I recently bought a 3DR radio module (base + air) to use it in a ArduBoat project . It seems that the ground module is not linking with the air one, no communication between those in anyway (green leds on both modules are blinking). I tried both with firmware version 1.9 and 1.7, no luck.
Attached photo with the settings for both modules.
Any help is appreciated.
Air Module settings:
Ground module settings:
Both of them: