
Introduction
3
Intr
od
ucti
on
External GPS Antenna
The external GPS antenna, Figure 1.3, is required for surveying functions. While the built-in
antenna is sufficient for navigation, a more sophisticated external antenna is required to obtain
quality data for precision surveying. The external GPS antenna is the physical data collection
point for the raw GPS satellite data. For this reason, it must be accurately positioned over the
point to be surveyed, using a standard tripod or fixed-height GPS tripod.
External Antenna Cable
The external antenna cable, Figure 1.4, connects the ProMark2 receiver to the external
antenna. The small end of the cable connects to the ProMark2 through the back of the field
receiver bracket. The large end of the cable screws onto the external antenna.
Figure 1.3
External GPS Antenna
Figure 1.4
External Antenna Cable
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