UM981 RTK GNSS USB Dongle with SMA antenna Antenna:No antenna LT3045 LM31X features:

LT3045 LM31X features:

HAT features:

Built-in active antenna

The upgrade mechanism is designed to be safe: a hardware unit cannot be permanently bricked by a failed update

Advanced interference and spoofing protection (AIM+ Premium)

UM981 RTK GNSS USB Dongle with SMA antenna Antenna:No antenna LT3045 LM31X features:Unicore UM981S UM981 02 All constellation Multi frequency High Precision RTK GNSS receivers The UM981S UM981 02 is a next generation, patented Unicore navigation modules utilizing RTK and INS technologies. They can simultaneously track multiple satellite systems and frequencies, including GPS, BDS, GLONASS, Galileo, QZSS, NavIC, and SBAS. Modules has an integrated inertial measurement unit (IMU) for inter station navigation. UM981S supports tilt