Antique radios, Old Time Radios
PenA1
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Country:
Great Britain (UK)
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| Identical to |
PenA1
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| Similar
Tubes |
Normally replaceable-slightly different:
4PenM
; PT4
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
1934 : British Radio Valves - The Classic Years: 1926-1946 Supplement, p. 66
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC |
| Description |
Po=2.7W; Typ:- Va=250; Ia=32mA; Vs=250; Is=6.5mA; gm=3mA/V; Rload=8k.
Tube also made with Micromesh brand.
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| Information source |
Babani, International Radio Tube Encyclopaedia p. 126 & 127
- - Manufacturers Literature
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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PenA1: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
More ...
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Just Qvigstad
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PenA1: 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):3
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