A simple mast, constructed from three 3D-printed parts and a 10 mm aluminum tube, elevates the Holybro Pixhawk 4 GPS module well above sources of interference. The GPS module consists of a Ublox M8N and a compass.
GPS Mast Construction
The bottom of the mast uses the bolt pattern on the top flange of the electronics enclosure for simplicity. The GPS mast itself consists of a simple cup with 4 stainless steel M3 threaded inserts to secure the lid. A generous dollop of silicone sealant around the lid and the cable hole keeps the GPS module nice and dry. The mast keeps the GPS module dry and the thickness and infill in the lid allows the LED indicators to be seen.
Other Considerations
Keep in mind that the safety switch must be disabled (BRD_SAFETYENABLE = 0), as it is no longer accessible. The cable enters the enclosure through an IP68 cable gland. The GPS cable was cut in half and jumper wires were soldered to either end to extend the length a few centimeters and to allow the enclosure to be opened and closed easily.