Antique radios, Old Time Radios
R_Moorhead_H
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Country:
United States of America (USA)
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| Identical to |
R_Moorhead_H
|
| Similar
Tubes |
Other shape (e.g. bulb type):
R_Moorhead
; VT32_Moorhead
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| Predecessor Tubes |
R_Moorhead
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Military and/or Government |
| Filament |
Vf 4 Volts / If 0.7 Ampere / Direct / Battery = |
| Description |
A life of 800 hours was expected when filament was operated at 4 volts. During WWI Moorhead supplied European based vacuum triodes, marked as R type, to the British Army. British also designated these tubes as VT32.
The R_Moorhead_H was a general purpose vacuum triode with spherical bulb, horizontal electrodes and a visible R marking, similar to other British R types. This can be considered a transition from the early vertical electrode R_Moorhead to the later VT32_Moorhead, characterized by a quasi-cylindrical envelope.
The base of this tube was made by the Shaw Insulator Company, who were associated with Moorhead Laboratories.
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Dimensions (WHD)
incl. pins / tip |
54 x 109 x 28 mm / 2.13 x 4.29 x 1.10 inch |
| Weight |
41 g / 1.45 oz |
| Information source |
-- Collector info (Sammler)
Saga of the Vacuum Tube, Tyne Page 170
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R_Moorhead_H: Fin Stewart
Fin Stewart
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Just Qvigstad
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Collection of
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