Antique radios, Old Time Radios
7A2
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Country:
Great Britain (UK)
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| Identical to |
7A2
|
| Similar
Tubes |
Normally replaceable-slightly different:
AC/Pen
; N40
; Pen4VA
; TE634
|
| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
|
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Listed in information sources as branded Brimar. Listed on page 66 of th Suoplement to "British Radio valves The Classic Years 1926 - 1946" as Micromesh brand. Also available with 7 pin base.
|
| Information source |
History of the British Radio Valve to 1940 Brimar P. 144 & 189
Babani, International Radio Tube Encyclopaedia p. 14 & 15
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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7A2: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
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7A2: Brimar Radio Valves 1936
Adrian Riesen
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):10
Collection of
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