Antique radios, Old Time Radios
R8
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| Tube type: |
Triode, vacuum |
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<1925 very rare. *** |
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| Identical to |
R8
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| Similar
Tubes |
Normally replaceable-slightly different:
TMC
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| First Source
(s) |
1916 : British Radio Valves - The Vintage Years: 1904-1925
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| Predecessor Tubes |
TMC
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| Base |
Europe 3-Pin B3 (Eu H)
2 Top contacts.
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| Was used by |
Military and/or Government |
| Filament |
Vf 4 Volts / If 0.7 Ampere / Direct / Specified voltage AND current AC/DC |
| Description |
Horned High Frequency valve like the french TMC. First made 1916. Osram GEC and Mullard (1922). UK Navy type NR8
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Dimensions (WHD)
incl. pins / tip |
x 105 x 53 mm / x 4.13 x 2.09 inch |
| Weight |
70 g / 2.47 oz |
| Information source |
Saga of the Vacuum Tube, Tyne page 221
British Radio Valves - The Vintage Years: 1904-1925 pages 40 & 79
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Just Qvigstad
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