RoboDot Touch RTK GPS for drone surveying can be purchased with a 900mhz radio enabled for Rover, Base, Repeater applications.  The radio can also be activated at a later date. 
 
Features:
Dual-Band L1/L2 GPS GLONASS Galileo Beidou Base Station with NTRIP Caster over WiFi
GPS Rover Mode with NTRIP client
Internet access via internet access points over WiFi
Supports RTK and PPK Workflows
Multi-constellation GNSS: GPS, GLONASS, Galileo, BeiDou
8GB memory for observation logging
1/4-20 Threaded tripod mount
Touch Screen interface
Web interface accessible from any web device
8+ hr runtime
Optional 900mhz radio feature for Rover/Base/Repeater operations.
 
Kit Includes:
RoboDot Touch
1.5ft USB C cable
1A USB Wall Cube
12-month manufacturer warranty 
RoboDot Windows Utility for PPK workflows
Optionally purchase with 900mhz Radio features enabled or enable any time
 
Product Manuals:
RoboDot Touch Guides