Additional assurance measures for the coexistence of wireless broadband services and radio altimeters

Radiocommunications

We received 5 public and one confidential submission to the consultation. You can access the public submissions at the bottom of the page.

After considering submissions, we have decided to implement new voluntary assurance measures. These will come into effect on 1 April 2026, after the interim mitigations end on 31 March 2026. 

We have varied the following instruments:

• Radiocommunications Advisory Guidelines (Managing Interference from Spectrum Licensed Transmitters – 3.4 GHz Band) 2025
• Radiocommunications Licence Conditions (Area-Wide Licence) Determination 2020
• Radiocommunications Licence Conditions (Fixed Licence) Determination 2025.

We have updated the following radiocommunications assignment and licensing instructions (RALIs):

• RALI MS47: Licensing and coordination procedures for area-wide licences (AWL) in the 3400–4000 MHz band
• RALI MS50: Frequency coordination and licensing procedures for point-to-multipoint system licence. 

You can find more details about our decision, as well as a summary of the submissions and our responses, in the outcomes paper above.

The interim mitigations for coexistence between radio altimeters, operating in the 4200–4400 MHz band, and wireless broadband systems, operating in the 3700–4000 MHz band, will expire in March 2026. In addition, new radio altimeter operational requirements are being considered by the Civil Aviation Safety Authority (CASA).

We have considered the operating environment after the interim mitigations are lifted and are proposing new voluntary assurance measures that will apply to wireless broadband services after the interim mitigations end.