Radiocommunications (Unacceptable Levels of Interference — 26 GHz Band) Determination 2020 (Cth)

Radiocommunications (Unacceptable Levels of Interference — 26 GHz Band) Determination 2020

The Australian Communications and Media Authority makes the following determination under subsection 145(4) of the Radiocommunications Act 1992.

Dated: 23 November 2020

Fiona Chapman [signed] Member

Creina Chapman [signed] Member/General Manager

Australian Communications and Media Authority

Contents 1 Name 2 Commencement 3 Authority 4 Definitions 5 References to other instruments 6 Emission designator 7 Group of radiocommunications transmitters 8 Group of radiocommunications receivers 9 Unacceptable level of interference 10 Accuracy Schedule 1 Location of a transmitter Schedule 2 Device boundaries and device boundary criteria Schedule 3 Antenna height and average ground height

1 Name This is the Radiocommunications (Unacceptable Levels of Interference — 26 GHz Band) Determination 2020.

2 Commencement This instrument commences at the start of the day after the day it is registered on the Federal Register of Legislation.

Note: The Federal Register of Legislation may be accessed free of charge at www.legislation.gov.au.

3 Authority This instrument is made under subsection 145(4) of the Radiocommunications Act 1992.

4 Definitions (1) In this instrument: 26 GHz band means the part of the spectrum from 25.1 GHz to 27.5 GHz. Act means the Radiocommunications Act 1992. active antenna system or AAS means a base station antenna system where the amplitude and/or phase between antenna elements is continually adjusted, resulting in an antenna pattern that varies in response to short term changes in the radio environment. ASMG means the Australian Spectrum Map Grid 2012, published by the ACMA on its website at www.acma.gov.au. Note: The ASMG can be accessed for free on the ACMA's website: www.acma.gov.au. centre frequency, in relation to a radiocommunications transmitter, means the frequency midway between the lower and upper frequency limits of the transmitter's occupied bandwidth. DEM-3S means the dataset: (a) with the citation "Gallant, J., Wilson, N., Tickle, P.K., Dowling, T., Read A. 2009. 3 Second SRTM Derived Digital Elevation Model (DEM) Version 1.0. Record 1.0. Geoscience Australia, Canberra"; and (b) given the persistent identifier 69888; containing modelled terrain height information for Australia, published by Geoscience Australia. Note: Copies of DEM-3S can be obtained free of charge from the Geoscience Australia website: www.ga.gov.au. device boundary, in relation to a radiocommunications transmitter or a group of radiocommunications transmitters operated under a spectrum licence, means the device boundary established in accordance with Part 1 of Schedule 2 to this instrument. device boundary criterion, in relation to a radiocommunications transmitter or a group of radiocommunications transmitters operated under a spectrum licence, means the value of the mathematical expression calculated in accordance with Part 2 of Schedule 2 to this instrument. EIRP, in relation to a radiocommunications device, means the Equivalent Isotropically Radiated Power of the device. emission designator means the designation of a radiocommunications transmitter's emission, determined in accordance with section 6. fixed receiver means a radiocommunications receiver located at a fixed point on land or sea and not designed or intended for use while in motion. fixed transmitter means a radiocommunications transmitter located at a fixed point on land or sea and not designed or intended for use while in motion. GDA94 means the geodetic datum designated as the "Geocentric Datum of Australia (GDA)" gazetted in the Commonwealth of Australia Gazette No. GN 35 on 6 September 1995, as existing on that date. Note: More information on GDA94 can be obtained free of charge from the Geoscience Australia website: www.ga.gov.au. geographic area, for a spectrum licence, means the area within which the operation of a radiocommunications device is authorised under the licence. group of radiocommunications receivers has the meaning given by section 8. group of radiocommunications transmitters has the meaning given by section 7. HCIS identifier means an identifier used to describe a geographical area in the HCIS. hierarchical cell identification scheme or HCIS means the cell grouping hierarchy scheme used to describe areas in the ASMG. horizontally radiated power, for a radiocommunications device, means the sum of: (a) the maximum true mean power, in dBm per specified rectangular bandwidth, at the antenna connector that is located within the frequency band of the spectrum licence authorising the operation of the radiocommunications device; and (b) the antenna gain relative to an isotropic antenna in a specified direction in the horizontal plane containing the phase centre of the antenna used with the radiocommunications device, in dBi. ITU means the International Telecommunication Union. ITU-R means the International Telecommunication Union Radiocommunication Sector. location, in relation to a radiocommunications transmitter or group of radiocommunications transmitters, means the location of the transmitter or group of transmitters, as the case may be, calculated in accordance with Schedule 1 to this instrument. maximum true mean power means the true mean power measured in a specified, rectangular bandwidth that is located within a specified frequency band, such that the true mean power is the maximum of true mean powers produced. Note: The power within the specified rectangular bandwidth is normally established by taking measurements using either an adjacent channel power meter or a spectrum analyser. Estimation of the accuracy of the measuring equipment, measurement protocol and any adjustments made to measurements to take account of practical filter shape factors should be in accordance with good engineering practices. mean power means the average power measured during an interval of time that is at least 10 times the period of the lowest modulation frequency. occupied bandwidth, in relation to a radiocommunications transmitter, means the width of a frequency band having upper and lower limits that are necessary to contain 99% of the true mean power of the transmitter's emission at any time. Radio Regulations means the document: (a) titled 'Radio Regulations'; and (b) published by the ITU. Note 1: The Radio Regulations published by the ITU are not regulations made by the Governor‑General under the Act.