Antique radios, Old Time Radios
N30
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Country:
Great Britain (UK)
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| Identical to |
N30
|
| Similar
Tubes |
Other shape (e.g. bulb type):
N30/G
Normally replaceable-slightly different:
PTA
Multiple differences or of other kind:
PT4
|
| First year |
1934
-- Original-techn. papers. 70 Years of Radio Valves
|
| Base |
British-7-Pin, old (M7A)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 13 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working) |
| Description |
Pa <8W, Pout 3.2W at Va=Vs=250V and Ia=32mA
Same as N30/G but Catkin version.
Text in other
languages (may
differ)
|
| Information source |
Wireless World (The), London (WW, 79) 1934 Data booklet.PT4
The Radio Trade Directory USA 1925 p. 152, 227 & 333
History of the British Radio Valve to 1940
The Saga of Marconi Osram Valve
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N30: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad
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N30: My schematic collection.
Pier Antonio Aluffi
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):24
Collection of
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