Antique radios, Old Time Radios
I-T-E-V
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| Tube type: |
Triode, vacuum Universal |
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<1925 extraordinarily rare. Production was less
than 100 items. **** |
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| Identical to |
I-T-E-V
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| First year |
Mar.1921
70 Years of Radiotubes and V.
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Successor Tubes
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1921
RMR
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Filament |
Vf 3.5 Volts / Direct / Specified voltage AC/DC |
| Description |
Made by H W Sullivan. Known as "The Improved Three Electrode Valve" - no type number. Made to the R pattern during 1921. Superceded probably because of patent infringement action. With 50V on anode Ia = 1.5mA at Vg=0. Stokes - p 208.
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| Information source |
70 Years of Radiotubes and V.
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Just Qvigstad
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| Data Compliance |
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