Proposed changes to channel arrangements for microwave fixed point-to-point links | ACMA

Proposed changes to channel arrangements for microwave fixed point-to-point links

Issue for comment 31/2014—18 July 2014


After considering issues raised in submissions a number of minor changes have been made and a revised version of RALI FX 3 is available here.

Changes made from the consultation version are:

  • Amending incorrect offsets and their related protection ratios
  • Introducing protection ratios for inter-band coordination
  • Including requirements about data rates supported under new channels
  • Introducing an assignment priority in some bands as a means to mitigate impact on existing systems
  • Corrections and clarification to 28 GHz path length correct factor curves
  • Editorial changes to 2.1 and 2.2 GHz to align with new RALI FX 21 (Television outside broadcasting).

The ACMA is consulting on the proposed changes to channel arrangements for microwave fixed point-to-point services to provide new spectrum options capable of supporting demand for increased data rates in backhaul networks.

The proposals require revising the existing Radiocommunications Assignment and Licensing Instruction FX3 Microwave Fixed Services Frequency Coordination (RALI FX3).

The proposed changes and rationale to the changes are outlined in:

  • the spectrum planning discussion paper, Proposed changes to channel arrangements for microwave fixed point-to-point links  (Word 2.5 MB)
  • Microwave fixed point-to-point services assignment statistics—1 January 2008 to 1 January 2012 (Word 1.3 MB)
  • Proposed amendments to RALI FX3 Appendix 1 RF Channel Arrangements and Assignment Instructions (Word 1.5 MB)
  • Proposed amendments to RALI FX3: Protection Ratios Assumptions and Methodology (Word 1.4 MB).

A copy of the existing RALI FX3 is available here

A PDF compilation of all documents is available here.

Submissions received

Interested parties had until 29 August 2014 to submit feedback on the proposed changes. The ACMA received six submissions from the following organisations:

The ACMA is currently considering the submissions that were received. 

Effective consultation

The ACMA is committed to ensuring the effectiveness of its stakeholder consultation processes, which are an important source of evidence for its regulatory development activities. To assist stakeholders in formulating submissions to its formal, written consultation processes, it has developed the following guide: Effective consultation: A guide to making a submission. This guide provides information about the ACMA’s formal, written, public consultation processes and practical guidance on how to make a submission.

Publication of submissions 

In general, the ACMA publishes all submissions it receives, including any personal information in the submissions (such as names and contact details of submitters). The ACMA prefers to receive submissions which are not claimed to be confidential. However, the ACMA accepts that a submitter may sometimes wish to provide information in confidence. In these circumstances, submitters are asked to identify the material (including any personal information) over which confidentiality is claimed and provide a written explanation for the claim. The ACMA will consider each confidentiality claim on a case-by-case basis. If the ACMA accepts a claim, it will not publish the confidential information unless authorised or required by law to do so. 

Release of submissions where authorised or required by law 

Any submissions provided to the ACMA may be released under the Freedom of Information Act 1982 (unless an exemption applies) or shared with other Australian Government agencies and certain other parties under Part 7A of the Australian Communications and Media Authority Act 2005. The ACMA may also be required to release submissions for other reasons including for the purpose of parliamentary processes or where otherwise required by law (for example, under a court subpoena). While the ACMA seeks to consult submitters of confidential information before that information is provided to another party, the ACMA cannot guarantee that confidential information will not be released through these or other legal means. 


The Privacy Act 1988 imposes obligations on the ACMA in relation to the collection, security, quality, access, use and disclosure of personal information. These obligations are detailed in the Australian Privacy Principles that apply to organisations and Australian Government agencies from 12 March 2014.

The ACMA may only collect personal information if it is reasonably necessary for, or directly related to, one or more of its functions or activities. 

The purposes for which personal information is being collected (such as the names and contact details of submitters) are to:

  • contribute to the transparency of the consultation process by clarifying, where appropriate, whose views are represented by a submission
  • enable the ACMA to contact submitters where follow-up is required or to notify them of related matters (except where submitters indicate they do not wish to be notified of such matters).

The ACMA will not use the personal information collected for any other purpose, unless the submitter has provided their consent or the ACMA is otherwise permitted to do so under the Privacy Act. 

Submissions in response to this paper are voluntary. As mentioned above, the ACMA generally publishes all submissions it receives, including any personal information in the submissions. If a submitter has made a confidentiality claim over personal information which the ACMA has accepted, the submission will be published without that information. The ACMA will not release the personal information unless authorised or required by law to do so. 

If a submitter wishes to make a submission anonymously or through use a pseudonym, they are asked to contact the ACMA to see whether it is practicable to do so in light of the subject matter of the consultation. If it is practicable, the ACMA will notify the submitter of any procedures that need to be followed and whether there are any other consequences of making a submission in that way.  

Further information on the Privacy Act and the ACMA’s privacy policy is available at The privacy policy contains details about how an individual may access personal information about them that is held by the ACMA, and seek the correction of such information. It also explains how an individual may complain about a breach of the Privacy Act and how the ACMA will deal with such a complaint.

Last updated: 15 March 2016