There are many potential applications for the USA’s CBRS spectrum in the 3.5 GHz band, but the most conventional is fixed wireless access (FWA), and that is likely to offer the first indications of the economics of the unlicensed portion. The CBRS band (Band 48) has been opened up by the FCC with a three-tier priority system. While federal incumbents have guaranteed access, they use the spectrum only sporadically and in limited areas (mainly for naval radar), so there is plenty of capacity available for the other two tiers –PAL (Priority Access Licensed), whose licences will be auctioned this year; and GAA (General Authorized Access). Some WISPs already use spectrum in the 3.65 GHz band, and will be able to…