; members The Chair of the working group shall be the Secretary of Commerce and shall include representatives from the following: (1) The Assistant Secretary. (2) The Commission. (3) The telecommunications industry. (4) Academia. (c) Publication of criteria, rating, and other measures Not later than 18 months after the date on which the working group is established pursuant to subsection (a)(1), the Commission and Assistant Secretary shall publish the criteria, ratings, and other measures developed pursuant to subsection (a)(1) on a publicly accessible page on the website of the National Telecommunications and Information Administration and in the Federal Register. (d) Periodic review and update Not less frequently than every 4 years, the working group shall review and update, if appropriate, the criteria, ratings, and other measures published pursuant to subsection (c). Any such update shall be published as described in subsection (c) not later than 14 days after the date on which the update is completed. (e) Savings clause No action taken by the working group, the Assistant Secretary, or the Commission pursuant to this section shall be used to impose any obligation on manufacturers with respect to any radio receivers designed to operate exclusively in non-Federal systems. (f) Definitions In this section: (1) Assistant Secretary The term Assistant Secretary means the Assistant Secretary of Commerce for Communications and Information. (2) Commission The term Commission means the Federal Communications Commission. (3) Federal system The term Federal system means a system of radio stations belonging to and operated by the United States that receives radio frequency signals on spectrum that is allocated exclusively for Federal Government use or allocated for both Federal and non-Federal operations.