From my 1997 Hylas, all electronics appear to be original raytheon. It has two seatalk connectors, and a round 6 pin connector. No markings on it, just the CE certification and made in england. The seatalk connectors were ganged together to wire in with the other instruments. I haven't traced the 6 pin connector line yet..
It's mounted on a plane parallel to the centerline, just forward of the mast.
Am trying to debug some other issue (problem with the fluxgate compass), so I'm learning how the system is put together. I'd like to know what this part is.