Antique radios, Old Time Radios
T30_MO
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Country:
Great Britain (UK)
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Brand:
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MO Valve Co. Ltd.; GB |
| Tube type: |
Transmitting Triode, air cooled Power/Output |
| |
<1925 very rare. *** |
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| Identical to |
T30_MO
|
| First year |
1922
Saga of the Vacuum Tube, Tyne page 381
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| First Source
(s) |
1918 : British Radio Valves - The Vintage Years: 1904-1925 p.69
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
|
| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 7 Volts / If 1.8 Ampere / Direct / Specified voltage AND current AC/DC |
| Description |
1000V anode voltage; mu 35. 30 watts. First tbe made was tubular measuring 135 mm length and 60 mm width. Design changed to "R" style in 1923/24
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Dimensions (WHD)
incl. pins / tip |
60 x 135 x mm / 2.36 x 5.31 x inch |
| Information source |
- - Manufacturers Literature Marconi catalog No. 520, Sept. 1928
- - Manufacturers Literature M.O.Valve catalog 1923
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Just Qvigstad
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T30_MO: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
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