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ID = 22240
United States of America (USA)
Brand: Cunningham Inc., E.T.; Harrison (NJ)
Tube type:  Triode, vacuum   Power/Output 
Identical to CX310 = D410_DeForest = GSX-210 = AC10 = 510 = 4618_WLS = CF510 = ER210 = L10 = 57T210 = X-210 = MX210 = X210 = RayX-210 = NU-10 = PA210 = DC210 = T-10 = Z210 = SX210_Schickerling = JX210 = RYB210 = SLX210 = T-210 = NX-210
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):
  210_special ; UX841
Other base:

Filament Vf 7.5 Volts / If 1.25 Ampere / Direct / Parallel, (AC/DC)
CX310: tube from my collection
Oleg Missevitch

CX310: Telefunken Werkstattbuch
Wolfgang Bauer

CX310: Cunningham Radio Tubes Manual C-10 1932
Daniel Consales

Usage in Models 2= 1926 ; 2= 1930??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

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