1. Short title This Act may be cited as the Spectrum Coexistence Act . 2. Working group on performance criteria for radio receivers (a) Establishment (1) In general Not later than 3 months after the date of the enactment of this section, the Secretary of Commerce, in consultation with the Assistant Secretary of Commerce for Communications and Information and the Commission, shall convene a working group to develop, and periodically update, criteria, ratings, and other measures, including voluntary standards of radio receivers operating in Federal systems. (2) Purpose The purpose of the criteria, ratings, and other measures, including voluntary standards developed by the working group, shall be to encourage the design, manufacture, and sale of radio receivers operating in Federal systems that incorporate appropriate measures to provide interference immunity to ensure that the reasonable current and future use of cochannel or non-cochannel spectrum, including use by non-Federal systems of spectrum designated by the Commission for commercial operations, will not result in receiver operations being seriously degraded or obstructed, or their operations repeatedly interrupted. (3) Criteria In developing the receiver criteria, ratings, and other measures, the working group shall take into consideration the unique technical and operational characteristics of the different Federal systems. (b) Chair