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Agenda item 1.8 – Fixed services in bands between 71–238 GHz

Agenda item 1.8 – Fixed services in bands between 71–238 GHz . Presenter: Paul Hettrick. WRC-12: Agenda Item 1.8.

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Agenda item 1.8 – Fixed services in bands between 71–238 GHz

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  1. Agenda item 1.8 – Fixed services in bands between 71–238 GHz Presenter: Paul Hettrick

  2. WRC-12: Agenda Item 1.8 to consider the progress of ITU‑R studies concerning the technical and regulatory issues relative to the fixed service in the bands between 71 GHz and 238 GHz, taking into account Resolutions 731 (WRC‑2000) and 732 (WRC‑2000)

  3. WRC-12: Agenda Item 1.8 Resolution 731 (WRC-2000)invites ITU-R studies on sharing and compatibility between the passive and active services in the 71-238 GHz range, whereas Resolution 732(WRC-2000) relates to sharing studies between co-primary active services in this range. Main focus at WRC-12 was on Res 731 and mandatory vs recommended emission masks for FS operating in bands adjacent to RAS and EESS bands. 86-92 GHz EESS band is between 81-86 GHz and 92-95 GHz FS bands 76-77.5 GHz RAS band adjacent to 81-86 GHz FS band Similar scenarios exist at higher frequencies and will need to be considered in the future.

  4. WRC-12: Agenda Item 1.8 Methods in the CPM Report put forward the options of suppressing/not suppressing Resolutions 731 and 732. APT supported no mandatory emission masks and the suppression of Resolutions 731 and 732. Australia’s position and that of all other regional groups differed from the APT in this respect by supporting retention of the Resolutions. Regional groups were divided on the issue of mandatory emission masks.

  5. WRC-12: Agenda Item 1.8 Outcome Resolutions 731 and 732 were retained in slightly modified forms. Compromise on emission masks with support for recommended masks rather than mandatory. Revision of Resolution 750 (WRC-07 - Compatibility between the Earth exploration-satellite service (passive) and relevant active services) to include: the 86-92 GHz EESS band, recommended emission masks for the 81-86 GHz and 92-94 GHz FS bands, and reference to the report ITU-R F.2239 for compatibility studies between relevant active and passive services operating in adjacent and nearby bands.

  6. WRC-12: Agenda Item 1.8 Outcome (cont.) Result partially in line with Australia’s position and differs significantly from the APT Common Proposal to WRC-12. Equipment manufacturers, suppliers and users should: Note the associated changes to the Radio Regulations, in particular, the recommended emission masks in Resolution 750. Take this outcome into consideration as a potential model for future consideration of compatibility between passive and active services in higher frequency bands in the 71 -238 GHz range.

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