Antique radios, Old Time Radios
ZM1021
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| Tube type: |
Numerals- and Symbols indicating tube Indication |
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| Identical to |
ZM1021
= Z521M
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| First Source
(s) |
Oct.1963 : - - Manufacturers Literature Radiotechnique Memento tubes 10/1963
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| Base |
13 pin or wire all glass N17S-1, B13B
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| Was used by |
Technology / Measurement |
| Filament |
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| Description |
Formerly Z521M. B13B base.
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| Information source |
- - Manufacturers Literature Telefunken Taschenbuch 1971
- - Manufacturers Literature Radiotechnique Memento tubes 10/1963
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ZM1021: Telefunken Taschenbuch 1971
Anonymous 15 Collector
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Just Qvigstad
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ZM1021: Telefunken Taschenbuch 1971
Anonymous 15 Collector
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Collection of
Collection of a member from D |
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