Antique radios, Old Time Radios
NR7X
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Country:
Great Britain (UK)
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Brand:
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| Tube type: |
Triode, vacuum Audio Frequency |
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<1925 very rare. *** |
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| Identical to |
NR7X
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| Base |
IS-1 (Interservice, UK 1918)
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| Was used by |
Military and/or Government |
| Filament |
If 0.57 Ampere / Direct / Battery = |
| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Page 119
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Collection of
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