@Mary Jones good question — the RF front-end on the MultiNav Pro+ is fully self-contained, so you don't need to add external LNA or PA stages on your side. The amplification and sensitivity optimization that gets you those 5km ground-to-ground and 15-20km man-to-drone numbers are already baked into the module itself.
What you do need to be careful about on your PCB is the antenna feed trace. Treat it as a standard 50-ohm transmission line from the module's RF port to your antenna connector — keep it short, use a controlled-impedance trace (microstrip or coplanar waveguide depending on your stackup), and avoid routing it near switching regulators or digital signal lines. Any impedance mismatch or coupling noise at that section will hurt your receiver sensitivity more than anything else.
If you're using the module on a 4-layer board and want to share your stackup, I can help you sanity-check the trace geometry — that's usually where people lose a few dB without realizing it.
