Antique radios, Old Time Radios
KF7
|
Country:
Europe
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|
| Identical to |
KF7
|
| Similar
Tubes |
Different connections:
KF4
|
| First year |
1935
Tube leaflet collection E.Erb Analysis by original leaflets (V7)
|
| First Source
(s) |
Jul.1935 : Die Sendung # 7
May.1935 : TR3505-189
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|
Successor Tubes
|
1936
KF4
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|
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|
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