Antique radios, Old Time Radios
KT221S
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Country:
Germany
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| Identical to |
KT221S
|
| Similar
Tubes |
Normally replaceable-slightly different:
Bi/904
; BiII
Other class quality (otherwise equal):
REN904
|
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
|
| Was used by |
Technology / Measurement |
| Filament |
Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Industrial version of the REN904.
Text in other
languages (may
differ)
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|
KT221S: Telefunken Werkstattbuch
Wolfgang Bauer
|
Just Qvigstad
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| Data Compliance |
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