The anchor light will not cause any problems with the radar--the scanner width is 18" (As I remember the one your have), and there is only.a "Shadow" for an extremely short period of them--so the radar "sees" around it. Even sailboat masts are not an issue, of course depending on the cross section of the mast.
The light is well clear of the radar dome, looking at your photos--you are good to go--enjoy.
The light is well clear of the radar dome, looking at your photos--you are good to go--enjoy.