Price/Unit : USD 6,205 Description : The Ashtech ProMark 800 from Spectra is a multi-frequency GNSS reciever that provides surveyors with steady and accurate readings in the field. With over 120 channels, this pole-mounted receiver is used as a powerful antenna to track GPS, GLONASS and GALILEO satellites. When combined with a data collector or handheld GPS device, it becomes a full network RTK rover. Advanced Z-Blade Technology With Spectra’s Z-Blade technology and GLONASS and GALILEO satellites, the ProMark 800 receiver can maintain fast and stable RTK positions even when GPS coverage is insufficient or in obstructed locations. This survey GPS device tracks both L1 and L2 frequencies but can be upgraded to track the L5 GPS frequency as well. Quick and Accurate Performance With the advanced technology on board the ProMark 800, GNSS signals can be found in as fast as 2 seconds, allowing for accurate real time results. This GPS survey equipment has a real time kinematic (RTK) accuracy of 1 cm with a range of up to 25 miles.