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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, USA (also tubes) 
  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 2 Tube prices (visible for members only)
Literature 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
2g21.jpg
2G21: scc
Christian Schaufelberger

 
Variants
 
2g21_s.gif
2G21: Mazda Datasheet
Günther Stabe

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


Usage in Models 1= 1951?
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

2G21*Box

O.F.
Otto Frosinn
   

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