Antique radios, Old Time Radios
GI-10
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Country:
United States of America (USA)
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| Identical to |
GI-10
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| Similar
Tubes |
Other base:
GI-21
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Industrial |
| Filament |
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| Description |
National Union introduced its 'Inditron' line of numeric indicators in 1954, well before the registration of the Nixie tubes by Haydu Brothers.
Each digit from 0 to 9 was connected to one of the 10 base pins. The base was compatible with any standard Noval socket type, with center shield used for the 10th central pin. No common electrode, but the digit to light-on had to be driven to ground potential while other digits acted as anode.
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| Information source |
-- Collector info (Sammler)
- - Manufacturers Literature
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