Polaris Alpha User Manual page 14

For line-of-sight precision guidance applications that do not use Mission Planner with MAVLink
protocol as in figure 4-6, user can configure one Alpha RTK receiver as RTK base and use 6-pin UART
connector port or micro-USB port to connect to a telemetry radio for sending correction data to the
RTK rover. Another Alpha RTK receiver is configured as RTK rover, using pin-2 of the 6-pin connector to
connect to another telemetry radio for receiving correction data from the RTK base, and using pin-3 of
the 6-pin connector to send RTK NMEA message output to the real-time controller.
Setup for Real-Time Controller over Telemetry Radio
RTK
Pin #2 of 6-pin
antenna
TTL connector
Rover
Alpha RTK
TTL mode / switch on B
RTK
antenna
Base
Alpha
RTK
USB/TTL mode / switch on A
Figure 4-6
14
Telemetry
Radio
Real-Time
Controller
Pin #3 of 6-pin
TTL connector
433MHz/915MHz/2.4GHz
Telemetry
Radio
TTL or Micro-USB