18-03-2017, 01:26 AM
I think it might be starting to make sense, Lawrence. Looking at L23 and L24 they are at the IF of 10.7 megacycles. L24 is the tapped secondary. On my ARRL schematic the out of phase voltages are rectified by anodes. Here (Saalburg)it seems a cathode is used? As in the other diagram (where semiconductor diodes are shown). In other words I get the impression the rectifier circuits are a little different in various cases. The main thing is I think it's starting to make some sense. At least I hope so as I spent hours racking my brains.
