Antique radios, Old Time Radios
7021
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Country:
Great Britain (UK)
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| Identical to |
7021
= NS3
= CV1200
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| Similar
Tubes |
Normally replaceable-slightly different:
202_Marconi
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=E)
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| Filament |
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| Description |
200mA stabilized at 120 to 200V.
British Admiralty store reference for NS3/CV1200 ballast.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
-- Original-techn. papers.
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Just Qvigstad
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