Radios antiguas y Radios de Colección
2A7S
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País:
Estados Unidos
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Marca:
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| Tipo: |
Pentagrid-Converter (Heptode) Frequency converter Controlling (mu) |
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| Idéntica a |
2A7S
= CV787
= Ut-2A7
= PH2A7
= PH2A7
= Ut2A7
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| Válvulas similares |
Other shape (e.g. bulb type):
2A7
; G-2A7-S
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| Base |
7-Pin-Base U7A = small, old, USA (Codex=Mh)
Top contact with a cap.
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 2.5 Volt / If 0.8 Ampere / Indirect / Specified voltage AC/DC |
| Descripción |
Which differences of characteristics between 2A7S and 2A7 ?
Babani's International Radio Tube Encylopedia gives a different Ig2 current as a 2A7, but Brans Vademecum 1945 and 1961 gives as electrical equivalent.
The shield on this tube is metallised paint. Replacement tubes made by National Union, Raytheon and Sylvania utilised a sheet metal shield.
Texto en otros idiomas
puede diferir
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Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip |
x 116 x 38 mm / x 4.57 x 1.50 inch |
| Peso |
39 g / 1.38 oz |
| Precios de válvulas |
1 Precios de válvulas (visible
solo para miembros)
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| Literatura |
Taschenbuch zum Röhren-Codex 1948/49
Babani, International Radio Tube Encyclopaedia
-- Collector info (Sammler)
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2A7S
Emilio Ciardiello
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Just Qvigstad
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2A7S: Babani 1949-1951
Patrice Zeissloff
Mas ...
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Número de
modelos en Radiomuseum.org con esta
válvula:2
Colección personal de
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