I am interested in using the RTK Express to validate that a GPS antenna installation is adequate. Adequate means that it is functional (i.e. signal can be received over the coaxial cable from the antenna) and that the position accuracy is good enough for a given application. The device in its current form can do that but there are some things like the bluetooth radio that I would want to remove from the product. This is a proprietary application so I don't want to share too much in the forum but I would like to speak to someone from Sparkfun about customizing the product for a target volume of a few thousand devices. I emailed the general contact address about a week ago and I have not heard anything and I am not sure how else to engage the team.