>During the term of this Agreement, Member must hold a valid Amateur Radio Service license issued by the Federal Communications Commission (FCC) under Part 97 of its Rules and Regulations, 47 C.F.R. Part 97 (Part 97). Member may operate a Station only in full compliance with all provisions Part 97 as they pertain to the class of license Member holds. Included in these provisions are limitations on frequency bands and sub-bands, modes, output power, third-party operating and traffic agreements, operating procedures, non-commercial use, operating procedures, drug use, and station identification.
Looks like you'd need to be licensed in the US. I'm in Australia and the classes of licenses are slightly different.
That said, I'd love to be able to sign up for a cheaper listen/scan only plan on this site.