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| Connections |
| Above KY107 66763
without gramophone connection |
| Below: K107 67996
with gramophone connection |
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Picture in Radio-Expres, September 12, 1930 |
Advertisement for the Philips 4000 l.f. transformer
that was used in the KY107 in
Radio-Expres, September 19, 1930 |
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The Erres KY107, picture from an Erres catalogue,
1930 |
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