Hide copper antenna surface underneath soldermask instead of plating it.

hardware/modules/elabdev.pretty/Johanson_0868AT43A0020E_Down.kicad_mod

@@ -17,9 +17,9 @@
   (fp_line (start -6.8 -1.7) (end 4.8 -1.7) (layer F.Fab) (width 0.12))
   (pad 1 smd rect (at -3.5 0) (size 1 1.8) (layers F.Cu F.Paste F.Mask))
   (pad 2 smd rect (at 3.5 0) (size 1 1.8) (layers F.Cu F.Paste F.Mask))
-  (pad 1 smd rect (at -5 0) (size 2 1.2) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at 3.75 3.45) (size 0.5 5.1) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at 0.45 5.75) (size 7.1 0.5) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at -2.85 4.5) (size 0.5 3) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at -0.55 3.25) (size 5.1 0.5) (layers F.Cu F.Mask))
+  (pad 1 smd rect (at -5 0) (size 2 1.2) (layers F.Cu))
+  (pad 2 smd rect (at 3.75 3.45) (size 0.5 5.1) (layers F.Cu))
+  (pad 2 smd rect (at 0.45 5.75) (size 7.1 0.5) (layers F.Cu))
+  (pad 2 smd rect (at -2.85 4.5) (size 0.5 3) (layers F.Cu))
+  (pad 2 smd rect (at -0.55 3.25) (size 5.1 0.5) (layers F.Cu))
 )

hardware/modules/elabdev.pretty/Johanson_0868AT43A0020E_Up.kicad_mod

@@ -17,9 +17,9 @@
   (fp_line (start -6.8 -6.7) (end 4.8 -6.7) (layer F.Fab) (width 0.12))
   (pad 1 smd rect (at -3.5 0) (size 1 1.8) (layers F.Cu F.Paste F.Mask))
   (pad 2 smd rect (at 3.5 0) (size 1 1.8) (layers F.Cu F.Paste F.Mask))
-  (pad 1 smd rect (at -5 0) (size 2 1.2) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at 3.75 -3.45) (size 0.5 5.1) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at 0.45 -5.75) (size 7.1 0.5) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at -2.85 -4.5) (size 0.5 3) (layers F.Cu F.Mask))
-  (pad 2 smd rect (at -0.55 -3.25) (size 5.1 0.5) (layers F.Cu F.Mask))
+  (pad 1 smd rect (at -5 0) (size 2 1.2) (layers F.Cu))
+  (pad 2 smd rect (at 3.75 -3.45) (size 0.5 5.1) (layers F.Cu))
+  (pad 2 smd rect (at 0.45 -5.75) (size 7.1 0.5) (layers F.Cu))
+  (pad 2 smd rect (at -2.85 -4.5) (size 0.5 3) (layers F.Cu))
+  (pad 2 smd rect (at -0.55 -3.25) (size 5.1 0.5) (layers F.Cu))
 )