Mobile Phone Base-station Audit for Chipping Camden School

Russell Kent-Smith

Description

Mobile Telephone Base-station Radio Emission AuditAUDIT SITE : Chipping Camden SchoolCider Mill LaneChipping CamdenGloucestershireGL55 6HUThe 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 ...

Informations

• Publié par: Erzo
• Nombre de lectures: 12
• Langue: English

Extrait

AUDIT SITE :

Mobile Telephone Basestation Radio Emission Audit

Chipping Camden School Cider Mill Lane Chipping Camden Gloucestershire GL55 6HU

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 atwww.radio.where further information on the audit can be found.

Further explanation of the results and their context within ICNIRP 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 athttp://www.dfee.gov.uk/a z/mobilephones.html.

Printed 19 A

Page 1 of 9

MEAV1.0

R

e

The Radiocommunications A gency performed this survey of the RF emission environment prevailing in the vicinity of Chipping Camden School on 1 9 A

A s 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.

pril 20

It can be seen from this report that the highest value Total Band E xposure Quotient was 1 . 830 E  0 4 measured at location "playing fields cricke approximately 1 /5464 of the ICNIRP maximum guideline reference level for public exposure.

Issued on behalf of the Radiocommunications A

A ndrew Cox Radiocommunications Specialist

Printed: 1

9

Page 2 of 9

gency

M

E

A

945 950 Frequency (MHz)

4.320E06

Antenna: Manufacturer: Model: Serial Number:

0.1

10

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 1,848.800 2.822E05 9.24 3.053E06 1,849.400 9.355E06 9.25 1.012E06 1,847.000 1.070E06 9.23 1.158E07 1,848.600 5.376E07 9.24 5.816E08 1,850.200 2.247E07 9.25 2.429E08 1,849.000 1.551E07 9.24 1.678E08 1,849.200 1.233E07 9.25 1.333E08 1,849.600 4.180E08 9.25 4.520E09 1,846.800 1.546E08 9.23 1.674E09 1,832.200 8.475E09 9.16 9.251E10 Band Exposure Quotient : 4.304E06

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 928.850 3.490E11 4.64 7.515E12 932.650 3.138E12 4.66 6.729E13 925.825 1.288E12 4.63 2.782E13 925.800 1.288E12 4.63 2.782E13 925.750 1.174E12 4.63 2.537E13 929.200 1.130E12 4.65 2.433E13 925.775 1.121E12 4.63 2.423E13 926.825 1.074E12 4.63 2.317E13 917.900 1.052E12 4.59 2.292E13 917.850 1.052E12 4.59 2.291E13 Band Exposure Quotient : 5.168E11

Rohde & Schwarz HE200.4050.3609.02 839891/005

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 956.000 1.905E08 4.78 3.986E09 939.000 1.633E08 4.70 3.478E09 946.800 1.002E08 4.73 2.116E09 949.800 8.200E09 4.75 1.727E09 942.800 7.359E09 4.71 1.561E09 935.800 3.800E09 4.68 8.122E10 937.600 1.591E09 4.69 3.393E10 948.600 1.357E09 4.74 2.861E10 954.400 7.218E10 4.77 1.513E10 952.400 5.840E10 4.76 1.226E10 Band Exposure Quotient : 1.574E08

ROHDE&SCHWARZ EB200 839.186/046,V02.504052.4654.

MEAV1.0

Total Band Exposure Quotient :

Receiver: Manufacturer: Model: Serial Number:

1

10:05:58

920

1128

Printed 19 A

1823

1837 1851 Frequency (MHz)

ETACS 917933 MHz

940

Chipping Camden School

1

Page 3 of 9

923 927 Frequency (MHz)

front carpark near youth centre

930

Site: Location:

NGR: Start Time: En

GSM 935960 MHz

1E08

1E10

1E12 935

GSM 18081880 MHz

955

1E08

1E10

1E12 1808

1866

Number of Frequencies Used in Quotient :

0.01

0.0001

1E06

1E06

0.01

0.0001

1E11

1E13 917

1E07

1E09

0.001

1E05

ST30263796 19 Apr 2001 Andrew Cox

Receiver: Manufacturer: Model: Serial Number:

1

0.1

10

920

10:28:40

Antenna: Manufacturer: Model: Serial Number:

6.825E06

945 950 Frequency (MHz)

1E08

1E10

1E12 935

GSM 935960 MHz

Site: Location:

NGR: Start Time: En

0.01

Number of Frequencies Used in Quotient :

1E06

0.0001

1E10

1E08

1866

1E12 1808

955

GSM 18081880 MHz

940

Page 4 of 9

Chipping Camden School

1823

1

1837 1851 Frequency (MHz)

Printed 19 A

1128

Total Band Exposure Quotient :

ETACS 917933 MHz

0.001

1E05

1E07

1E09

923 927 Frequency (MHz)

19 Apr 2001 Andrew Cox

930

benches by sports centre carpark

ST 3026 3796

1E06

1E13 917

1E11

0.0001

0.01

ROHDE&SCHWARZ EB200 839.186/046,V02.504052.4654.

MEAV1.0

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 1,849.400 2.094E05 9.25 2.265E06 1,847.000 2.086E05 9.23 2.258E06 1,851.600 1.917E05 9.26 2.071E06 1,848.800 5.631E07 9.24 6.092E08 1,851.400 3.255E07 9.26 3.516E08 1,849.200 2.460E07 9.25 2.660E08 1,846.800 2.286E07 9.23 2.476E08 1,849.600 1.292E07 9.25 1.397E08 1,847.200 1.286E07 9.24 1.393E08 1,851.800 1.104E07 9.26 1.192E08 Band Exposure Quotient : 6.805E06

Rohde & Schwarz HE200.4050.3609.02 839891/005

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 926.800 7.093E12 4.63 1.531E12 929.225 4.822E12 4.65 1.038E12 925.775 4.784E12 4.63 1.033E12 926.825 4.475E12 4.63 9.657E13 929.200 4.397E12 4.65 9.465E13 929.175 3.574E12 4.65 7.693E13 931.850 3.514E12 4.66 7.543E13 925.825 3.310E12 4.63 7.150E13 925.800 3.161E12 4.63 6.828E13 926.775 2.956E12 4.63 6.380E13 Band Exposure Quotient : 5.205E11

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 939.000 2.203E08 4.70 4.692E09 946.800 2.142E08 4.73 4.525E09 949.800 1.753E08 4.75 3.691E09 942.800 1.537E08 4.71 3.261E09 956.000 9.333E09 4.78 1.952E09 935.800 2.088E09 4.68 4.463E10 937.600 1.869E09 4.69 3.987E10 948.600 6.062E10 4.74 1.278E10 942.000 5.970E10 4.71 1.268E10 940.800 4.313E10 4.70 9.169E11 Band Exposure Quotient : 2.028E08

ROHDE&SCHWARZ EB200 839.186/046,V02.504052.4654.

MEAV1.0

Antenna: Manufacturer: Model: Serial Number:

7.706E05

Receiver: Manufacturer: Model: Serial Number:

945 950 Frequency (MHz)

Printed 19 A

1823

Page 5 of 9

1

10:53:33

Total Band Exposure Quotient :

940

ETACS 917933 MHz

Chipping Camden School

1

0.1

920

10

1E06

0.0001

0.01

1E13 917

19 Apr 2001 Andrew Cox

0.001

923 927 Frequency (MHz)

1E09

1E11

1E05

1E07

Site: Location:

NGR: Start Time: En

930

GSM 935960 MHz

ST 3026 3796

1E12 935

1E10

playing fields far side of tennis court

1E10

1E12 1808

1866

GSM 18081880 MHz

955

1E08

1128

1837 1851 Frequency (MHz)

Number of Frequencies Used in Quotient :

0.01

0.0001

1E06

1E08

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 926.750 7.092E11 4.63 1.530E11 929.225 4.500E11 4.65 9.686E12 929.250 3.830E11 4.65 8.244E12 929.175 3.830E11 4.65 8.243E12 926.825 3.722E11 4.63 8.033E12 925.800 3.546E11 4.63 7.661E12 926.800 3.395E11 4.63 7.326E12 926.875 3.097E11 4.63 6.682E12 929.200 3.042E11 4.65 6.548E12 926.725 3.025E11 4.63 6.528E12 Band Exposure Quotient : 1.886E10

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 939.000 4.198E07 4.70 8.941E08 949.800 3.046E07 4.75 6.415E08 956.000 2.570E07 4.78 5.377E08 946.800 2.517E07 4.73 5.316E08 942.800 1.981E07 4.71 4.202E08 935.800 3.800E08 4.68 8.122E09 954.400 3.376E08 4.77 7.075E09 948.600 2.901E08 4.74 6.117E09 957.200 2.405E08 4.79 5.026E09 956.800 2.243E08 4.78 4.688E09 Band Exposure Quotient : 3.662E07

Rohde & Schwarz HE200.4050.3609.02 839891/005

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 1,847.000 5.744E04 9.23 6.220E05 1,849.400 6.040E05 9.25 6.532E06 1,851.600 5.281E05 9.26 5.704E06 1,846.800 7.570E06 9.23 8.198E07 1,847.200 4.260E06 9.24 4.612E07 1,848.800 1.177E06 9.24 1.273E07 1,830.400 9.264E07 9.15 1.012E07 1,849.200 7.779E07 9.25 8.413E08 1,821.400 6.167E07 9.11 6.771E08 1,829.200 5.080E07 9.15 5.555E08 Band Exposure Quotient : 7.669E05

MEAV1.0

ROHDE&SCHWARZ EB200 839.186/046,V02.504052.4654.

Rohde & Schwarz HE200.4050.3609.02 839891/005

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 918.150 3.821E10 4.59 8.323E11 925.800 2.629E11 4.63 5.680E12 925.825 2.511E11 4.63 5.424E12 926.800 1.516E11 4.63 3.272E12 925.750 1.288E11 4.63 2.782E12 925.775 1.230E11 4.63 2.656E12 925.850 1.122E11 4.63 2.423E12 926.825 1.074E11 4.63 2.317E12 926.750 9.349E12 4.63 2.018E12 926.775 9.136E12 4.63 1.972E12 Band Exposure Quotient : 1.679E10

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 1,847.000 1.582E03 9.23 1.713E04 1,849.400 3.170E05 9.25 3.428E06 1,850.000 2.097E05 9.25 2.267E06 1,846.800 2.038E05 9.23 2.207E06 1,848.800 1.382E05 9.24 1.495E06 1,847.200 8.900E06 9.24 9.636E07 1,868.600 6.538E07 9.34 6.998E08 1,861.600 5.014E07 9.31 5.387E08 1,849.200 4.177E07 9.25 4.518E08 1,824.200 2.768E07 9.12 3.035E08 Band Exposure Quotient : 1.820E04

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 949.800 1.458E06 4.75 3.070E07 956.000 1.202E06 4.78 2.515E07 939.000 7.816E07 4.70 1.665E07 935.800 2.690E07 4.68 5.750E08 942.800 2.552E07 4.71 5.413E08 955.600 1.777E07 4.78 3.718E08 954.400 1.375E07 4.77 2.882E08 946.800 1.073E07 4.73 2.268E08 948.600 1.029E07 4.74 2.170E08 956.800 8.726E08 4.78 1.824E08 Band Exposure Quotient : 1.012E06

1837 1851 Frequency (MHz)

0.0001

1E06

Number of Frequencies Used in Quotient :

0.01

945 950 Frequency (MHz)

955

GSM 18081880 MHz

1866

1E12 1808

1E10

1E08

GSM 935960 MHz

1E12 935

1E10

1E08

Total Band Exposure Quotient :

Receiver: Manufacturer: Model: Serial Number:

ETACS 917933 MHz

1823

1128

Printed 19 A

Page 6 of 9

940

1

Site: Location:

NGR: Start Time: En

930

923 927 Frequency (MHz)

11:14:36

playing fields cricket wicket

Chipping Camden School

ST 3026 3796

19 Apr 2001 Andrew Cox

1E05

0.001

1E09

1E07

1E13 917

1E11

0.0001

0.01

1E06

1.830E04

1

Antenna: Manufacturer: Model: Serial Number:

10

0.1

920

1.708E06

923 927 Frequency (MHz)

Receiver: Manufacturer: Model: Serial Number:

ST 3026 3796

room t11 technology and sixth form block

NGR: Start Time: En

Site: Location:

930

19 Apr 2001 Andrew Cox

0.001

1E05

1E07

1E09

1E11

1E13 917

0.01

0.0001

1E06

1128

Printed 19 A

1837 1851 Frequency (MHz)

0.01

Number of Frequencies Used in Quotient :

1E08

1E10

0.0001

1E06

GSM 18081880 MHz

955

1E12 1808

1866

1E08

1E10

945 950 Frequency (MHz)

GSM 935960 MHz

1E12 935

Total Band Exposure Quotient :

11:53:17

Chipping Camden School

1

1823

ETACS 917933 MHz

940

Page 7 of 9

Antenna: Manufacturer: Model: Serial Number:

0.1

10

920

1

MEAV1.0

ROHDE&SCHWARZ EB200 839.186/046,V02.504052.4654.

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 939.000 1.710E09 4.70 3.642E10 949.800 1.562E09 4.75 3.290E10 956.000 1.479E09 4.78 3.094E10 935.800 9.546E10 4.68 2.040E10 946.800 6.619E10 4.73 1.398E10 954.400 4.250E10 4.77 8.906E11 952.400 3.065E10 4.76 6.436E11 937.600 2.580E10 4.69 5.503E11 948.400 2.251E10 4.74 4.747E11 942.800 2.222E10 4.71 4.714E11 Band Exposure Quotient : 2.089E09

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 924.000 3.698E12 4.62 8.005E13 925.000 2.624E12 4.63 5.674E13 917.700 1.628E12 4.59 3.548E13 917.575 1.385E12 4.59 3.020E13 917.625 1.264E12 4.59 2.754E13 929.200 1.184E12 4.65 2.548E13 917.600 1.126E12 4.59 2.455E13 929.225 1.080E12 4.65 2.323E13 917.675 1.076E12 4.59 2.344E13 929.175 1.055E12 4.65 2.270E13 Band Exposure Quotient : 4.624E11

Rohde & Schwarz HE200.4050.3609.02 839891/005

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 1,847.000 1.378E05 9.23 1.492E06 1,848.800 9.345E07 9.24 1.011E07 1,850.000 5.029E07 9.25 5.437E08 1,846.800 1.902E07 9.23 2.059E08 1,849.400 1.702E07 9.25 1.841E08 1,847.200 9.320E08 9.24 1.009E08 1,848.600 1.350E08 9.24 1.461E09 1,861.600 9.337E09 9.31 1.003E09 1,868.600 8.231E09 9.34 8.810E10 1,824.200 7.623E09 9.12 8.358E10 Band Exposure Quotient : 1.706E06

ROHDE&SCHWARZ EB200 839.186/046,V02.504052.4654.

MEAV1.0

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 917.775 1.745E12 4.59 3.802E13 917.250 1.626E12 4.59 3.546E13 925.825 1.513E12 4.63 3.268E13 926.825 9.568E13 4.63 2.065E13 925.800 9.546E13 4.63 2.062E13 926.800 7.093E13 4.63 1.531E13 926.850 6.932E13 4.63 1.496E13 925.750 6.914E13 4.63 1.494E13 925.850 6.164E13 4.63 1.331E13 925.775 5.885E13 4.63 1.271E13 Band Exposure Quotient : 4.191E11

Rohde & Schwarz HE200.4050.3609.02 839891/005

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 1,848.800 1.001E04 9.24 1.083E05 1,850.000 2.701E05 9.25 2.920E06 1,847.000 2.134E06 9.23 2.311E07 1,849.400 1.321E06 9.25 1.429E07 1,848.600 1.290E06 9.24 1.395E07 1,849.000 5.633E07 9.24 6.093E08 1,850.200 2.702E07 9.25 2.921E08 1,849.800 2.246E07 9.25 2.428E08 1,851.600 9.391E08 9.26 1.014E08 1,832.200 3.222E08 9.16 3.517E09 Band Exposure Quotient : 1.441E05

Frequency Maximum ICNIRP Frequency (MHz) Exposure Limit Exposure (W/m²) (W/m²) Quotient 939.000 9.183E09 4.70 1.956E09 949.800 6.220E09 4.75 1.310E09 946.800 5.899E09 4.73 1.246E09 956.000 5.370E09 4.78 1.123E09 942.800 3.952E09 4.71 8.383E10 935.800 1.258E09 4.68 2.689E10 948.600 4.391E10 4.74 9.259E11 937.600 3.248E10 4.69 6.928E11 956.800 1.999E10 4.78 4.178E11 957.200 1.483E10 4.79 3.099E11 Band Exposure Quotient : 7.426E09

19 Apr 2001 Andrew Cox

0.001

classroom w5

ST 3026 3796

Chipping Camden School

923 927 Frequency (MHz)

12:25:54

930

1E06

0.0001

0.01

1E13 917

1E11

1E09

1E07

1E05

0.0001

1E06

1E08

1E10

1837 1851 Frequency (MHz)

Number of Frequencies Used in Quotient :

0.01

NGR: Start Time: En

Site: Location:

1E12 935

GSM 935960 MHz

1E10

1E08

1866

1E12 1808

955

GSM 18081880 MHz

Total Band Exposure Quotient :

Receiver: Manufacturer: Model: Serial Number:

940

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ETACS 917933 MHz

1823

1

Printed 19 A

1128

Antenna: Manufacturer: Model: Serial Number:

10

0.1

920

1

1.442E05

945 950 Frequency (MHz)

Location: The timestamp. descri

NG:

The coordinates of the location. In this surve digi eastin

GLOSSARY

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 b associated calibration

Calibration:

Swee

Ex

is used to obtain Kfactor values for intermediate fre

: The measurements are taken at re the band title

: This is the name metr (dB(mV/m)) are converted to power density in watts per square metre (W/m²).

Table Data: The 'Maximum Ex fre quotient (see definition).

ICNIRP: International Commission for NonIonizin

ICNIRP Limi: This is a ex The

Fre

Frequenc Less than 400MH 400MHz to 2GHz 2GHz to 3GHz Greater than 3GHz

: This is the ratio of the measured maximum electroma value close to 1 si

Band Ex: The sum of all the fre

Total Band Ex: The sum of all the fre

ICNIRP Limi 2W/m²

10 W/m undefined

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

GSM: ETACS: TETRA: 3G:

Global S Extended Total Access Communications S Terrestrial Trunked Radio Third Generation mobile

Printed 19 A

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MEAV1.0