11-04-2010, 06:36 PM
I've since bought a micrometer, so I can now determine the exact gauge of wire needed for a particular application. That having been said, I have found that most Philco coils have primaries using 36 gauge wire (sometimes 37 or 38), and secondaries using either 31 or 32 gauge (occasionally 34 gauge).
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Ron Ramirez
Ferdinand IN