I think I figured out what kind of connector it is. If you look at the attached .pdf, the last item (AY 994) is an adapter cable for Becker GPS units. It has an SMA female on one end and a male WICLIC connector on the other. So, the factory GPS antenna is a Wisi AG 13 with a male WICLIC connector. This means the jack on the BE6811 must be a WICLIC female.