I acquired a tactical LTE base station on eBay that had a fairly clean copy of Druid Raemis in a VM on it. After some wrangling and reverse engineering, that VM is now the core of my home CBRS LTE network with a license-free band 48 radio in my house.
Using a personal LLC for projects I was able to gain access via Google SAS. Because I'm using Class A CBSDs indoors, I don't need a CPI to sign off on the registration.
Why? Cordless phones with a second SIM card. ;)