Sirius XM has obtained a waiver from the FCC to use compression technology on four of its audio channels, even though this means EAS header codes on those channels won’t activate downstream decoders ...

The EAS headers are partial, but contain enough information to mimic the start of an EAS header, using the proper frequencies and data rate,” the group’s Web site stated.

EAS equipment manufacturer Digital Alert Systems examined audio captures of last week’s EAS test and said its information points to an equipment failure in a connection between the FEMA Operations ...