Document ID: chunk:federal_register_of_legislation:F2023L00248:reg:7
Version: federal_register_of_legislation:F2023L00248
Segment Type: reg
Provision Reference: reg 7
Character Range: 7268–10438

7  Background
 (1) In parts of the 700 MHz band, spectrum licensed radiocommunications transmitters operate in frequency bands directly adjacent to frequency bands for apparatus licensed radiocommunications receivers of different services. Apparatus licensed radiocommunications receivers may suffer interference from a spurious emission, and from blocking and intermodulation caused by a spectrum licensed radiocommunications transmitter.
 (2) This instrument has been made to provide guidance on the management of interference from radiocommunications transmitters operated under a 700 MHz band spectrum licence by providing for the protection of radiocommunications receivers that:
 (a) are operated under a receiver licence; or
 (b) receive, or are intended to receive, radiocommunications from radiocommunications transmitters operated under transmitter licences;
           in or adjacent to the 700 MHz band.
 (3) This instrument also provides guidance on the management of interference from radiocommunications transmitters operated under a 700 MHz band spectrum licence to radiocommunications receivers operating in the following circumstances:
 (a) digital television radiocommunications receivers operating below the 694 MHz frequency boundary (Part 3);
 (b) in the ARQZWA (Part 4);
 (c) in relation to wireless audio devices (Part 5);
 (d) trunked land mobile radiocommunications receivers operating in the frequency bands 806 MHz to 809 MHz and 851 MHz to 854 MHz (Part 6);
 (e) fixed link radiocommunications receivers operating in the frequency bands 804 MHz to 806 MHz and 845 MHz to 851 MHz (Part 7).
 (4) As radio waves propagate in different ways because of factors such as frequency, terrain, atmospheric conditions and topography, there are several ways to predict path loss. The 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 Radiocommunication Sector of the International Telecommunication Union. It advises on the most appropriate methods for particular applications, as well as the limits, required input information and output for each of these methods. The most recent version of propagation models defined by the Radiocommunication Sector of the International Telecommunication Union should be considered when modelling propagation in the 700 MHz band.
Note 1: ITU-R Recommendation P.1144 is available, free of charge, on the International Telecommunication Union's website at www.itu.int.
Note 2: The use of other published propagation methods applicable to the 700 MHz band may also be suitable.
 (5) The ACMA may take this instrument into account in determining whether a radiocommunications transmitter operated under a 700 MHz band spectrum licence is causing interference to an apparatus licensed or class licensed radiocommunications receiver operating in circumstances set out in this instrument.
 (6) This instrument does not prevent a person negotiating and implementing other protection requirements with other persons.

Part 3 Television broadcast services