The follow quickguide provides a step-by-step UHF base/rover RTK setup by using Leica SmartWorx Viva for a GS 14/15 GNSS unit.
The guide references a set up using the GS sensors' UHF internal radio (eg. Satel OEM22 (M3-TR3). Other methods such as external Satel/PDL/ADL radio can also be used, and as such, the device settings will need to be changed accordingly.
Please visit the following link to see an article on a Leica Captivate approach.