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ID = 28561
Great Britain (UK)
Brand: Louden Valves (tubes) - see also Fellows; London
Tube type:  Triode, vacuum   Audio Frequency 
Identical to FE1_Louden
First year 1925 ?? Saga of the Vacuum Tube, Tyne page 392


Thrower calls it F1 and has data for it. Either Tyne or Thrower may be in error.
Louden valves were marketet by Fellows Magneto Co. Ltd. in 1924 and 1925. Some Louden designations used were FE1 and FE2 for bright emitters; FER1, FER2 and 0.06 designated dull emitters having thoriated filaments.

Information source Saga of the Vacuum Tube, Tyne   page 392
Radios von gestern, 4. Auflage   Seite 217
FE1_Louden: Fin Stewart
Fin Stewart


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