Short Description related to Regulator policy, measurements procedures & public communication about Radio Signal and Health .

1. Radio Signals and Health
Regulator’s Perspectives & Public Approach
INDEX
1. INTRODUCTION
2. REGULATORY FRAME
3. RF HUMAN EXPOSURE LIMITS
4. MEASUREMENTS PROCEDURES
5. TRAININGS FOR PERSONNEL
6. PUBLIC OUTREACH/COMMUNICATIONS
7. REFERENCES

2. 1.INTRODUCTION
It is very known, that the public have many concerns about
Radio Signals and Health, on that sense, the regulatory
bodies have to ‘Construct’ or to ‘Establish’ the requiered rules
& procedures in order to define a ‘Regualtory Frame’.
Radio Signals and Health
Regulator’s Perspectives & Public Approach

3. 2.REGULATORY FRAME
This determines the types of actions, rules, exposure limits,
administratives & RF measurements procedures,
recommendations, etc., that are going to be follos/accounted
in order to verify the compliance of the telecom equipment
used by operators to porvide wireless telecom services.
Radio Signals and Health
Regulator’s Perspectives & Public Approach

4. 3.RF HUMAN EXPOSURE LIMITS
The following organizations have been involved on the human
RF exposure limits studies: WHO, IARC, ICNIRP, GSMA,
EMF-PORTAL.
The next slide have the recommended the following RF
Humnan Exposure Limits, it is important to note those limits
are non mandatory, so every regulator body have the
freedom to establish their own exposure limits and to develop
a site compliance management structure
Radio Signals and Health
Regulator’s Perspectives & Public Approach

5. 3.RF HUMAN EXPOSURE LIMITS
ICNIRP -Basic restriction for SAR
Radio Signals and Health
Regulator’s Perspectives & Public Approach
Type of
Exposure
Frequency
Range
Whole-body
Average SAR
(W/kg)
Localized SAR
(Head & Trunk)
(W/kg)
Localized SAR
(Limb)
(W/kg)
Occupational
100kHz-10MHz 0.4 10 20
10MHz-10GHz 0.4 10 20
General Public
100kHz-10MHz 0.08 2 4
10MHz-10GHz 0.08 2 4

6. 3.RF HUMAN EXPOSURE LIMITS
SAR is refered to Specific Absortion Rate, this is a value
taken in Watts/kg, we can note that there is 2 types of
exposure, for General Public and occupational, the main
difference on this is refered to the antenna exposure zones
relative to distance to the antenna.
Those exposure limits have to be verify ‘In Situ’ using the
proper equipment, there are many brands on market, every
regulatro have to determine the best that suits their budget
and technical specifications.
The next slide shows the Antenna Exposure Zones.
Radio Signals and Health
Regulator’s Perspectives & Public Approach

7. 3.RF HUMAN EXPOSURE LIMITS
Antenna Exposure Zones
Radio Signals and Health
Regulator’s Perspectives & Public Approach
Image Credit: ITU-T k.52 & GSMA Capacity Building

8. 4.MEASUREMENTS PROCEDURES
There is some General Principles:
 Identify appropriate compliance limits
 Determine if RF Exposure Assessment is needed
 Calculations
 Equipment Calibrations (True Field=Measured field x Calibration Factor);
 Measurements (Units, near & far Fields); Before & During Surveys procedures
 Apply mitigations for RF Exposure limits excess
 The next slide present the SAR’s formula and the Human
Absortion Energy depending of Frequency range
Radio Signals and Health
Regulator’s Perspectives & Public Approach

9. 4.MEASUREMENTS PROCEDURES
SAR Calculation Human Absortion Energy-Frequency
Radio Signals and Health
Regulator’s Perspectives & Public Approach
Images Credit: GSMA Capacity Building

10. 5.TRAINING FOR PERSONNEL
Once the Regulatory body has established the rule/standard
for RF exposure limits and adquired the proper equipment,
the personnel whos is going to conduct the measurements
needs to be trained, in order to get familiarized with
equipment calibration, operation, before & during surveys
procedures.
Radio Signals and Health
Regulator’s Perspectives & Public Approach

11. 5.TRAINING FOR PERSONNEL
The measurement team has to be aware of the
Environmental Radio Signal, and also about the before &
during surveys procedures.
Radio Signals and Health
Regulator’s Perspectives & Public Approach
Before Survey (Equipment Set) During Survey
(Measurement at site)
Identify Frquency & Power Observe maximum Exposure Limit !!
Estimate Hazard Zone distances Start in low field & avoid shielding
Chose E, H or both probes Scan over body height (360°) to locate
the peak
Use calibration factor Scan metalic member (Avoid Shielding)
Note other enviromental hazards
Check meter,before & after survey
Image & Table Credit: GSMA Capacity Building

12. 6. PUBLIC OUTREACH/COMMUNICATION
The more access/availability of the results to the public the
better, the regulator has to structure as many channels/ways
to keep public informed.
That information has to include the following:
1. Standard of Exposure limits
2. How was ´adopted´ those exposure limits
3. Equipment used
4. Measurements procedures
5. Compliance determination (yes or not)
6. Technical report
7. Administrative action (if needed)
Radio Signals and Health
Regulator’s Perspectives & Public Approach

13. 6. PUBLIC OUTREACH/COMMUNICATION
It is important to distinguish from an ex-office survey or a
complaint derived survey.
When publishing results, take note on:
1. Target Audience
2. Present reading & value relative to exposure limit
3. Compare power density
4. Estimate the uncertainty
5. Post Pictures, charts, tables, etc.
Radio Signals and Health
Regulator’s Perspectives & Public Approach

14. 6. PUBLIC OUTREACH/COMMUNICATION
When speaking directly to the public, follow this rules:
1. Chose words carefully, use simple language in short
timings
2. Use three key messages
3. Garantee compliance
4. Show good appearance
5. Emphatise & listen to people
6. Avoid larger groups
Radio Signals and Health
Regulator’s Perspectives & Public Approach

15. 7. REFERENCE
GSMA Capacity Building
https://www.gsmatraining.com/
International telecommunication Union, ITU-R
https://www.itu.int/rec/T-REC-K.52/es
https://www.itu.int/rec/T-REC-K.70
World Health Organization, WHO
https://www.who.int/en/news-room/fact-sheets/detail/electromagnetic-fields-and-public-health-mobile-phones
InternationaAgency for Research on Cancer, IARC
http://publications.iarc.fr/Book-And-Report-Series/Iarc-Monographs-On-The-Identification-Of-
Carcinogenic-Hazards-To-Humans/Non-ionizing-Radiation-Part-2-Radiofrequency-Electromagnetic-Fields-2013
International Commission on Non Ionizing Radiation Protection, ICNIRP
https://www.icnirp.org/cms/upload/publications/ICNIRPStatementEMF.pdf
Electron Magnetic Field- Portal, EMF-Portal
https://www.emf-portal.org/en/article/overview/mobile-communications-med-bio#level-1
Radio Signals and Health
Regulator’s Perspectives & Public Approach