Antique radios, Old Time Radios
NT39
| Base |
Jumbo 4-pin bayonet (1918) (Codex=By)
Top contact screw type.
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| Was used by |
Military and/or Government |
| Filament |
Vf 10 Volts / If 1.65 Ampere / Direct / Specified voltage AC/DC |
| Description |
75W max plate dissipation, External anode with integral finned radiator. Large 4-pin bayonet base.
1500V max operating voltage, amplification factor 22.
37MHz max frequency for 75% anode rating.
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Dimensions (WHD)
incl. pins / tip |
x 210 x 51 mm / x 8.27 x 2.01 inch |
| Weight |
332 g / 11.71 oz |
| Information source |
Babani, International Radio Tube Encyclopaedia p. 208 & 209
-- Original-techn. papers. Data sheet 11/6/47
Taschenbuch zum Röhren-Codex 1948/49
-- Collector info (Sammler)
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Just Qvigstad
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NT39: Manufacturer's Literature
Emilio Ciardiello
More ...
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