TIA/EIA TELECOMMUNICATIONS SYSTEMS BULLETIN

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TIA/EIA

TELECOMMUNICATIONS

SYSTEMS BULLETIN



Report on EME Evaluation for


RF Cabinet Emissions Under


FCC MPE Guidelines




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O
CTOBER
2008





TELECOMMUNICATIONS

INDUSTRY

ASSOCIATION







The Telecommunications Industry Association


represents the communications sector of


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TABLE OF CONTENTS

1.

INTRODUCTION

................................
................................
................................
........................

1

1.1.

S
COPE

................................
................................
................................
................................
.....

1

2.

REFERENCES

................................
................................
................................
...........................

1

3.

FCC ELECTROMAGNETIC
EMISSION LIMITS

................................
................................
.......

1

4.

LIMIT CASE ANALYSIS

................................
................................
................................
............

3

4.1.

C
ALCULATION OF
EME

LEVEL BASED ON THE
FCC

LIMIT OF
-
13

D
B
M FOR EACH OF THE



TRANSMITTER H
ARMONICS
(1
-
10).

................................
................................
.............................

3

4.2.

E
XAMPLE SPREADSHEET C
ALCULATIONS

................................
................................
....................

3

4.3.

C
ALCULATIONS AT REPRE
SENTATIVE FREQUENCIE
S
3

MH
Z


2

GH
Z

................................
...........

4

4.4.

M
EASUREMENT METHOD

................................
................................
................................
...........

5

5.

TRANSMITTER SITE CON
SIDERATIONS

................................
................................
...............

5

5.1.

S
ITE COMPLIANCE

................................
................................
................................
....................

5

6.

SUMMARY

................................
................................
................................
................................
.

6

ANNEX A

................................
................................
................................
................................
..........

A
-
1

ANNEX
B

................................
................................
................................
................................
..........

B
-
1



DOCUMENT REVISION HISTORY


Version

Date

Description

TSB
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July 1998

Initial release

TSB
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October 2008

Removed references to
vehicular application and
updated document style.








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FOREWORD


This forward is not part of this Telecommunications Systems Bulletin (TSB)

This TSB is the product of work un
dertaken by the Electromagnetic Energy (EME)
working group of the TIA TR8.17 RF Exposure subcommittee. The subcommittee
addresses Radio Frequency Exposure matters. TR8.17 is a subcommittee of TIA TR8
Mobile and Personal Private Radio Standards Engineerin
g Committee. This TSB was
revised and approved for publication at the October 16, 2008 meeting of TR8.17. The
motion to publish was ratified at the January 22, 2009 meeting of TR8.17.


There
are

two

annex
es
,
Annex
A

and Annex B
, in this TSB and
both are

informative.















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Patent Identification

The reader’s attention is called to the possibility that using this document might
necessitate the use of one or more inventions covered by patent rights. By publication
of this document no position is tak
en with respect to the validity of those claims or any
patent rights in connection therewith. The patent holders so far identified have, we
believe, filed statements of willingness to grant licenses under those rights on
reasonable and nondiscriminatory te
rms and conditions to applicants desiring to obtain
such licenses. The following patent holders and patents have been identified in
accordance with the TIA intellectual property rights policy:



None identified

TIA is not be responsible for identifying pat
ents for which licenses might be referenced
by this document or for conducting inquiries into the legal validity or scope of those
patents that are brought to its attention.

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1.

Introduction

1.1.

Scope

T
his TSB establishes and documents methods and procedures of evaluation to
establish compliance of fixed station cabinet emission levels with respect to the Federal
Communications Commission (FCC) electromagnetic exposure (EME) limits.
Specifically the EME

characterization is of box level equipment only, e.g., a fixed
station, control station, or similar equipment, This TSB is not a substitute for a complete
transmitter site environmental assessment (EA) by means of computational methods or
site measurement

or a combination of these two means. A limit case analysis based on
the 47 CFR part 90 certification requirements for spurious emissions limits included
herein shows that certified equipment at the box level is within the FCC maximum
permissible exposure

(MPE) limits.

2.

References

This Telecommunications System Bulletin contains only informative information.

There are references to TIA standards which contain normative elements. These
references are primarily to indicate the methods of measurement contained

in those
documents. At the time of publication, the edition indications were valid. All standards
and bulletins are subject to revision, and parties to agreements based on this document
are encouraged to investigate the possibility of applying the most re
cent edition of the
standard or bulletin indicated in Section 3. ANSI and TIA maintain registers of currently
valid national standards published by them.

There are references to FCC rules. The Federal Code of Regulations (CFR) is subject
to revision. The G
overnment Printing Office (GPO) maintains a listing of the latest
published titles.

3.

FCC Electromagnetic Emission Limits


Controlled and general population
RF Exposure Limits
a
re

shown in Table

1, below
.

The
RF Exposure Limits shown in Table 1 are the li
mits adopted by the FCC. The RF
exposure limits adopted by the FCC are generally based on recommendations from the
National Council on Radiation Protection and Measurements (NCRP) Report No. 86
and the American National Standards Institute (ANSI/IEEE) C95.
1
-
1992.
1




1

NCRP Report No. 86, "Biological Effects and Exposure Criteria for Radiofrequency Electromagnetic
Fields", sections 17.4.1, 17.4.1.1, 17.4.2 and 17.4.3; copyright NCRP, 1986, Bethes
da, Maryland 20814.
ANSI/IEEE C95.1
-
1992, "IEEE Standard for Safety Levels with Respect to Human Exposure to Radio
Frequency Electromagnetic Fields, 3 kHz to 300 GHz”, Section 4.1; copyright 1992 by the Institute of
Electrical and Electronics Engineers, I
nc., New York, New York 10017.

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Table 1

MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS
2


(A) Limits for Occupational/Controlled Exposure









Frequency


Electric Field

Magnetic Field

Power Density

Averaging Time


Range

Strength (E)

Strength (H)

(S)



(MHz)

(V/m)

(A/m)

(
mW/sq. cm)

(minutes)










0.3
-
3.0

614

1.63

(100)*

6


3.0
-
30

1842/f

4.89/f

(900/f
2
)*

6


30
-
300

61.4

0.163

1.0

6


300
-
1500

--


--


f/300

6


1500
-
100,000

--

--

5

6








(B) Limits for General Population/Uncontrolled Exposure









Frequ
ency


Electric Field

Magnetic Field

Power Density

Averaging Time


Range

Strength (E)

Strength (H)

(S)



(MHz)

(V/m)

(A/m)

(mW/sq. cm)

(minutes)









0.3
-
1.34

614

1.63

(100)*

30


1.34
-
30

824/f

2.19/f

(180/f
2
)*

30


30
-
300

27.5

0.073

0.2

30


30
0
-
1500

--

--

f/1500

30


1500
-
100,000

--

--

1.0

30







f = frequency in MHz

*Plane
-
wave equivalent power density








2

See 47 CFR
§
1
.
1310.

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4.

Limit Case Analysis

This analysis is structured to show that equipment that conforms to FCC emission limits
for the carrier and its harmonic
s, through the tenth, will result in an equipment level
EME that is compliant to the MPE limits as set forth in 47 CFR § 1.1310.

4.1.

Calculation of EME level based on the FCC limit of
-
13 dBm for


each of

the

transmitter harmonics (1
-
10).

The limit c
ase calculation will compute the resultant EME level, as a percent of the MPE
level, of a transmitter that exhibits the maximum allowable cabinet emission limits as
defined in 47 CFR § 90.210. This maximum level is a spurious emission that is
attenuated b
y at least 43 + 10 log(P) dB, with P being the transmitter average power in
watts or equivalently
-
13 dBm.

The cabinet emissions are considered to be emitted from a point source. As such it is
necessary to define a distance at which the power density will

be calculated.
A distance
of 20 cm
is

used based on the

ANSI/
IEEE C95.3
-
2002
“Recommended Practice for the
Measurement of Potentially Hazardous Electromagnetic Fields


RF and Microwave”
recommendation of a minimum separation
distance of 20 cm
between th
e probe and the
perturbing object.

This will allow controlled population to be sufficiently close to the
equipment to allow direct observation or normal service interface through a terminal
device or similar equipment.

4.2.

Example spreadsheet calculations

Cal
culation method:

1.

Compute the power density, S, using equation 1, for each harmonic at the maximum
allowable FCC radiated level (
-
13 dBm), at the specified distance, 20 cm, for the
horizontal polarization, “where Prad is the power radiated”.

S = (P
rad

x 1.6
4)/(


x r

2
) mW/cm
2
, r=20 cm

(1)

P
rad

is the radiated power

(mW)

R

is the minimum working distance

(cm)

2.

Compute percent of MPE for each harmonic using equation 2.

%MPE(f
n
) = 100 x S(f
n
)/MPE(f
n
)

(2)

MPE(fn)

is the allowable MPE for each transmitter harmonic

, n = 1 to 10;

S(f
n
)

is the power density for each transmitter harmonic, n = 1 to 10;


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3.

%MPE(h) = Sum of %MPE(f
n)
, n = 1
-
10.

%MPE(h)

is the percent of the maximum permissible exposure in the horizontal
polarization

4.

Repeat steps 1
-
3 for vertical polarizati
on.

5.

Total %MPE = %MPE(h) + %MPE(v)

4.3.

Calculations at representative frequencies 3 MHz


2
GHz

Tables

showing the complete set of calculations (horizontal and vertical polarization) for
each frequency and its harmonics are included in Annex A. Table 2 below
shows the
highest level computed for each of the various Fundamental Frequencies shown in
Annex A.

Table
1

Maximum
Resultant Controlled and General Population Percentage of

FCC
MPE
limits

for each Fundamental Frequency shown in Ann
ex A


Fundamental
Frequency
(MHz)

Controlled

Population

% MPE

General

Population

%
MPE

3

1.26E
-
02

6.30E
-
02

30

3.27E
-
02

1.64E
-
01

450

8.58E
-
03

4.29E
-
02

900

6.98E
-
03

3.49E
-
02

1900

6.54E
-
03

3.27E
-
02


The highest
(worst case)
computed level, as shown in T
able
2,

above at a Fundamental
Frequency of 30 MHz, is more than 600 times [1/(1.64E
-
01/100)=609.8] below the FCC
MPE limits.
However, one must consider what would happen if there were some
additional spurious energy that was not at the harmonic frequenci
es. T
o reach the MPE
limits at the Fundamental F
requency
of 30 MHz
would require a total of approximately
6000 individual spurs, with each
spur
radiating at exactly the FCC spurious limit with
equal horizontal and vertical polarized energy. In practice t
he spurious emissions from
a cabinet will include transmitter harmonic content and spurious emissions from clocks
and references that are associated with control and signal processing functions. While,
industry experience has shown that the transmitter ha
rmonic responses are the primary
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contributors to the spurious emissions, each transmitter design should be carefully
assessed with respect to non
-
harmonic content.

4.4.

Measurement method

The measurement method is as stated in TIA
-
603
-
C clause 2.2.12 Radiated S
purious
Emissions with the following modification:

The carrier
-
radiated emission, terminated in a non
-
radiating load, must also be
measured for horizontal and vertical polarization.


5.

Transmitter Site Considerations

5.1.

Site compliance

Th
e

analysis
in this TSB
indicates compliance with the
FCC
equipment certification
requirements for equipments
used at

a transmitter site,
in and of themselves should not
exceed the RF exposure limits established by the FCC
.

To assure that any transmitter site whether a base sta
tion site
,

a control station site or a
similar transmitting facility complies with the FCC exposure limits, all site operators are
reminded
an RF Safety Program that includes procedures for
"Evaluating Compliance
with FCC
-
Specified Guidelines for Human Exp
os
ure to Radiofrequency Radiation
"

consistent with the
FCC

OET Bulletin Number 65

may be required.

Transmitter site
e
quipment
conforming
to the FCC
certification requirements
implies the
equipment itself

is within recommended MPE level limits, but does no
t imply that the
overall
transmitter
site conforms to FCC MPE guidelines. Additional computations or measurements or a
combination of both at each transmitter site will determine what precautions
and
operational procedures
are necessary for each particula
r site to meet MPE guidelines.
Proper installation of antenna distribution systems, work practices, etc. are required for
a site to conform with FCC guidelines for human exposure to electromagnetic energy.


Manufacturers of
FCC
certified transmitter site

equipment are strongly encouraged to
advise all
users
, in their product documentation and elsewhere,

that utilization of FCC
certified transmitter site equipment
does not in and of itself constitute complete
compliance with all FCC RF safety requirements.

Manufacturers should also advise all
users
about

the need to institute appropriate RF Safety Programs to comply with FCC
RF safety requirements.
A suggested notice for manufacturers to include in
documentation
for transmitter site equipment
is shown in
Annex B.

All users should obtain competent advice as ne
cessary

to assure
any

RF Safety
Program and
all

operations comply with all FCC RF safety requirements.



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6.

Summary

By itself, e
quipment
conforming
to FCC certification requirements (cabinet emissions)
h
as a resultant electromagnetic exposure level that is several orders of magnitude
below the
FCC established
maximum permissible exposure level
s
. This ensures that
cabinet level emissions from individual, type accepted equipment, that is properly
installed

and maintained, does not constitute an EME hazard. This does not imply that
a particular site

where such
FCC certified equipment

is utilized
, is in fact a non
-
hazardous transmitter installation. The FCC limits for cabinet RF emissions assures
that unint
entional cabinet emissions, at distances suitable for maintenance activities,
are below the FCC MPE limits. However, the levels of intentional emission must be
characterized by means of computation or measurement, to determine what precautions
and work pr
actices must be adhered to for each transmitter site.

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Annex A


Computation of Percent of Maximum Permissible Exposure

(Informative)



PERCENT OF MPE FOR EQUIPMENT MEASURED PER TIA-603-C §2.2.12 RADIATED SPURIOUS EMISSIONS
CONSTANTS
Date:
12/19/2008
DIPOLE GAIN =
2.15
Transmitter Description:
Example EME Computation
WORKER STD CONST 3 =
1.34
Transmitter Model Number:
FCC Type Acceptance
WORKER STD CONST 4 =
30
Test Location:
Theoretical Limit
WORKER STD CONST 5 =
300
Distance to Computation, cm:
20
WORKER STD CONST 6 =
900
WORKER STD CONST 7 =
1500
VERTICAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
3.00
-13.00
1.64E-05
100.00
1.64E-05
20.00
8.18E-05
6.00
-13.00
1.64E-05
25.00
6.54E-05
5.00
3.27E-04
9.00
-13.00
1.64E-05
11.11
1.47E-04
2.22
7.36E-04
12.00
-13.00
1.64E-05
6.25
2.62E-04
1.25
1.31E-03
15.00
-13.00
1.64E-05
4.00
4.09E-04
0.80
2.04E-03
18.00
-13.00
1.64E-05
2.78
5.89E-04
0.56
2.94E-03
21.00
-13.00
1.64E-05
2.04
8.02E-04
0.41
4.01E-03
24.00
-13.00
1.64E-05
1.56
1.05E-03
0.31
5.23E-03
27.00
-13.00
1.64E-05
1.23
1.32E-03
0.25
6.62E-03
30.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
SUM =
6.30E-03
3.15E-02
HORIZONTAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
3.00
-13.00
1.64E-05
100.00
1.64E-05
20.00
8.18E-05
6.00
-13.00
1.64E-05
25.00
6.54E-05
5.00
3.27E-04
9.00
-13.00
1.64E-05
11.11
1.47E-04
2.22
7.36E-04
12.00
-13.00
1.64E-05
6.25
2.62E-04
1.25
1.31E-03
15.00
-13.00
1.64E-05
4.00
4.09E-04
0.80
2.04E-03
18.00
-13.00
1.64E-05
2.78
5.89E-04
0.56
2.94E-03
21.00
-13.00
1.64E-05
2.04
8.02E-04
0.41
4.01E-03
24.00
-13.00
1.64E-05
1.56
1.05E-03
0.31
5.23E-03
27.00
-13.00
1.64E-05
1.23
1.32E-03
0.25
6.62E-03
30.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
SUM =
6.30E-03
3.15E-02
TOTAL PERCENT OF FCC MPE =
1.26E-02
6.30E-02






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PERCENT OF MPE FOR EQUIPMENT MEASURED PER TIA-603-C §2.2.12 RADIATED SPURIOUS EMISSIONS
CONSTANTS
Date:
12/19/2008
DIPOLE GAIN =
2.15
Transmitter Description:
Example EME Computation
WORKER STD CONST 3 =
1.34
Transmitter Model Number:
FCC Type Acceptance
WORKER STD CONST 4 =
30
Test Location:
Theoretical Limit
WORKER STD CONST 5 =
300
Distance to Computation, cm:
20
WORKER STD CONST 6 =
900
WORKER STD CONST 7 =
1500
VERTICAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
30.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
60.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
90.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
120.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
150.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
180.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
210.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
240.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
270.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
300.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
SUM =
1.64E-02
8.18E-02
HORIZONTAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
30.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
60.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
90.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
120.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
150.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
180.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
210.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
240.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
270.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
300.00
-13.00
1.64E-05
1.00
1.64E-03
0.20
8.18E-03
SUM =
1.64E-02
8.18E-02
TOTAL PERCENT OF FCC MPE =
3.27E-02
1.64E-01









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PERCENT OF MPE FOR EQUIPMENT MEASURED PER TIA-603-C §2.2.12 RADIATED SPURIOUS EMISSIONS
CONSTANTS
Date:
12/19/2008
DIPOLE GAIN =
2.15
Transmitter Description:
Example EME Computation
WORKER STD CONST 3 =
1.34
Transmitter Model Number:
FCC Type Acceptance
WORKER STD CONST 4 =
30
Test Location:
Theoretical Limit
WORKER STD CONST 5 =
300
Distance to Computation, cm:
20
WORKER STD CONST 6 =
900
WORKER STD CONST 7 =
1500
VERTICAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
450.00
-13.00
1.64E-05
1.50
1.09E-03
0.30
5.45E-03
900.00
-13.00
1.64E-05
3.00
5.45E-04
0.60
2.73E-03
1,350.00
-13.00
1.64E-05
4.50
3.64E-04
0.90
1.82E-03
1,800.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
2,250.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
2,700.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,150.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,600.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
4,050.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
4,500.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
SUM =
4.29E-03
2.14E-02
HORIZONTAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
450.00
-13.00
1.64E-05
1.50
1.09E-03
0.30
5.45E-03
900.00
-13.00
1.64E-05
3.00
5.45E-04
0.60
2.73E-03
1,350.00
-13.00
1.64E-05
4.50
3.64E-04
0.90
1.82E-03
1,800.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
2,250.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
2,700.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,150.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,600.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
4,050.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
4,500.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
SUM =
4.29E-03
2.14E-02
TOTAL PERCENT OF FCC MPE =
8.58E-03
4.29E-02






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PERCENT OF MPE FOR EQUIPMENT MEASURED PER TIA-603-C §2.2.12 RADIATED SPURIOUS EMISSIONS
CONSTANTS
Date:
12/19/2008
DIPOLE GAIN =
2.15
Transmitter Description:
Example EME Computation
WORKER STD CONST 3 =
1.34
Transmitter Model Number:
FCC Type Acceptance
WORKER STD CONST 4 =
30
Test Location:
Theoretical Limit
WORKER STD CONST 5 =
300
Distance to Computation, cm:
20
WORKER STD CONST 6 =
900
WORKER STD CONST 7 =
1500
VERTICAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
900.00
-13.00
1.64E-05
3.00
5.45E-04
0.60
2.73E-03
1,800.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
2,700.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,600.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
4,500.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
5,400.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
6,300.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
7,200.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
8,100.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
9,000.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
SUM =
3.49E-03
1.74E-02
HORIZONTAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
900.00
-13.00
1.64E-05
3.00
5.45E-04
0.60
2.73E-03
1,800.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
2,700.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,600.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
4,500.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
5,400.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
6,300.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
7,200.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
8,100.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
9,000.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
SUM =
3.49E-03
1.74E-02
TOTAL PERCENT OF FCC MPE =
6.98E-03
3.49E-02





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PERCENT OF MPE FOR EQUIPMENT MEASURED PER TIA-603-C §2.2.12 RADIATED SPURIOUS EMISSIONS
CONSTANTS
Date:
12/19/2008
DIPOLE GAIN =
2.15
Transmitter Description:
Example EME Computation
WORKER STD CONST 3 =
1.34
Transmitter Model Number:
FCC Type Acceptance
WORKER STD CONST 4 =
30
Test Location:
Theoretical Limit
WORKER STD CONST 5 =
300
Distance to Computation, cm:
20
WORKER STD CONST 6 =
900
WORKER STD CONST 7 =
1500
VERTICAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
1,900.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,800.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
5,700.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
7,600.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
9,500.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
11,400.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
13,300.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
15,200.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
17,100.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
19,000.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
SUM =
3.27E-03
1.64E-02
HORIZONTAL POL.
COMPUTED
FCC
WORKER
FCC
GEN POP
FREQUENCY
MEASURED POWER
POWER DENSITY
WORKER MPE
PERCENT
GEN POP. MPE
PERCENT
(MHz)
(dBm)
(mW/sq. cm)
(mW/sq. cm)
OF FCC MPE
(mW/sq. cm)
OF FCC MPE
1,900.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
3,800.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
5,700.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
7,600.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
9,500.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
11,400.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
13,300.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
15,200.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
17,100.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
19,000.00
-13.00
1.64E-05
5.00
3.27E-04
1.00
1.64E-03
SUM =
3.27E-03
1.64E-02
TOTAL PERCENT OF FCC MPE =
6.54E-03
3.27E-02







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Annex
B



Suggested
RF Safety Notification for
Manufacturer’s Transmitting Site
Equipment Documentation

(Informative)


Compliance with FCC RF Safety Requirements

Compliance with the spurious emissions limitations associated with
the
requirements for
FCC transmission site cert
ified equipment indicates the
spurious emissions for this equipment, by themselves, do not exceed the
FCC adopted limitations for Maximum Permissible Exposure outlined in

47 C.F.R.
§
1.1310.

All station owners and users are reminded that us
e of

FCC certi
fied
transmitting equipment at a transmitting site does not assure full
compliance with all FCC RF Safety requirements.

All station owners and users
are reminded

appropriate RF Safety Programs
to assure all stations and all operations are in compliance w
ith the
necessary

FCC RF Safety requirements

may be needed
.

All station owners and users are
cautioned

to engage the services of
competent advisors,
to assure that
any

RF Safety Program instituted
address
es

all necessary action
s

required by the FCC RF Sa
fety
requirements.






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