Standard IKE Device

IKE collected data locations are in WGS84.

IKE+ Device

IKE+ collected locations with an RTK Fix will be in the horizontal and vertical datums that the selected RTK Network is broadcasting in. This information can be determined by contacting your RTK provider. 

If you are using the SmartNet RTK Network by Leica Geosystems, they provide this information on their Support website for each state/region. SmartNet generally broadcasts in NAD83 for both horizontal and vertical datums, however this information should always be verified with the provider for your specific region.