Antique radios, Old Time Radios
7561
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Country:
Worldwide
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| Identical to |
7561
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| Similar
Tubes |
Other characteristic (electr. data):
1677
; 6046
; CV553
Multiple differences or of other kind:
25L6GT
; 25L6GT/G
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
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| Was used by |
Technology / Measurement |
| Filament |
Vf 25 Volts / If 0.3 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Wurden vermutlich in Rechenmaschinen der Firma IBM verwendet.
Laut dem Buch Tube Lore II von Ludwell Sibley soll die Röhre möglicherweise auch von Sylvania gebaut worden sein, bis dato sind aber nur Expemplare der Marke Telefunken bekannt.
S. Müller, 17.04.2022
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Tube Lore (II) S. 119
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7561: Telefunken Taschenbuch 1971
Anonymous 15 Collector
More ...
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Just Qvigstad
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7561: Telefunken Taschenbuch 1971
Anonymous 15 Collector
More ...
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Collection of
Collection of a member from D |
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