[tym]

The repaired transformer is reinstalled and the radio is working well - no sudden and intermittent volume drops (which prompted this repair effort) and improved sensitivity on both bands. So, more proof that the turns ratio in this applicaton is not critical.

I measured the gauge of a piece of wire from the original coil. It had some solder on it which made it hard to get an accurate diameter measurement, but it does seem to be somewhere between AWG 36 and 38, for what it's worth.