03-10-2009, 08:20 AM
Comparing the two schematics, it's obvious that there are first audio amp bias component differences, many differences in the RF/IF stages component-wise, many AVC line component differences - (delayed AVC in the 625), 620 has AVC line to IF tube, 625 does not, etc.
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
