As excellent as Hans' build instructions are, I feel there is one page which could do with a bit of clarification.? That is the one dealing with winding the trifilar transformer T2.? It is absolutely critical that the start and end of the windings are identified along with the continuity checks with a multimeter. If you get a start of winding mixed up with an end, you will get no phase reversal going into the QSD inputs and it just won't work!? (Strictly speaking, this only applies to the centre-tapped secondary windings, the primary phasing is immaterial.)
I have roughly modified the pages from version 1.04 of the manual, to hopefully make this clear.? There's a couple of pictures attached...
--??
Peter Lee
G3SPL
