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ARDE

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ID = 28398
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Developer: Ediswan, Siemens Edison Swan Electric Co.; London 
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to ARDE
Similar Tubes
Normally replaceable-slightly different:
  ARDE_HF ; ARDE_LF
First year 1923 Saga of the Vacuumtube, Tyne Seite 373

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.3 Ampere / Direct / Battery =
Description

Neg, grid voltage = 1, Ra = 27.0 kOhm, slope = 0.30 mA/V, amplification = 9.0. See also the more specialised ARDE_HF and ARDE_LF

 
Dimensions (WHD)
incl. pins / tip
31 x 110 x mm / 1.22 x 4.33 x inch
Weight 47 g / 1.66 oz
Literature - - Manufacturers Literature   1924
British Radio Valves - The Vintage Years, Thrower   Pages 50, 87 & 115
Saga of the Vacuumtube, Tyne
 
arde_bild1.jpg
ARDE: R.O.
Rudolf Osterkamp

 
arde_spec.png
ARDE: Herstellerinfo
Anonymous 15 Collector



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