Document ID: chunk:federal_register_of_legislation:F2020L01452:reg:7
Version: federal_register_of_legislation:F2020L01452
Segment Type: reg
Provision Reference: reg 7
Character Range: 9308–11550

7  Purpose
 (1) This instrument has been made to guide the management of these types of interference to licensed radiocommunications receivers operating in the following circumstances:
           (a) earth receive stations operating in the frequency range 25.5 GHz–27 GHz (Part 3 of this instrument);
           (b) space receive stations operating in the 26 GHz band (Part 4 of this instrument);
           (c) services authorised by an area-wide licence operating in and adjacent to the 26 GHz band (Part 5 of this instrument);
           (d) class licensed services in the 26 GHz band (Part 6 of this instrument); and
           (e) fixed services operating in the frequency range 27.5 GHz–29.5 GHz (Part 7 of this instrument).
 (2) As radio waves propagate in different ways because of factors such as frequency, terrain, atmospheric conditions and topography, there are a number of ways to predict path loss. ITU-R Recommendation P.1144 "Guide to the application of the propagation methods of Radiocommunications Study Group 3" provides a guide on the application of various propagation methods developed internationally by the ITU-R. It advises users on the most appropriate methods for particular applications as well as the limits, required input information, and output for each of these methods. It is recommended that the most recent version of propagation models defined by the ITU-R should be considered when modelling propagation in the 26 GHz band.
Note 1: The ITU-R Recommendation P.1144 "Guide to the application of the propagation methods of Radiocommunications Study Group 3" is available, free of charge, on the ITU's website: www.itu.int.
Note 2: The use of other published propagation methods applicable to the 26 GHz band may also be suitable.
 (3) The ACMA will take this instrument into account in determining whether interference has occurred from a radiocommunications transmitter operating under a 26 GHz band spectrum licence to a radiocommunications transmitter operating under another licence, in the absence of separate criteria agreed between affected licensees.
 (4) This instrument does not prevent a licensee negotiating other protection arrangements with another licensee.

Part 3 Earth receive stations