[keith49vj3]

Thanks Rod, That makes perfect sense. Is there a way to edit my post? It's a Philco 50-925 and not a Philco 50-295. Did Philco ever produce their own service info or did they farm it out to Riders and SAMS? Should there be continuity between the four antenna wires? There is a low resolution photo of the top of the radio chassis on the radiomuseum website. The photo appears to show two wires going to "A", on wire going to "B" and the forth going to the tube of the tuning condenser. But its not clear what attaches to D.
Getting closer.
Keith