Antique radios, Old Time Radios
MC300R
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Country:
United States of America (USA)
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| Identical to |
MC300R
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| Similar
Tubes |
Other characteristic (electr. data):
30
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Military and/or Government |
| Filament |
Vf 2 Volts / If 0.06 Ampere / Direct |
| Description |
This tube was made for the US Marine Corps in 1931. It had 10 meghoms or more, interelectrode resistance as measured with a 500-V megger. It was used as a detector or amplifier. It as similar to a type 30.
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Dimensions (WHD)
incl. pins / tip |
x 103 x 34 mm / x 4.06 x 1.34 inch |
| Weight |
38 g / 1.34 oz |
| Information source |
Tube Lore (II) p. 183
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MC300R: Fin Stewart
Fin Stewart
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Just Qvigstad
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