In a filing with the Securities and Exchange Commission, XM Satellite Radio revealed that the FCC has asked for information on its terrestrial repeater network. The repeaters supplement the satellite radio signal, ensuring that the service works in areas with poor satellite coverage. However, the FCC is concerned that the characteristics of some repeaters are different from the data that was originally submitted by XM when the FCC approved the system. XM is seeking approval to continue running the network.

The satcaster has met with FCC staff about the matter, but the company did not say what information the FCC requested in its inquiry, according to Business Week. The issue may result in XM paying a fine or making "adverse changes" to its network of repeaters or transmission towers, which could harm the service, according to the filing.