Spectra Precision Survey Pro v4.6 Recon and Nomad User Manual - Manual (Page 343)

Basic GPS Module
333
RTK Data Modem Configuration
This section explains how to configure the type of data link to use
between the base and rover. This is either base to rover RTK GPS
using a radio modem, or Internet delivered base corrections using a
cellular phone as a data modem.
Using a Radio Modem
Using a radio modem as the data link from base to rover is the most
common configuration.
1. Select Base/Rover Radio RTK.
2. The Use CMR Station Index should be checked in
situations where more than one base is in range
of the rover, allowing it to distinguish one from
the other. Enter a unique value from 0-31 in the
corresponding field.
3. Tap Change Radio Settings if you need to
configure the radio. The current settings are
displayed in the upper portion of the screen.
Make any necessary changes in the lower
portion of the screen and tap Set to send the
changes to the radio.