DA 21-382 April 1, 2021 OFFICE OF ENGINEERING AND TECHNOLOGY ESTABLISHES ET DOCKET NO. 21-115 ET Docket No. 21-115   By this Public Notice, the Office of Engineering and Technology establishes ET Docket No. 21-115, which is captioned “Amendment of Parts 15 and 74 of the Rules for Wireless Microphones in the TV Bands, 600 MHz Guard Band, 600 MHz duplex Gap, and the 941.5-944 MHz, 944-952 MHz, 952.850-956.250 MHz, 956.45-959.85 MHz, 1435-1525 MHz, 6875-6900 MHz and 7100-7125 MHz Bands.” Presentations are subject to “permit-but-disclose” ex parte rules. See 47 C.F.R. §§ 1.1206, 1.1200(a). Persons making ex parte presentations must file a copy of any written presentation or a memorandum summarizing any oral presentation within two business days after the presentation (unless a different deadline applicable to the Sunshine period applies). Participants in this proceeding should familiarize themselves with the Commission’s ex parte rules, including the general prohibition on presentations (written and oral) on matters listed on the Sunshine Agenda, which is typically released a week prior to the Commission’s meeting. See 47 CFR §§ 1.1200(a), 1.1203. Action by Chief, Office of Engineering and Technology. – FCC – 4