is there a pin diagram for the SparkFun ZED-F9R Board that describes when each of the hookup pins represent. For example i don’t see a TX1 pin on the board.
Yep, see SparkFun GPS-RTK Dead Reckoning ZED-F9R Hookup Guide - SparkFun Learn (you can also flip the board to see more silkscreened labels
There’s a note here too GPS-22693 (ZED-F9R) Hookup Guide Rx/Tx Reversed? - #4 by PaulZC