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Tube type: |
PENTODE Audio Frequency |
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Tube ID = 400
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| Identical to |
EF804
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| First Series |
1952 Siehe Forumsbeitrag von Herrn Knoll |
| First Source
(s) |
Apr.1952 : Funk-Technik (FT) # 7
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| Base |
Noval, B9A
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| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.2 Ampere /
Vf 6.3 Volts /
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| Dimensions (WHD) |
22 x 60 x mm / 0.87 x 2.36 x inch |
| Weight |
17 g / 0.60 oz |
| Tube prices |
4 Tube prices (visible for members
only)
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Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
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J.K.
Jürgen Küting
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RTT 1974 (Franzis) 13. Auflage
Martin Renz
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Telefunken Taschenbuch 1971
Anonymous 15 Collector
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