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ID = 22681
Brand: Castilla; Madrid
Tube type:  Triode, vacuum 
Identical to 4DC
Similar Tubes
Normally replaceable-slightly different:

Filament Vf 4 Volts
Information source - - -   de Darkness, Radio Válvulas, 1952
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4dc_so.png 4DC: rtt
Anonymous 10 Collector


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

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