A hunt for cable's CBRS deployments turns up... not much

US cable companies Comcast and Charter Communications have long suggested that they will build their own small-scale public wireless networks using their 3.5GHz CBRS spectrum holdings. Doing so, according to the companies, will help them reduce their MVNO payments to Verizon. But so far there are few signs they're actually doing that. Curious, I started asking around with the network-monitoring companies like Ookla that track this kind of stuff. Most declined to comment, but OpenSignal shared its findings. The result? The commercial mobile customers of Comcast and Charter showed no additional time on CBRS when compared with the customers of Verizon. If Comcast and Charter had extensive CBRS operations of their own—that were commercially available—their customers would presumably show much more time on CBRS.