Antique radios, Old Time Radios
BTL1553
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Country:
United States of America (USA)
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| Identical to |
BTL1553
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Successor Tubes
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416A
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| Filament |
Vf 6.3 Volts / If 1.18 Ampere |
| Description |
Planar triode, gold plated body; top pin to anode, threaded grid ring, four pin base. Glass spacers. Mu 200, 0.5 W out power at 4GHz. Forced air cooling required.
Bell developmental type, forerunner of the WE 416A.
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| Information source |
-- Original-techn. papers. BSTJ, Oct. 1951
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