I appreciate your kind help. I brought the Serial Radio Telemetry kit instead of Digi XBee for testing. I followed the sparkfun tutorial and connect the pins as listed below.
The base board can send out the correction message and the radio itself can receive it. However, the rover board can not receive the message. I started a new topic with trouble shooting details. Any comments?
- Radio 5V - RTK 5V
- Radio TX - RTK RX2
- Radio RX - RTK TX2
- Radio GND - RTK GND