[NJARC] Philco 70 Question Re: AC/DC

[Marty Friedman]

Hi lisa,
The DC set should have the same coil, probably also NG.....
The following is a quote from my Philco 70 restoration diary written 10 
years ago......
Marty F.

 I removed the open coil from the chassis. The thin primary winding was 
moldy and had the telltale green color of copper oxide. Sure enough, the 
wire was nearly reduced to powder. The secondary winding, on the other hand, 
looked fine. The bad winding had about 64 turns of what appears to be 36 
gauge cotton covered wire. I knew that replacing that would be difficult, so 
I decided to seek an alternative. I found in the junk pile an I.f. 
transformer from an AA5. This used a type of cotton covered litz wire that 
had been wound with a wax coating. This proved to be very easy to wind as 
the wax was still sticky enough to keep the wire from raveling.