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ID = 46129
Tube type:  TWT, Travelling wave tube 
Identical to WJ-211

Filament Vf 3 Volts / If 0.6 Ampere / Indirect
Description Ultra low-noise amplifier. 2 to 4GHz, 20dB gain, 4.3dB noise figure.
External focusing coil, coaxial N-type RF connectors.
Information source - - Manufacturers Literature   
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WJ-211: Manufacturer's Literature
Emilio Ciardiello

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