Radio Antica e Radio d'epoca
257_concertmaster
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Stato:
USA (Stati Uniti d'America)
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| Identico a |
257_concertmaster
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| Zoccolo |
UY-Base, 5 Pins (USA, April 1927)
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| Utilizzata per |
Radio/TV-reception etc. |
| Filamento |
Vf 5 Volt / If 0.3 Ampere / Direct / Specified voltage AC/DC |
| Descrizione |
This tube was intended for use in the output stage of D. C. line operated receivers and was designed to give relatively high amplification and power output with low plate voltage (110) available for this type of service. National Union and Tung-Sol also made this tube.
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Dimensioni
(LxAxP)
incl.pins/tip |
x 135 x 52 mm / x 5.31 x 2.05 inch |
| Bibliografia |
-- Collector info (Sammler)
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257_concertmaster: Fin Stewart
Fin Stewart
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Just Qvigstad
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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