Radio Antica e Radio d'epoca
DA4
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Stato:
USA (Stati Uniti d'America)
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| Identico a |
DA4
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| Zoccolo |
UX-Base (4 Pins (2 thick, USA 1924)
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| Utilizzata per |
Radio/TV-reception etc. |
| Filamento |
Direct / Battery = |
| Descrizione |
This was a high mu possibly made for the Donle for the "Truphonic Amplifier". An article on page 11 of Radio World September 18th, 1926 describes the amplifier he developed in 1926. This shows a three tube circuit diagram but does not mention the type of tubes used.
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Dimensioni
(LxAxP)
incl.pins/tip |
37 x 104 x 35 mm / 1.46 x 4.09 x 1.38 inch |
| Peso |
46 g / 1.62 oz |
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Just Qvigstad
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Collezione di
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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