08-28-2014, 09:07 PM
Actually, in my experience, the oscillator in Model 60 sets will sometimes "sort of" work when the outer winding has been rewound in the wrong direction.
Rewinding the outer winding CCW rather than CW cured the problem and restored proper operation.
A note for those who may not have had the pleasure (?) of rewinding a Philco coil - There are guys out there who say you can use any size wire you want. That is pure bravo sierra. The wire gauge ideally should be the same as original; yes, you can use a gauge that is -slightly- off larger or smaller, but not significantly larger or smaller.
A cheap micrometer from Harbor Freight will be an excellent investment for rewinding these coils. Measure the diameter of the original wire with the micrometer and compare the reading to a wire table; then buy a small spool of magnet wire that is as close as possible to your measurement.
And my sincere thanks to Ed Locker for the "blast from the past."
Rewinding the outer winding CCW rather than CW cured the problem and restored proper operation.
A note for those who may not have had the pleasure (?) of rewinding a Philco coil - There are guys out there who say you can use any size wire you want. That is pure bravo sierra. The wire gauge ideally should be the same as original; yes, you can use a gauge that is -slightly- off larger or smaller, but not significantly larger or smaller.
A cheap micrometer from Harbor Freight will be an excellent investment for rewinding these coils. Measure the diameter of the original wire with the micrometer and compare the reading to a wire table; then buy a small spool of magnet wire that is as close as possible to your measurement.
And my sincere thanks to Ed Locker for the "blast from the past."
--
Ron Ramirez
Ferdinand IN
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