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    Prepared by

    Ashok SelliahRF EME Consultant

    Melbourne: Suite 5, Clay Drive, Doncaster, Vic 3108 Phone: (03) 9848 9788 Fax: (03) 9844 4988

    ISO17025 Accreditation No. 15500

    www.radhaz.com.au

    RF EME ENVIRONMENTALSURVEY REPORT

    IN RELATION TO THEENVIRONMENTAL RF EME LEVELSAROUND THE GEELONG DISTRICT

    REPORT NO: 00028

    Oct 2006

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    RF EME Environmental Survey Report Geelong District Oct 2006

    RF EME ENVIRONMENTAL

    SURVEY REPORT

    IN RELATION TO THEENVIRONMENTAL RF EME LEVELSAROUND THE GEELONG DISTRICT

    Survey date 24 Oct 06

    Report No. 00028

    Measurement Officers Brendon WoodsAshok Selliah

    Authorised NATA Signatory

    Brendon WoodsPrincipal ConsultantRadhaz Consulting Pty Ltd

    This report may not be copied or reproduced whole or in part without the permission ofRADHAZ Consulting Propriety Limited.

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 2 of 12

    This document is issued in accordance with NATAs accreditation requirements.Accredited for compliance with ISO/IEC 17025.

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    RF EME Environmental Survey Report Geelong District Oct 2006

    Contents

    1. Introduction..............................................................................................................................4

    2. Federal Government Legal Requirements................................................................................4

    3 Measurements...........................................................................................................................4

    4 Measurement Results................................................................................................................6

    5 Summary...................................................................................................................................7

    APPENDIX A .................................................................................................................................8

    APPENDIX B ...............................................................................................................................11

    APPENDIX C ...............................................................................................................................12

    This report may not be copied or reproduced whole or in part without the permission ofRADHAZ Consulting Propriety Limited.

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 3 of 12

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    RF EME Environmental Survey Report Geelong District Oct 2006

    1. Introduction

    Mr Mike Wood of Telstra Corporation Pty Ltd (Telstra) requested RADHAZ Consulting PtyLtd, as independent consultants, undertake radiofrequency electromagnetic energy (RF EME)measurements of existing RF EME levels at specific locations in Geelong district of Victoria.

    The purpose of this report is to table the measured RF EME levels caused by the existing RFservices (including Radio, Television, Mobiles, etc.) at four locations in the locality of Geelong.

    The measured levels in the report are compared to the General Public RF EME limitsrecommended by ARPANSA in their RPS3 document.

    2. Federal Government Legal Requirements

    The Australian Communications and Media Authority (ACMA) has conditions on the operationof radiocommunications transmitters. These conditions regulate the exposure of the generalpublic to RF EME levels produced by all licensed RF transmitters.

    Licensed RF transmitter operators are required to ensure that the general public is not exposed toRF EME levels from their service in excess of prescribed limits. The prescribed limits are thereference field strength levels from the ARPANSA Radiation Protection Standard RPS3;Standard for Maximum Exposure Levels to Radio Frequency Fields 3 kHz to 300 GHz (2002).

    Further information can be gained from the ACMA and ARPANSA web sites:http://www.acma.gov.au/ACMAINTER:STANDARD:pc=PC_2798

    http://www.arpansa.gov.au/pubs/rps/rps3.pdf

    3 Measurements3.1 Survey Equipment

    Spectrum Analyzer 100kHz 3.3GHzMicronix MSA338 S/n M0000437Calibration Date October 2005ETS Log-Periodic Dipole Array AntennaEMCO Biconnical AntennaEMCO Loop Antenna5m Low Loss Feeder Tail

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    Tripod

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    RF EME Environmental Survey Report Geelong District Oct 2006

    3.2 Method

    3.2.1 The narrow band (spectral) Measurements were performed at a height of 1.5mabove ground level at the locations listed in Table 1 (Refer to Appendix A

    Diagram 1).

    3.2.2 Measurements were performed at a height of 1.5m above ground level at thelocations specified in Table 1. The band of frequencies between 500kHz and2.2GHz were measured, which includes mobile phone transmissions, TV, FMradio, AM radio, paging and other existing radio services operating in the area.Radio signals generated by GSM base stations have a constant power controlchannel and other radio (traffic) channels to provide for additional telephonecalls. The traffic channels vary in power and duration depending on the numberof users making telephone calls. The measurements in this report are of themobile control channels so as to achieve a stable and accurate reading. Typical

    power variations over a day due to other mobile traffic channels average at 30%.To account for these variations a factor of 4 has been applied.

    3.2.3 The survey locations were chosen to provide indicative levels of EME within theGeelong district, which included mobiles, broadcast (TV and Radio), Police andemergency services.

    3.2.4 Measurements of mobile services covered all operators - Telstra 3G, GSM900,GSM1800, CDMA800, WCDMA850, Optus - GSM900, GSM1800, Hutchison -3G, Vodafone - GSM900 and GSM1800 services.

    3.2.5 Some mobile phone base station signals (3G, CDMA) use spread spectrumtechnologies. The amplitude of these signals varies with the amount and nature ofthe mobile phone call. These signals were recorded, as they existed at the time ofthe measurement.

    3.2.6 Measurements were taken as per Australian Standard AS 2772.2 1988Radiofrequency radiation Part 2: Principles and Methods of Measurement 300kHz to 100 GHz.

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 5 of 12

    3.2.7 All Micronix spectrum analyser measurements were recorded in dBm, converted

    to equivalent power density and the percentage of the ARPANSA RPS3 Standard.

    Due to the changing exposure limit with frequency, cumulative exposure can onlybe expressed in terms of percentage of the exposure limits. A reported value of100 percent would indicate that the exposure level was at the allowable limit.

    The exposure limits are shown on Table 7 of RPS3, this can be viewed at:http://www.arpansa.gov.au/pubs/rps/rps3.pdf.

    http://www.arpansa.gov.au/pubs/rps/rps3.pdfhttp://www.arpansa.gov.au/pubs/rps/rps3.pdf
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    RF EME Environmental Survey Report Geelong District Oct 2006

    4 Measurement Results

    The levels shown in Table 1 should be seen as indicative only and represent the fraction of

    the RPS3 general public limit for that specific location under the operating conditions for thatparticular time. RF EME levels vary significantly over small distances, while every effort ismade to capture the highest level at a given location; it is possible that localised high levelsmay be missed.

    The Radio signals generated by GSM and CDMA signals will fluctuate due to changingtraffic levels. The traffic channels vary in power and duration depending on the number ofusers making telephone calls. Trials conducted by ARPANSA found that the average powercan vary by a factor of +30% over a day due to change in mobile traffic conditions.

    Generally, the reported measured levels will over estimate the average RF EME level in a

    given area.

    Broadcast services such as TV and radio transmit at a constant power and vary little over agiven area depending on the topography.

    UHF and VHF services recorded in the area were a combination of press-to-talk and constanttransmit.

    Table 1 below tabulates the cumulative RF EME measured at each location. Charts 1 4 inAppendix A shows the contribution each band of frequencies (services) makes to produce

    the cumulative level at each location.

    Chart 5 shows a spectral trace of all radio signals over the band 15 MHz to 1000 MHz. Thevertical axis of the chart indicates the amplitude of the measured signal; where the higher thepeak the greater the amplitude E.g. 40 dBm is 100 times greater than 60 dBm. Thehorizontal axis indicates the frequency in MHz. This type of chart provides the datanecessary for producing the pie chart. In reality, many more radio signals can be present butwere not being transmitted at the time of the survey and consequently not recorded. Due totheir constancy and higher power, public broadcast signals (TV and radio) usually contributethe greater amount of RF EME.

    Measured levels of 20dB or less than the maximum peak of a particular service are notincluded because they represent less than 1% of the total power density.

    The measurements have an uncertainty of3dB.

    Conversion to field strength and the fraction of the RPS3 general public limit is achieved bya formula that takes into account the gain of the receiving antenna, cable loss and spectrumanalyser/receiver calibration.

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 6 of 12

    RadHaz Consulting permanently stores all measurement equipment calibration details, sitemaps and recorded measurement scans.

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    RF EME Environmental Survey Report Geelong District Oct 2006

    Table 1: Locations and measured cumulative RF EME levels

    Measurement Locations

    Existing environmentallevels as a % of ARPANSAGeneral Public Exposure

    Limit

    Times below GeneralPublic Exposure

    Limit

    Full Spectrum Measurements

    1. Richmond oval Carpark Geelong South 0.000288 347,222

    2. Leopold Cemetery carpark (opposite Catholicchurch.)

    0.002430 41,152

    3.Grovedale Area opposite 8 Polley Crt 0.000598 167,224

    4. Sports Ground Shannon Ave Geelong West 0.009593 10,424

    UHF Services Only5. Geelong town ship - opposite Ambulance andCFA buildings - McKillop St

    0.419131 238

    6. Fenwick St Opposite School 0.002556 39,123

    Note:1) Percentages based on the total measured power density from all mobile and

    radio services with respect to the ARPANSA general public exposure limits.2) Refer to Appendix A for layout of measurement locations.3) A value of 100% indicates the General Public Limit.4) Measured levels of 20dB or less than the maximum peak of a particular

    service is not included because they represent less than 1% of the total powerdensity.

    5) Values rounded off to 6 decimal places6) Locations 1-4 include all services operating between 400KHz 2.2GHz.7) Locations 5 & 6 include UHF services only 400MHz band

    5 Summary

    5.1 The maximum cumulative RF EME level measured within the Geelong district at the four

    locations from all existing radio and mobile telephone services operating in the area was0.009593 (10,424 times less) of the allowable ARPANSA General Public ExposureLimit.

    5.2 According to ARPANSA and the World Health Organisation levels as low as these arenot known to cause adverse health effects.

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 7 of 12

    5.3 Spot measurements of UHF and VHF services were conducted within the Geelong townsite around existing transmit facilities (refer Appendix C). The maximum RF EMErecorded for UHF services only was 0.419131% (238 times less) measured at adistance of approximately 20m from the Ambulance Depot along McKillop St, Geelong.

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    RF EME Environmental Survey Report Geelong District Oct 2006

    APPENDIX A

    Measured levels by service expressed as a percentage of RPS3 General Public limits

    Chart 1 - Richmond Oval, Geelong : Ambient RF EME Levels

    9.659%Total Cum ulat ive RF EME = 0.000288% ofRPS3 of General Public Limi t

    AMFMUHF & VHF TV

    30.218%UHF & HF ServicesVMobile

    57.497%

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 8 of 12

    2.376%0.250%

    Chart 2 - Leopold Cemetery Carpark, Geelong: Ambient RF EME Levels1.8752%

    0. %270

    97.418%

    0 7%.00 0.429%

    AMFMUHF & VHF TVUHF & VHF ServicesMobile

    Total Cumulative RF EME = 0.00243% ofRPS3 General Public Limi t

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    RF EME Environmental Survey Report Geelong District Oct 2006

    Chart 3 - Grovedale Area, Geelong : Ambient RF EME Levels

    Total Cumulative RF EME = 0.00056% ofRPS3 of General Public Limi t

    25.950%

    AMFM

    44.403% UHF & VHF TVUHF & HF ServicesV

    Mobile1.074%0.797%

    27.775%

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 9 of 12

    Chart 4 - Shannon Avenue, Geelong West: Ambient RF EME Levels

    30.908%

    66.594%

    0.036%

    0.068%

    2.393%

    AMFMUHF & VHF TV

    UHF & VHF Services

    Mobile

    Total Cumulative RF EME = 0.0096% ofRPS3 of General Public Li mit

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    RF EME Environmental Survey Report Geelong District Oct 2006

    Chart 5 Location 1 Richmond Oval Car Park Full Spectrum

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 10 of 12

    Note:This is aspectral trace of all radio signals over the band 400KHz to 2.2GHz. This plot is a

    typical representation of radio communication systems present in the community.

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    RF EME Environmental Survey Report Geelong District Oct 2006

    APPENDIX B

    Location Map Survey locations

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    RF EME Environmental Survey Report Geelong District Oct 2006

    APPENDIX C

    UHF & VHF Services currently operating in the Geelong Area

    Rural Ambulance: Australian FederalPolice:

    Barwon WaterAuthority:

    76.49MHz460.578MHz412.475MHz451.075MHz403.025MHz

    489.925MHz484.725MHz488.438MHz483.175MHz

    450.775MHz460.275MHz475.050MHz

    Victoria Police Victorian StateEmergencyServices:

    CFA:

    469.000MHz459.500MHz459.575MHz469.275MHz459.775MHz

    459.100MHz468.600MHz468.625MHz468.650MHz2.57650MHz3.73050MHz3.7335MHz3.7365MHz3.7445MHz4.5685MHz4.5745MHz459.15MHz

    450.60000MHz460.10000MHz160.98750MHz161.12500MHz161.01250MHz161.21250MHz148.21250MHz

    Note: All services shown at their operating frequencies as given in the ACMA website.

    ISO17025 Accreditation No. 15500 RADHAZ Consulting Pty Ltd Page 12 of 12