Ligado's LTE/GPS Test Results To Be Filed in May

Roberson & Associates' testing of LTE interference with GPS is complete, with the final results likely to be filed with the FCC in early May, Ligado Networks said. In an ex parte filing posted Friday in docket 12-340 about a phone call with Wireless Bureau Associate Chief Charles Mathias, Ligado said it expects to file a final report on the relationship between a 1 dB change in carrier-to-noise density and GPS device interference, and details on its testing processes and methodology. Ligado said earlier the testing was proving signals from its proposed LTE network won't interfere with GPS navigation devices (see 1602250032).