Antique radios, Old Time Radios
double-ended-triode
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Country:
Austria
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| Identical to |
double-ended-triode
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
Base on each end.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Direct |
| Description |
This tube is a double ended type with a tubular bulb and a nickel plated B4 base at each end. It is approximately six inches long. Development of this tube is attributed to Josip Sliskovic in the book " "Historic Vacuum Tubes for Telephony and Radio" by Franz Pichler. Slipkovic worked for many years with Kapsch from 1927. A date for design or manufacturer is unknown but it may be a development of his before his interests at Kapsch started.
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| Information source |
-- Collector info (Sammler) Historic Vacuum Tubes for Telephony and Radio: Pic
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Just Qvigstad
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