Antique radios, Old Time Radios
H2
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Country:
Great Britain (UK)
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Brand:
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| Tube type: |
Triode, vacuum Audio Frequency |
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| Identical to |
H2
= CV2977
= 210RC_Cossor
= 210RC
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| Similar
Tubes |
Normally replaceable-slightly different:
H210
; H210_Hivac
; PM2HL
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.1 Ampere / Direct / Battery = |
| Description |
High-gain triode, mu 35, 1.0mA/V.
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| Information source |
History of the British Radio Valve to 1940 p. 151
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
L'ABCDaire des lampes de TSF des jeunes années
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H2: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad
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H2: osram wireless guide 1931
Giuseppe Antonio Tusini
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):9
Collection of
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