Antique radios, Old Time Radios
GR20-12
Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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Filament |
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Description |
1 Glimmstrecke, max. Zündspannung 200 V, mittl. Brennspannung 150 V, I ca. 10...50 mA, Ri ca. 300 Ohm.
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Tube prices |
5 Tube prices (visible for members
only)
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Information source |
Röhren-Taschen-Tabelle, (Franzis RTT) RTB Beier (B2) 1962
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GR20-12: RTT Schwandt
Günther Stabe † 19.8.20
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Just Qvigstad
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GR20-12: tube data book
Vaclav Pojer
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
Collection of
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