Hi @405nm, I have been trying to get that very thing to work for a while with nRF51/52 boards. Unfortunately the licensing for the ANT softdevice makes it very hard to integrate into these systems as the softdevice (and headers) cannot be shared (at least last time I asked they said that.) That means the much easier solution is to purchase the D52 modules and interface with the radios externally similar to the XBees.