The US government is warning that groups could rely on radio equipment as an alternative to social media to plan future criminal activities.

In a stark warning Sunday, the Federal Communications Commission's enforcement bureau said people coordinating or conducting criminal activity over radio waves are breaking the law.

"The Bureau has become aware of discussions on social media platforms suggesting that certain radio services regulated by the Commission may be an alternative to social media platforms for groups to communicate and coordinate future activities," the FCC said in its warning Sunday. "Individuals using radios in the Amateur or Personal Radio Services in this manner may be subject to severe penalties, including significant fines, seizure of the offending equipment, and, in some cases, criminal prosecution."

The FCC licenses certain signals for people to broadcast over radio waves. Those messages are generally protected by the US Constitution's First Amendment. But the FCC reminded radio licensees and operators that it is prohibited to transmit "communications intended to facilitate a criminal act." People are also not allowed to encode their messages to obscure their meaning from law enforcement.

https://edition.cnn.com/2021/01/17/tech/fcc-radio-extremist-social-media-attack/index.html