[tgflynn]

The regulation you linked to appears to date to 2010, long after analog phones had been replaced.

18 U.S.C. 2512 may be older but I wonder why such a regulation would have been issued so recently.

Also if this regulation is intended to implement 18 U.S.C. 2512 it appears to be broader in scope than that law. The law only prohibits devices that are "primarily useful for the purpose of the surreptitious interception of wire, oral, or electronic communications". The regulation on the other hand restricts scanners that are capable of receiving such communications. I don't see how a broadband scanner that includes cell phone frequencies along with other bands could be considered to be "primarily useful" for intercepting cell phone communications.