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ID = 28780
United States of America (USA)
Brand: Moorhead Laboratories (Pacific); San Francisco
Developer: Moorhead Laboratories (Pacific); San Francisco 
Tube type:  Triode, vacuum   Audio Frequency 
  <1925 rare.
Identical to SE-1444_Moorhead = A_Moorhead = VT
Similar Tubes
Normally replaceable-slightly different:
First year 1918 Saga of the Vacuumtube, Tyne page 170.

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Military and/or Government
Filament Vf 4 Volts / If 0.7 Ampere / Direct / Battery =

When the British VT-32 was equipped with the American four-pin base and vertical element assembly and another glass, it was used by the US Navy in the World War I under the designation SE-1444. Some of the SE-1444 tubes have clear glass, others are reddish in color, which may be the cause of a phosphorus getter or an magnesium getter. The base on the earlier tubes was made by the Shaw Insulator Company, who were associated with Moorhead Laboratories. Late versions of this tube had porcelain insulation in the base.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
44 x 106 x 35 mm / 1.73 x 4.17 x 1.38 inch
Tube prices 2 Tube prices (visible for members only)
Literature Saga of the Vacuumtube, Tyne   page 126, 170-172
SE-1444_Moorhead: Bill Condon collection, with kind permission of Mrs V Condon
Fin Stewart

SE-1444_Moorhead: own collection
Peter den Boer


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