0.28 inch
Tube prices 4 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   Raytheon/Mazda Datasheets
Taschenbuch zum Röhren-Codex 1948/49   
  2g21_umgeb3.gif
  2G21: G.S. (~ Belmont Boulevard mit 2G22)
Günther Stabe † 19.8.20
 
2g21.jpg
2G21: scc
Christian Schaufelberger

 
2g21_s.gif
2G21: Mazda Datasheet
Günther Stabe † 19.8.20

 
2g21_data.png
2G21: RAYTHEON
Wesselin Tzenow † 25.5.10


from Just Qvigstad

Usage in Models 1= 1951

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


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