Radio Antica e Radio d'epoca
R_Osram
Stato:
Gran Bretagna (Regno Unito)
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Identico a |
R_Osram
= RAF
= TM
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Valvole
simili |
Other shape (e.g. bulb type):
R_England
Sostituita normalmente - piccola diff.:
RA_Mullard
; VT3_GPO
Altra base:
VT4_GPO
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Zoccolo |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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Utilizzata per |
Radio/TV-reception etc. |
Filamento |
Vf 4 Volt / If 0.65 Ampere / Direct / Battery = |
Descrizione |
copy of french TM during WW1. A "hard" tube, first made by the Osram Lamp Works September 1917. Also made in England by B.T.-H., ..Metropolitan Vickers (Cosmos), A.C.Cossor Ltd, Cryselco Electric Lamp Company, Edison-Swan, Mullard Radio Valve Company, Marconi Wireless and Telegraph, Stearn's Electric Lamp Company and H.W.Sullivan Ltd. An Osram R tube exists with a factory fitted American "Shaw"-UV base. The Tube was known as VT4 in the British Post Office. British Navy version NR12. The Osram brand was discontinued on this tube with the formation of the Marconi Osram valve Co in 1919. Late in 1925 the company used bakelite bases for the tube
Testo in altre lingue
(può variare)
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Dimensioni (LxAxP) incl.pins/tip |
x 118 x 54 mm / x 4.65 x 2.13 inch |
Peso |
52 g / 1.83 oz |
Quotazioni |
6 Quotazioni (visibili solo per gli
associati)
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Bibliografia |
-- Collector info (Sammler)
Saga of the Vacuum Tube, Tyne Pages 170-172, 217-221,380
70 Years of Radiotubes and V.
British Radio Valves - The Vintage Years: 1904-1925
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R_Osram: rtt
Anonimo 10 Collezionista
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Just Qvigstad
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Numero
totale di modelli di Radiomuseum.org che
utilizzano questa valvola:1
Collezione di
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[rmxtube-en]
Conformità dei dati |
Ulteriori informazioni |
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