The application is designed to setup JAVAD GNSS HPT radios as a Repeater. Repeater radio extends range of UHF signals between RTK base and RTK rover with the needle repeater radio. After installation just connect a radio with cable to microUSB connector of your Android device (standard USB-to-microUSB cable is required) and select the application to start.
After connection the application reads radio parameters and shows controls to modify them. Press Apply button to setup the radio.