... .Multi-path correction 3.attractive price 4.GNSS antenna UHF datalink X90 GPS ReceiverInformationCHC X90GNSS Receiver combines a dual ... -frequency GNSS receiver, GNSS antenna, UHF datalink, GPRS Module (Optional), Bluetooth® and power source ... Compact and easy mounting GPRS Modem inside (Optional) 1W UHF internal transmitter for Base (Optional) Zero Phase Center Antenna ...