The GeoExplorer2005 series handheld has an internal antenna, which is suitable for use in most conditions. You can also connect a Hurricane or an external patch antenna for when you work in a vehicle. For improved yield under canopy, you can use a Hurricane antenna, or a patch antenna with a ground plane.
The handheld can take up to two seconds to detect that an optional external antenna has been connected or disconnected.
Does the Trimble GeoExplorerXH2005 or GeoExplorerXT use theSMB A or SMB B or BNC connector?
Hurricane Antenna Specifications