There are two unlabeled pins on UART2 port of GPS-RTK2 Board, are they GND?
According to the schematic at https://cdn.sparkfun.com/assets/9/a/0/0 … ED-F9P.pdf they are not connected to anything. If you plug in a standard FTDI cable, they would be DTR and CTS from the computer.
/mike
Thank you!