AIS base stations, we take this opportunity to clarify that maritime support stations are authorized to undertake on-land testing and installation of AIS equipment pursuant to Section 80.653(b)(2) of the Commission's Rules, 47 C.F.R. § 80.653(b)(2), and may transmit on Channels 87B and 88B for that purpose on a secondary, non-interference basis to operational maritime communications. See 47 C.F.R. § 80.655(a)(2), (b). See Further Notice, 21 FCC Rcd at 8935-36 ¶¶ 62-64. Id. at 8935 ¶ 62. For additional background information regarding Class B AIS equipment, see NTIA Comments at 11-12. See IEC 62287-1, ``Maritime navigation and radio communication equipment and systems - Class B shipborne equipment of the automatic identification system - Part 1: carrier-sense time division multiple access (CSTDMA)