US firm XM Satellite Radio said US regulators have requested additional information on its radio receivers that also contain FM transmitters, according to a Reuters report.
The Reuters report said XM and rival Sirius Satellite Radio in recent months have instructed some of their manufacturers to stop making radios equipped with wireless transmitters.
Such radios are capable of receiving satellite signals and transmitting them to traditional radios, the report said.
XM, which was originally contacted by the FCC in April, said the FCC on August 7 requested information on the company's Sportscaster, Roady XT, MyFi, Airware, Tao and Roady 2 devices, the report said.
XM said it has requested its manufacturers suspend production of these units. It plans to 'respond promptly' to the FCC request.
Sirius earlier said that two of its radio manufacturers had resumed making and distributing radios previously found not to meet federal rules.
Sirius said the manufacturers got new grants of authority after the FCC confirmed the devices were in compliance, the Reuters report further said.
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