Can anyone tell me what this thing is on my hardtop? It’s about 3-4” square and about 1” high, mounted close to the aft edge of the hardtop on the centerline of the boat behind the radar dome. I assume it’s some kind of sensor or antenna, but I don’t know what for. I don’t have the Sirius radio option on the boat, at least it’s not listed on the build sheet, and Sea Ray doesn’t know what it is. Thanks in advance.