Antique radios, Old Time Radios
HK-5990
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Country:
United States of America (USA)
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| Identical to |
HK-5990
= VG-54
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
Sidecontact and top contact.
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| Filament |
Direct |
| Description |
Ionization gauge. 200µA/micron sensitivity at 5mA grid drawing. Tantalum grid and plate; 7/16" O.D. glass tubulation near the top.
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| Information source |
-- Original prospect or advert Electronics, April 1951
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