Mobile Telephone Base-station Audit for Didsbury Road Primary School

Russell Kent-Smith

Informations

• Publié par: Muvug
• Nombre de lectures: 16
• Langue: English

Extrait

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 [e-mail].

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