Mobile Telephone Base-station Audit for Didsbury Road Primary School
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English

Mobile Telephone Base-station Audit for Didsbury Road Primary School

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Description

Mobile Telephone Base-station Radio Emission AuditAUDIT SITE : Didsbury Road Primary SchoolDidsbury RoadStockportGreater ManchesterSK4 3HBThe Radiocommunications Agency (RA) is responsible for the management of the civilradio spectrum in the UK. The Government has asked the RA to implement a nationalmeasurement programme to ensure that emissions from cellular base stations do notexceed recommended guidelines.RA engineers measure the power density of transmissions in the various radio bands tobe surveyed. The results, derived from electric field voltage measurements, arereferenced to and presented alongside the relevant International Commission on Non-Ionizing Radiation Protection (ICNIRP) recommended non-occupational maximumexposure levels. On the left hand side of the results page(s) is a graphicalrepresentation of the radio spectrum surveyed at each location on the site. At the top ofeach graph a red line indicates the ICNIRP recommended exposure level for thatfrequency band. To the right hand side of each graph is a table showing the ten highestlevel emissions recorded within a band. In addition to this report, results taken fromeach audit site will be posted on the RA website at www.radio.gov.uk where furtherinformation on the audit can be found.Further explanation of the results and their context within ICNIRP guidelines can beprovided by the RA engineers at the time of the audit or by contacting the RA on 0207211 0211 or by e-mail at ...

Subjects

Informations

Published by
Reads 16
Language English
Mobile Telephone Base-station
Radio Emission Audit
AUDIT SITE :
Didsbury Road Primary School
Didsbury Road
Stockport
Greater Manchester
SK4 3HB
The Radiocommunications Agency (RA) is responsible for the management of the civil
radio spectrum in the UK.
The Government has asked the RA to implement a national
measurement programme to ensure that emissions from cellular base stations do not
exceed recommended guidelines.
RA engineers measure the power density of transmissions in the various radio bands to
be surveyed. The results, derived from electric field voltage measurements, are
referenced to and presented alongside the relevant International Commission on Non-
Ionizing Radiation Protection (ICNIRP) recommended non-occupational maximum
exposure levels.
On the left hand side of the results page(s) is a graphical
representation of the radio spectrum surveyed at each location on the site.
At the top of
each graph a red line indicates the ICNIRP recommended exposure level for that
frequency band. To the right hand side of each graph is a table showing the ten highest
level emissions recorded within a band. In addition to this report, results taken from
each audit site will be posted on the RA website at
www.radio.gov.uk
where further
information on the audit can be found.
Further explanation of the results and their context within ICNIRP guidelines can be
provided by the RA engineers at the time of the audit or by contacting the RA on 020
7211 0211 or by e-mail at rfaudit@ra.gsi.gov.uk.
The DfEE have issued advice and information about base stations to local education
authorities and schools in the DfEE's 'Spectrum' publication.
Further information and
contact points can also be found on the DfEE website at
http://www.dfee.gov.uk/a-
z/mobilephones.html
.
Page 1 of 9
17 May 2001
Printed:
MEA-V1.0
Report Summary
The Radiocommunications Agency performed this survey of the RF emission
environment prevailing in the vicinity of Didsbury Road Primary School on 17 May
2001.
As the radio spectrum is continually changing, these measurements can only
provide information on the RF conditions for the specific location(s) at the time of
the survey.
It can be seen from this report that the highest value Total Band Exposure Quotient
was 8.828E-05 measured at location "Dining hall". This value is approximately 1/11327
of the ICNIRP maximum guideline reference level for public exposure.
Issued on behalf of the Radiocommunications Agency
John Livesey
Radiocommunications Specialist
Page 2 of 9
17 May 2001
Printed:
MEA-V1.0
NGR:
SJ 8670 9060
Manufacturer:
Rohde & Schwarz
Serial Number:
836287/018
Model:
HE200.4050.3609.02
Location:
Adjacent to mast
Start Time:
17 May 2001
Engineer:
John Livesey
Site:
Didsbury Road Primary School
11:15:08
Serial Number:
838.681/021,V02.31-4052.4654.
Manufacturer:
ROHDE&SCHWARZ
Receiver:
Model:
EB200
Antenna:
ETACS 917-933 MHz
1E-13
1E-11
1E-09
1E-07
1E-05
0.001
0.1
10
917
920
923
927
930
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
926.200
1.000E-09
4.63
2.160E-10
926.175
7.247E-10
4.63
1.565E-10
927.625
4.484E-10
4.64
9.667E-11
927.575
4.381E-10
4.64
9.446E-11
926.225
4.268E-10
4.63
9.216E-11
927.650
4.185E-10
4.64
9.022E-11
926.150
3.982E-10
4.63
8.600E-11
927.600
3.644E-10
4.64
7.857E-11
927.550
3.561E-10
4.64
7.678E-11
926.000
3.236E-10
4.63
6.989E-11
Band Exposure Quotient :
2.493E-09
GSM 935-960 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
935
940
945
950
955
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
956.400
1.231E-07
4.78
2.575E-08
947.000
1.151E-07
4.74
2.430E-08
958.800
1.104E-07
4.79
2.302E-08
941.800
8.626E-08
4.71
1.832E-08
946.600
8.523E-08
4.73
1.801E-08
944.600
8.484E-08
4.72
1.796E-08
953.600
8.464E-08
4.77
1.775E-08
952.800
8.257E-08
4.76
1.733E-08
942.800
7.027E-08
4.71
1.491E-08
950.800
4.119E-08
4.75
8.664E-09
Band Exposure Quotient :
4.137E-07
GSM 1808-1880 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
1808
1823
1837
1851
1866
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
1,867.800
2.113E-04
9.34
2.262E-05
1,853.600
1.301E-05
9.27
1.404E-06
1,860.400
4.259E-06
9.30
4.579E-07
1,861.200
4.073E-06
9.31
4.377E-07
1,861.800
2.954E-06
9.31
3.173E-07
1,868.000
2.917E-06
9.34
3.124E-07
1,867.600
2.784E-06
9.34
2.982E-07
1,862.600
2.636E-06
9.31
2.830E-07
1,869.800
2.379E-06
9.35
2.544E-07
1,866.600
2.108E-06
9.33
2.259E-07
Band Exposure Quotient :
2.881E-05
Total Band Exposure Quotient :
2.923E-05
Number of Frequencies Used in Quotient :
1128
Page 3 of 9
17 May 2001
Printed:
MEA-V1.0
NGR:
SJ86709060
Manufacturer:
Rohde & Schwarz
Serial Number:
836287/018
Model:
HE200.4050.3609.02
Location:
Playing field adjacent to school building
Start Time:
17 May 2001
Engineer:
John Livesey
Site:
Didsbury Road Primary School
11:30:21
Serial Number:
838.681/021,V02.31-4052.4654.
Manufacturer:
ROHDE&SCHWARZ
Receiver:
Model:
EB200
Antenna:
ETACS 917-933 MHz
1E-13
1E-11
1E-09
1E-07
1E-05
0.001
0.1
10
917
920
923
927
930
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
926.250
7.084E-11
4.63
1.530E-11
926.225
6.313E-11
4.63
1.363E-11
926.175
5.626E-11
4.63
1.215E-11
926.200
5.014E-11
4.63
1.083E-11
927.625
3.644E-11
4.64
7.857E-12
926.275
3.470E-11
4.63
7.491E-12
926.150
3.469E-11
4.63
7.490E-12
926.125
3.389E-11
4.63
7.320E-12
927.600
3.031E-11
4.64
6.535E-12
925.250
2.749E-11
4.63
5.943E-12
Band Exposure Quotient :
2.489E-10
GSM 935-960 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
935
940
945
950
955
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
958.800
8.566E-07
4.79
1.787E-07
942.200
4.855E-07
4.71
1.031E-07
954.800
3.458E-07
4.77
7.243E-08
957.400
1.956E-07
4.79
4.086E-08
936.800
1.823E-07
4.68
3.892E-08
952.800
1.806E-07
4.76
3.792E-08
946.200
1.699E-07
4.73
3.591E-08
942.800
1.339E-07
4.71
2.841E-08
944.600
9.519E-08
4.72
2.015E-08
950.800
8.606E-08
4.75
1.810E-08
Band Exposure Quotient :
8.103E-07
GSM 1808-1880 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
1808
1823
1837
1851
1866
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
1,867.800
3.426E-04
9.34
3.669E-05
1,855.800
5.443E-05
9.28
5.866E-06
1,853.600
2.367E-05
9.27
2.554E-06
1,871.800
1.091E-05
9.36
1.166E-06
1,868.000
5.070E-06
9.34
5.428E-07
1,856.000
3.767E-06
9.28
4.059E-07
1,867.600
3.505E-06
9.34
3.754E-07
1,869.800
2.860E-06
9.35
3.059E-07
1,862.600
1.552E-06
9.31
1.667E-07
1,861.000
1.513E-06
9.30
1.626E-07
Band Exposure Quotient :
5.037E-05
Total Band Exposure Quotient :
5.118E-05
Number of Frequencies Used in Quotient :
1128
Page 4 of 9
17 May 2001
Printed:
MEA-V1.0
NGR:
SJ86709060
Manufacturer:
Rohde & Schwarz
Serial Number:
836287/018
Model:
HE200.4050.3609.02
Location:
Dining hall
Start Time:
17 May 2001
Engineer:
John Livesey
Site:
Didsbury Road Primary School
11:46:31
Serial Number:
838.681/021,V02.31-4052.4654.
Manufacturer:
ROHDE&SCHWARZ
Receiver:
Model:
EB200
Antenna:
ETACS 917-933 MHz
1E-13
1E-11
1E-09
1E-07
1E-05
0.001
0.1
10
917
920
923
927
930
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
927.600
3.561E-11
4.64
7.678E-12
926.200
3.164E-11
4.63
6.832E-12
927.625
2.895E-11
4.64
6.241E-12
926.025
2.754E-11
4.63
5.949E-12
928.625
2.358E-11
4.64
5.079E-12
926.250
2.090E-11
4.63
4.514E-12
927.550
2.049E-11
4.64
4.418E-12
928.600
1.873E-11
4.64
4.035E-12
927.650
1.827E-11
4.64
3.938E-12
925.975
1.738E-11
4.63
3.753E-12
Band Exposure Quotient :
1.495E-10
GSM 935-960 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
935
940
945
950
955
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
958.800
6.963E-08
4.79
1.452E-08
941.600
5.316E-08
4.71
1.129E-08
942.200
3.599E-08
4.71
7.640E-09
936.800
8.929E-09
4.68
1.906E-09
948.800
6.206E-09
4.74
1.308E-09
937.800
6.051E-09
4.69
1.290E-09
952.800
5.582E-09
4.76
1.172E-09
956.400
4.791E-09
4.78
1.002E-09
947.600
4.588E-09
4.74
9.683E-10
954.800
3.970E-09
4.77
8.316E-10
Band Exposure Quotient :
5.503E-08
GSM 1808-1880 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
1808
1823
1837
1851
1866
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
1,867.800
5.068E-04
9.34
5.427E-05
1,862.400
1.999E-04
9.31
2.147E-05
1,861.200
8.126E-05
9.31
8.732E-06
1,861.400
8.512E-06
9.31
9.146E-07
1,868.000
6.683E-06
9.34
7.156E-07
1,867.600
6.527E-06
9.34
6.990E-07
1,869.800
5.449E-06
9.35
5.829E-07
1,871.800
2.870E-06
9.36
3.066E-07
1,853.600
2.209E-06
9.27
2.383E-07
1,860.400
9.757E-07
9.30
1.049E-07
Band Exposure Quotient :
8.822E-05
Total Band Exposure Quotient :
8.828E-05
Number of Frequencies Used in Quotient :
1128
Page 5 of 9
17 May 2001
Printed:
MEA-V1.0
NGR:
SJ86799060
Manufacturer:
Rohde & Schwarz
Serial Number:
836287/018
Model:
HE200.4050.3609.02
Location:
Centre of junior playground
Start Time:
17 May 2001
Engineer:
John Livesey
Site:
Didsbury Road Primary School
12:01:00
Serial Number:
838.681/021,V02.31-4052.4654.
Manufacturer:
ROHDE&SCHWARZ
Receiver:
Model:
EB200
Antenna:
ETACS 917-933 MHz
1E-13
1E-11
1E-09
1E-07
1E-05
0.001
0.1
10
917
920
923
927
930
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
926.000
7.586E-11
4.63
1.638E-11
927.625
7.441E-11
4.64
1.604E-11
925.975
6.309E-11
4.63
1.363E-11
927.600
5.910E-11
4.64
1.274E-11
926.025
5.755E-11
4.63
1.243E-11
925.950
5.247E-11
4.63
1.133E-11
926.050
3.982E-11
4.63
8.599E-12
927.575
3.644E-11
4.64
7.857E-12
927.650
2.962E-11
4.64
6.387E-12
927.550
2.962E-11
4.64
6.386E-12
Band Exposure Quotient :
2.948E-10
GSM 935-960 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
935
940
945
950
955
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
958.800
1.489E-07
4.79
3.105E-08
942.200
7.520E-08
4.71
1.596E-08
954.800
5.739E-08
4.77
1.202E-08
952.800
1.435E-08
4.76
3.012E-09
950.800
1.303E-08
4.75
2.740E-09
937.800
1.235E-08
4.69
2.635E-09
951.600
9.674E-09
4.76
2.033E-09
957.400
9.363E-09
4.79
1.956E-09
946.200
7.589E-09
4.73
1.604E-09
957.000
6.934E-09
4.79
1.449E-09
Band Exposure Quotient :
1.155E-07
GSM 1808-1880 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
1808
1823
1837
1851
1866
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
1,862.400
3.809E-05
9.31
4.090E-06
1,855.800
3.514E-05
9.28
3.787E-06
1,867.800
1.640E-05
9.34
1.756E-06
1,861.200
1.445E-05
9.31
1.553E-06
1,860.400
6.907E-07
9.30
7.425E-08
1,862.600
6.323E-07
9.31
6.790E-08
1,861.400
5.249E-07
9.31
5.639E-08
1,853.600
4.510E-07
9.27
4.866E-08
1,855.600
3.204E-07
9.28
3.453E-08
1,856.000
2.377E-07
9.28
2.561E-08
Band Exposure Quotient :
1.167E-05
Total Band Exposure Quotient :
1.179E-05
Number of Frequencies Used in Quotient :
1128
Page 6 of 9
17 May 2001
Printed:
MEA-V1.0
NGR:
SJ 8670 9060
Manufacturer:
Rohde & Schwarz
Serial Number:
836287/018
Model:
HE200.4050.3609.02
Location:
Year 6 classroom Mrs. C. Fort
Start Time:
17 May 2001
Engineer:
John Livesey
Site:
Didsbury Road Primary School
13:15:04
Serial Number:
838.681/021,V02.31-4052.4654.
Manufacturer:
ROHDE&SCHWARZ
Receiver:
Model:
EB200
Antenna:
ETACS 917-933 MHz
1E-13
1E-11
1E-09
1E-07
1E-05
0.001
0.1
10
917
920
923
927
930
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
927.625
6.786E-11
4.64
1.463E-11
927.575
5.267E-11
4.64
1.136E-11
926.225
3.983E-11
4.63
8.601E-12
926.200
3.632E-11
4.63
7.844E-12
926.150
3.312E-11
4.63
7.153E-12
928.625
3.256E-11
4.64
7.012E-12
926.175
3.237E-11
4.63
6.991E-12
927.550
3.101E-11
4.64
6.687E-12
925.975
2.884E-11
4.63
6.229E-12
927.650
2.580E-11
4.64
5.563E-12
Band Exposure Quotient :
2.310E-10
GSM 935-960 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
935
940
945
950
955
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
958.800
4.929E-07
4.79
1.028E-07
954.800
4.773E-07
4.77
9.998E-08
942.800
4.333E-07
4.71
9.192E-08
946.200
3.717E-07
4.73
7.857E-08
957.400
2.520E-07
4.79
5.264E-08
950.800
1.757E-07
4.75
3.696E-08
952.800
1.647E-07
4.76
3.458E-08
936.800
1.415E-07
4.68
3.021E-08
936.400
1.001E-07
4.68
2.138E-08
942.200
6.255E-08
4.71
1.328E-08
Band Exposure Quotient :
6.740E-07
GSM 1808-1880 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
1808
1823
1837
1851
1866
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
1,867.800
2.660E-04
9.34
2.848E-05
1,862.400
1.351E-04
9.31
1.451E-05
1,861.200
7.243E-05
9.31
7.783E-06
1,855.800
6.544E-05
9.28
7.053E-06
1,871.800
6.136E-06
9.36
6.556E-07
1,853.600
3.928E-06
9.27
4.239E-07
1,868.000
3.673E-06
9.34
3.932E-07
1,867.600
3.347E-06
9.34
3.585E-07
1,862.200
2.458E-06
9.31
2.640E-07
1,834.000
1.583E-06
9.17
1.726E-07
Band Exposure Quotient :
6.190E-05
Total Band Exposure Quotient :
6.257E-05
Number of Frequencies Used in Quotient :
1128
Page 7 of 9
17 May 2001
Printed:
MEA-V1.0
NGR:
SJ 8670 9060
Manufacturer:
Rohde & Schwarz
Serial Number:
836287/018
Model:
HE200.4050.3609.02
Location:
Nursery
Start Time:
17 May 2001
Engineer:
John Livesey
Site:
Didsbury Road Primary School
13:29:59
Serial Number:
838.681/021,V02.31-4052.4654.
Manufacturer:
ROHDE&SCHWARZ
Receiver:
Model:
EB200
Antenna:
ETACS 917-933 MHz
1E-13
1E-11
1E-09
1E-07
1E-05
0.001
0.1
10
917
920
923
927
930
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
927.175
7.433E-11
4.64
1.603E-11
927.600
7.271E-11
4.64
1.568E-11
927.200
4.278E-11
4.64
9.227E-12
927.625
3.905E-11
4.64
8.419E-12
927.250
3.099E-11
4.64
6.685E-12
927.650
2.895E-11
4.64
6.242E-12
927.575
2.829E-11
4.64
6.099E-12
927.675
2.640E-11
4.64
5.693E-12
927.225
2.578E-11
4.64
5.560E-12
927.150
2.461E-11
4.64
5.309E-12
Band Exposure Quotient :
2.371E-10
GSM 935-960 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
935
940
945
950
955
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
942.200
2.433E-08
4.71
5.165E-09
941.600
1.366E-08
4.71
2.902E-09
958.800
5.531E-09
4.79
1.154E-09
952.800
4.975E-09
4.76
1.044E-09
936.800
4.176E-09
4.68
8.916E-10
957.400
3.994E-09
4.79
8.343E-10
954.400
3.876E-09
4.77
8.123E-10
937.800
3.563E-09
4.69
7.598E-10
954.800
3.458E-09
4.77
7.243E-10
956.400
3.023E-09
4.78
6.321E-10
Band Exposure Quotient :
2.996E-08
GSM 1808-1880 MHz
1E-12
1E-10
1E-08
1E-06
0.0001
0.01
1
1808
1823
1837
1851
1866
Frequency (MHz)
Exposure (W/m²)
Frequency
(MHz)
Maximum
Exposure
(W/m²)
ICNIRP
Limit
(W/m²)
Frequency
Exposure
Quotient
1,867.800
2.162E-05
9.34
2.315E-06
1,855.800
6.853E-06
9.28
7.385E-07
1,861.200
4.897E-06
9.31
5.262E-07
1,862.400
4.686E-06
9.31
5.032E-07
1,868.000
3.055E-07
9.34
3.271E-08
1,867.600
2.539E-07
9.34
2.719E-08
1,871.800
1.312E-07
9.36
1.402E-08
1,855.600
1.190E-07
9.28
1.283E-08
1,862.600
1.177E-07
9.31
1.264E-08
1,856.000
9.462E-08
9.28
1.020E-08
Band Exposure Quotient :
4.264E-06
Total Band Exposure Quotient :
4.294E-06
Number of Frequencies Used in Quotient :
1128
Page 8 of 9
17 May 2001
Printed:
MEA-V1.0
Location
:
The point at which the readings are taken. Each location is uniquely identified by its NGR coordinates and its
timestamp. A
description of the location should be sufficient to allow the position to be identified at a later date.
NGR
:
The coordinates of the location. In this survey they must be specified using a 100km tile identifier followed by a 4-
digit
easting and northing as defined in the Ordnance Survey National Grid Reference (NGR) system. N.B. This gives the
position of a location to 10 metre precision. E.g. TQ 3056 2184
Start Time
:
The date and time at which the receiver started taking its measurements at a location.
Antenna
:
The antenna device connected to the receiver. This is known by its serial number, type and manufacturer, and has an
associated calibration (see definition).
Calibration
:
A set of frequency (Hz) and K-factor (dB) pairs that define the gain characteristics of the antenna. Linear interpolation
is
used to obtain K-factor values for intermediate frequencies.
Sweep Band
:
The measurements are taken at regular frequency intervals within a band of frequencies. A sweep band is defined by
the
band title (which appears on each graph), start frequency, end frequency, frequency step, bandwidth and dwell time.
Exposure
:
This is the name given to the measured results. The maximum electric field strength values in decibel microvolts per
metre
(
d
B
(
μ
V/m)) are converted to power density in watts per square metre (W/m²).
Table Data
:
The 'Maximum Exposure' column consists of the ten highest exposure values in a band. Accompanying them are the
frequency at which the they occurred, the ICNIRP limit at that frequency (see definition), and the frequency exposure
quotient (see definition).
ICNIRP
:
International Commission for Non-Ionizing Radiation Protection
ICNIRP Limit
:
This is a guideline for the maximum permitted power density of microwave radiation for non-occupational public
exposure.
The guideline is frequency dependent and is currently defined as:
Frequency
ICNIRP Limit
Less than 400MHz
2W/m²
400MHz to 2GHz
(f / 200)W/m², where f is frequency in MHz
2GHz to 3GHz
1
0
W
/
m
²
Greater than 3GHz
undefined
Frequency Exposure Quotient
:
This is the ratio of the measured maximum electromagnetic power density to the ICNIRP limit at a given frequency. A
value
close to 1 signifies that exposure levels could be near to the maximum permitted at that frequency.
Band Exposure Quotient
:
The sum of all the frequency exposure quotients in a band at a single location.
Total Band Exposure Quotient
:
The sum of all the frequency exposure quotients in all bands at a single location.
Power Density:
The energy flowing from an antenna through a unit area normal to the direction of propagation in a unit time. This is
measured in watts per square metre (W/m²).
GSM:
Global System for Mobile communication
ETACS:
Extended Total Access Communications System
TETRA:
Terrestrial Trunked Radio
3G:
Third Generation mobile phone services
GLOSSARY
Page 9 of 9
17 May 2001
Printed:
MEA-V1.0