Ligado has worked to address the various concerns around potential sensitive receivers in adjacent bands. The company has collaborated with the FAA to protect certified aviation GPS—just the latest in a long line of work with GPS device manufacturers to restructure the band and allay concerns. The company has relinquished the originally proposed 1,545–1,555 MHz downlink to expand the lower Global Navigation Satellite System (GNSS) guard band, and has significantly lowered power levels across the board. The most significant concession in the firm’s recently proposed amendments would lower the terrestrial base station power more than 99.3 percent from the original modification applications.

Read the Information Technology and Innovation Foundation’s full report here.