In a memo released on Friday, the National Space-Based Positioning, Navigation and Timing Executive Committee said the nine federal agencies that make up the body have concluded unanimously that none of LightSquared’s proposals would overcome the network’s interference with GPS technologies. The announcement comes as a crushing blow for the startup, which is looking to build an LTE network with the company’s 1600MHz frequency. Preliminary testing last year showed that LightSquared’s planned network interfered with GPS. After a handful of rebuttals, changes, and more testing, the government has decided to pull the plug and request no further testing. The Federal Aviation Administration also concluded the network would interfere with aircraft safety systems.”Based upon this testing and analysis, there appear to be no practical solutions or mitigations that would permit the LightSquared broadband service, as proposed, to operate in the next few months or years without significantly interfering with GPS. As a result, no additional testing is warranted at this time,” the memo said. LightSquared slammed the decision, claiming the agency has a biased agenda that is in favor of the GPS industry. Late last year, LightSquared reiterated that the GPS industry is at fault and it demanded approval from the FCC to begin deploying its network.