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ID = 4199
Tube type:  Signal Diode - one single system   UHF 
Identical to 2B22 = GL2B22 = GL559 = CV2931 = 559
Similar Tubes
Normally replaceable-slightly different:

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 0.75 Ampere / Indirect / Specified voltage AC/DC

Planar 'lighthouse' diode, TR switch, UHF mixer or detector.

  • 300 V peak
  • 20 mA
  • 1.5 GHz.
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Tube Lore (I)   
2B22: Private collection
Emilio Ciardiello

2B22: ARRL Handbook 1972
Michael Schlör


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