Re: Winding quality of tricoils
Here are three more pictures of my v5 board:
All of the transformers as supplied by HFSignals are trifilar wound. Not all windings are used in all locations. This is on the schematic from HFSignals:
That is the case for the input and output of the SSB crystal filter. You will have to zoom in to see that all are tifilar.
Hope this helps.