Radio Antica e Radio d'epoca
1238
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Stato:
USA (Stati Uniti d'America)
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| Identico a |
1238
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| Valvole
simili |
Different maximum ratings:
28D7
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| Zoccolo |
Loctal-8, B8G (Sylvania, 1938)
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| Filamento |
Vf 28 Volt / If 0.4 Ampere / Indirect |
| Descrizione |
Designed to operate with common, heater and B+, 28V supply. At 0V grid bias, 28V plates and screen grids, delivers 600mW across 1500 ohms plate-to-plate load.
Special version of 28D7 uprated to 3.3W.
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| Bibliografia |
Tube Lore (I)
- - Manufacturers Literature
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- - -
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| Tube Tester Data |
Avo CT160 |
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1238
Emilio Ciardiello
Segue ...
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Just Qvigstad
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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