I noticed I was getting sub-par GPS sat numbers with my MōVI M5 whilst under my ALTA. I figured maybe the Maxtenna might help according to the marketing literature. Coincidentally, I also installed the Wi-fi adapter, but that shouldn't matter. Basically, the MōVI seems to be doing OK, but I never see the "GPS LOCK" light up, even though the ALTA and MōVI were in an open field with nothing around. The ALTA was showing 10-12 sats and had a good lock. The MōVI was showing 9 sats, and I let it sit for at least 10 minutes powered up, and it never got the "LOCK" to light up. I went ahead and flew it, and it seemed to do OK. Any thoughts? I'm running FW 4.0.1.