The first batch of the custom shielded flex cables came and they fit and work in the setup. During testing I could cause WiFi interference only when holding the antenna close to the display.
But then I put the heatsink on and the problem came back! So running the cable between heatsink and CPU module makes it susceptible to WiFi interference.
Running the new cable over the heatsink instead of under it made the issue go away here. I think it’s fine to do that with the new cable because it is more robust and has a shorter stiffener that doesn’t cause mechanical issues near the connectors.
If you would like to try this new cable, we’ll send it to you for free, including a Molex antenna with longer cables and the acrylic to mount it over the SD card slot. To get this package, please write to support@mntre.com and include your LS1028A MNT Shop order number. Also, please tell us if you need the new acrylic and longer Molex antenna. Some of you already have it preinstalled by us.