Radio Antica e Radio d'epoca
VT15_GPO
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Stato:
Gran Bretagna (Regno Unito)
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| Identico a |
VT15_GPO
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| Valvole
simili |
Other base and data slightly different:
8RR4
; AT40
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| Zoccolo |
SPECIAL TUBEBASE in general
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| Utilizzata per |
Telephony |
| Filamento |
Direct / Specified voltage AC/DC |
| Descrizione |
Tube designed for use by the British Post Office in carrier telephony applications. First made in 1921 with limited production of only 50 tubes.
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| Bibliografia |
British Radio Valves - The Vintage Years: 1904-1925 Pages 83 and 133
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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