Radio Antica e Radio d'epoca
407B
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Stato:
USA (Stati Uniti d'America)
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| Identico a |
407B
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| Valvole
simili |
Different maximum ratings:
407A
Multiple differences or of other kind:
2C51
; 396A
; 5670
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| Zoccolo |
Noval, 9 pin miniature (USA pico-9) B9A
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| Filamento |
Vf 40 Volt / If 0.05 Ampere / Indirect |
| Descrizione |
Miniature twin triode, for use in carrier repeater equipment having heaters and plate series supplied through cable pairs. Heater can be connected for 20V, 100mA operation. 'B' was uprated to 1.6W, 130V cathode to heater and 6.0mS Gm.
WE known manufacturer.
Testo in altre lingue
(può variare)
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| Bibliografia |
Tube Lore (I)
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407B: Ratheiser
Anonimo 10 Collezionista
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Just Qvigstad
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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