5.1 Request for a decision by the Radio Regulations Board for the cancellation of the frequency assignments in the bands 10 950-11 195 MHz and 11 198.03 MHz to the INTELSAT8 328.5E and INTELSAT9 328.5E satellite networks under No. 13.6 of the Radio Regulations The Board considered in detail Documents RRB18-2/5 and RRB18-2/13 and concluded that the Bureau had applied No. 13.6 of the Radio Regulations correctly. The Board noted that the Administration of the United States provided no information to demonstrate that the frequency assignments continued to be in use in compliance with the provisions of the Radio Regulations for the three year period prior to 26 September 2017. However, the Board further noted that the frequency assignments are among those referenced as “Common Heritage” in the Agreement Relating to the International Telecommunications Satellite Organisation. Based on the information provided, the Board considered that the Administration of the United States did not comply with the Radio Regulations and decided to cancel all assignments to the INTELSAT8 328.5E and INTELSAT9 328.5E satellite networks in the frequency bands 10 95011 195 MHz and 11 197.9811 198.03 MHz, and instructed the Bureau to postpone this cancellation until the last day of WRC-19. Executive Secretary will communicate this decision to the administration concerned. Bureau to cancel all assignments to the INTELSAT8 328.5E and INTELSAT9 328.5E satellite networks in the frequency bands 10 95011 195 MHz and 11 198.03 MHz and to postpone this cancellation until the last day of WRC-19. by the Administration of the United States regarding the frequency assignments in the bands 10 195 MHz and 11 198.03 MHz to the INTELSAT8 328.5E and INTELSAT9 328.5E satellite networks at 31.5°W 5.2 Request for a decision by the Radio Regulations Board for the cancellation of the frequency assignments to the satellite network under No. 13.6 of the Radio Regulations The Board considered Document RRB18-2/6 in detail. Based information provided in Document RRB18-2/9 and Document for information, the Board concluded that the assignments to the CTDRS-1-77E satellite network were in compliance with the Radio Regulations, and that the China has provided information to confirm this status. Board decided to instruct the Bureau to maintain the frequency to the CTDRS-1-77E satellite network in the MIFR.
administrations. Attachment 2 contains the calculation methodology used for deriving the additional margin. Reasons: WRC-03 amended item C.8.e.1 of Annex 2 of Appendix 4 and defined it as the greater of either the carrier-to-noise ratio, required to meet the performance of the link under clear-sky conditions or the ratio, required to meet the short-time objectives of the link inclusive of the necessary margins. In the French text a comma exists before “inclusive of necessary margins”. Therefore, the submitted value of the C/N objective should include all necessary margins. to WRC-03, no indication of an inclusion of any additional margin into the C/N objective existed in the Radio Regulations. Therefore, the calculation methodology in Attachment 2 is used to define an additional margin to be added to the noise of the C/N objective to identify the C/I required to calculate the probability of causing harmful interference to frequency assignments of the networks received before 1 January 2005. Effective date of application of the Rule: immediately approval. NOC 3.1 Interfering cases MOD 3.2 Margin M, C/I, C/N algorithms The algorithms described in Attachment 1 shall be used to evaluate compliance with the mutually accepted interference criteria or with the single entry limits established in Table 2. Table 2 provided below takes into account the information submitted to the Bureau by administrations in accordance with Appendix 4 and the carrier type definition in § 3.1 above and is a simplification of Table 2 of Recommendation ITUR S.7412. 2 Single entry interference (SEI) protection criteria Interfering carrier type Desired carrier type Analogue (TV-FM) or other Digital Analogue (other than TV-FM) Analogue (TVFM) C/Ntot + 14 (dB) Digital If DeNeBd InEqBd then C/Ntot + 9.4 + 3.5 log (δ) – 6 log (i/10) (dB) (i.e. C/Ntot + 5.5 + 3.5 log (DeNeBd (MHz))) Otherwise if DeNeBd > InEqBd then C/Ntot + 12.2 (dB) C/Ntot + 12.2 (dB)