I may have asked about this on here before, but does anybody have an MC163, it will be marked as such, but it goes on the end of the phenolic tube that exits out the side of a B17 that the trailing wire antenna passes through.  The MC163 is the electrical connection for the RF to the wire, and mounts on the rod end inside the plane.   Pic attached.  Just to show it all, the other pics are of the whole assembly, (minus MC163) and consist of the tube with metal bell end labelled F10,  the fuselage metal adapter FT470, and the wooden ball held inside the FT470, the MC 476.  Maybe the wood ball was made by the Bocce Ball company, who knows.  The last drawing is the blueprint for the whole thing in the plane, and may be too big to post here,

Charlie W4MEC in NC