Antique radios, Old Time Radios
1T4
Country:
United States of America (USA)
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Identical to |
1T4
= DF91
= W17
= 1K2
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Similar
Tubes |
Normally replaceable-slightly different:
CV1971
Other class quality (otherwise equal):
CV785
; VT-173
Heater different:
1T4T
; 399A
; 399B
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First year |
1940
Tube leaflet collection E.Erb Analysis by original leaflets
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First Source
(s) |
13.Nov.1939 : Tube Lore (I)
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Base |
Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zoo)
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Filament |
Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery = |
Tube prices |
13 Tube prices (visible for members
only)
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Information source |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
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1T4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
More ...
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1T4: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
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1T4: Manufacturer's Literature
Emilio Ciardiello
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1547
Collection of
Collection of a member from FIN
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