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CEPT accepts an IARU study for the regulatory work on 23cm band amateur / RNSS coexistence.

As usual the IARU participated in the most recent CEPT SE40 meeting developing the ECC Report on 23cm band amateur and RNSS GALILEO coexistence. The meeting reviewed and accepted a major statistical study carried out by the IARU for inclusion in the developing draft work item deliverable. No other contributing parties have provided such a study and the results clearly underpin the IARU view that potential interference to a population of RNSS GALILEO users is unlikely on any large scale.

A SRLC summary report is available here and includes links to the relevant documents.

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Lowest and highest bands under the spotlight in CEPT SE24

CEPT Short Range Device project team SE24 meeting #108 took place 9 — 11 January 2023. The IARU participated in the work of the group on several work items associated with Wireless Power Transfer (WPT) and Ultra-Wide Band (UWB) automotive radars. 

The impact and standardisation of WPT technologies is being carefully assessed across the lowest HF bands and the impact of the UWB technologies is relevant in the amateur service allocations in the mm-wave bands at 76 GHz, 122 GHz and 134 GHz. 

The IARU R1 continues to fully engage in the ongoing studies associated with WPT to ensure minimal impact to our lowest HF bands. The IARU made a contribution to ensure the amateur services voice was heard in the discussion to finalise draft ECC Report 351 on spectrum sharing studies on mm-wave UWB radar systems. Draft ECC reports 350 and 351 were finalised. A SRLC report can be found here.

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ITU‑R Working Party 5A is making progress on the 23cm amateur band and RNSS (radio navigation satellite service) coexistence.

Over the period 14th to 25th November 2022, the preparatory work for WRC-23 agenda item 9.1b continued in ITU‑R Working Party 5A (WP5A). Two deliverables are under discussion:

1) Draft ITU‑R Report M.[AMATEUR_CHARACTERISTICS] – this reports on the specific 23cm band amateur and amateur satellite service technical parameters and operational characteristics used in the studies now published in ITU‑R Report M.2513 – 0.

2) Draft ITU.R Recommendation M.[AS_GUIDANCE] – this will recommend guidance that national administrations can take to facilitate the protection of the radio navigation satellite service from harmful interference from amateur radio stations.

Since the previous WP5A meeting the IARU global WRC23 9.1b team led by G4SJH has been consulting with the amateur community resulting in a contribution to the draft guidance recommendation. As usual, the IARU participated in the meeting to support the contribution and take part in the ongoing discussion and negotiations. Contributions were also provided by a number of national administrations and a summary report of the meeting can be downloaded.

In general the development of the recommendation is moving in a suitable direction and many of the IARU proposals remain in the draft document that will go forward to the next meeting for further work.

Meanwhile in CEPT the work in project team SE40 continues with their development of an ECC Report on the same coexistence problem and also met during November (3 – 4th).

The work on this topic will continue throughout next year both in ITU‑R and in the regional telecommunications organisations and the IARU is committed to ensure the studies are properly interpreted and that due account is taken of the realities of amateur operations in this band.

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