What GPS receivers have been used on DEXI 5, and what mounting locations have been used? Thinking the Holybro M10 ($45) is good low cost std precision receiver. For $75 there is the Ark SAM GPS.
We have tested extensively with ARK GPS, but not the ARK SAM. I don’t see it being a problem. Holybro will work too. Just make sure they have the standard 6 pin JST-GH connector.