Comments relating to recent posts:
1. @Roger do you have a photo of your S21 jig? (By the way, I initially thought your S11 jig was copper sheet with a non-conductive backing board to attach the copper sheet to -- instead you clarified it is copper-clad PCB. Same idea I guess, but on a different scale.)
2. @Roger - how will you make the > < V's you mentioned? I assume the points of the V's won't touch, but will be close to each other. Does the point need to be centered vertically or could one surface just be cut down with the corner of a file to a sort-of V shape?
3. @Donald, I don't understand this 180 degree positioning. Would that be end-to-end? How much spacing (in mm) between them?
