02-11-2006, 10:58 AM
Looking at my Philco early 30s parts catalogues, they are both 1:4 turns ratio and are used with the same "in" and "out" tube complements (27 driver to p-p 45, 47, 42 or 71-A), so I'd say it should work fine. Both even have the same mounting hole "footprint."
![Icon_biggrin Icon_biggrin](https://philcoradio.com/phorum/images/smilies/icon_biggrin.gif)
Chuck Schwark,
The Philco Repair Bench
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