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ID = 28901
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Text 
  <1925 very rare. ***
Identical to VT-13
Similar Tubes
Normally replaceable-slightly different:

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Military and/or Government
Filament Vf 3.3 Volts / If 1.1 Ampere / Direct / Battery =

This tube is a detector amplifier oscillator designed by the US Signal Corps for use in aircraft or where rough usage was encountered. The tube had an limited production of 1100, which were supplied to the US military. The tube was fitted with the Shaw Standard base

Information source Saga of the Vacuum Tube, Tyne   page 149, 150
VT-13: Bill Condon collection, with kind permission of Mrs V Condon
Fin Stewart

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VT-13: Fin Stewart
Fin Stewart


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