RF Exposure

FCC ID: RI7LE910C1SV

RF Exposure Info

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FCCID_4161940

DEKRA Testing and Certification S.A.U.TCB
Parque Tecnológico de Andalucía
Severo Ochoa, 2 & 6
29590 Málaga
Spain

Date: November 13th, 2018
Report: 58303_LE910C1-SV

                  RF exposure analysis for the equipment – Maximum Antenna Gain

Model: LE910C1-SV                      FCC ID: RI7LE910C1SV                                IC: 5131A-LE910C1SV

The device Telit LE910C1-SV is a module designed to be installed in other devices. This device is to be used
only for fixed and mobile applications. If the final product after integration is intended for portable use, new
applications and FCC and IC are required.

The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm
from all the persons and must not be co-located or operating in conjunction with any other antenna or
transmitter except as under the conditions described KDB 447498 D01 General RF Exposure Guidance.


MPE exposure limits

The table below is excerpted from Table 1B of 47 CFR 1.1310 titled Limits for Maximum Permissible Exposure
(MPE), Limits for General Population/Uncontrolled Exposure:

          Frequency Range (MHz)                     Power density (mW/cm2)                    Averaging time (minutes)
                   300 – 1500                               f (MHz) /1500                                        30
                 1500 – 100.000                                    1,0                                           30

The table below is excerpted from RSS-102, Issue 5, 4, titled “Table 4: RF Field Strength Limits for Devices
Used by the General Public”:

          Frequency Range (MHz)                       Power density (W/m2)                    Averaging time (minutes)
                   300 – 6000                               0.02619·f 0.6834                                     6


EIRP limits

                                        Maximum
                      Frequency
                                       conducted           FCC MPE           IC MPE          FCC/IC              FCC EIRP    IC EIRP
                         (MHz)
      Band                            output power           limit             limit        MPE limit              limit       limit
                        (Lowest
                                      (per tune-up)        (mW/cm2)         (mW/cm2)        (mW/cm2)                (W)         (W)
                      Frequency)
                                         (dBm)
     FDD 13              777,0             24,50              0,518            0,247          0,24743                 4,92    5,00
      FDD 4             1710,0             24,00              1,000            0,424          0,42419                 1,00    1,00



                               PG
Using the equation     S              to calculate the exposure to electromagnetic fields
                             4R 2
        where:    S = power density (in appropriate units, e.g. mW/cm 2)
                  P = power input to the antenna (in appropriate units, e.g., mW)
                  G = power gain of the antenna in the direction of interest relative to an isotropic radiator
                  R = distance to the center of radiation of the antenna (appropriate units, e.g., cm)


The maximum antenna gain that can be used in the LE910C1-SV is shown in the following table:

                               Maximum                                                                                          Evaluation                                                      Maximun
                Frequency                                                                                                                    Antenna gain to Antenna gain to Antenna gain to
                              conducted                  FCC MPE                     FCC/IC MPE                                distance for                                                  antenna gain to
                   (MHz)                   Duty cicle                 IC MPE limit              FCC EIRP limit IC EIRP limit                  meet FCC/IC meet FCC EIRP meet IC EIRP
       Band                  output power                  limit                        limit                                compliance with                                                   meet all the
                 (Low est                     (%)                2     (mW/cm2)               2      (W)            (W)                         MPE limit         limit           limit
                             (per tune-up)              (mW/cm )                      (mW/cm )                                  MPE limits                                                       limits
                Frequency)                                                                                                                        (dBi)           (dBi)           (dBi)
                                (dBm)                                                                                              (cm)                                                           (dBi)

       FDD 13     777,0         24,50        100,0%       0,518          0,247        0,24743         4,92          5,00             20                6,44         12,41         12,48           6,44
       FDD 4     1710,0         24,00        100,0%       1,000          0,424        0,42419         1,00          1,00             20                9,28         6,00           6,00           6,00



And according to these maximum antenna gains calculated, the spectral power density for each band is
shown in the table below:

                               Maximum                                                                                                                     Evaluation
                  Frequency
                              conducted                              Antenna     FCC/IC MPE                                                 FCC/IC        distance for            PG
        Band
                     (MHz)
                             output power
                                           Duty cicle
                                                                       gain         limit
                                                                                            FCC EIRP limit           IC EIRP limit
                                                                                                                                          EIRP limit      compliance
                                                                                                                                                                           S                 MPE Ratio
                   (Low est
                             (per tune-up)
                                              (%)
                                                                      (dBi)       (mW/cm )2      (W)                      (W)
                                                                                                                                             (W)            with MPE             4R 2       (S/MPE limit)
                  Frequency)
                                (dBm)                                                                                                                      limits (cm)
       FDD 13       777,0            24,50            100,0%          6,44           0,24743           4,92                5,00             4,92              20             0,24702           0,99835
       FDD 4        1710,0           24,00            100,0%          6,00           0,42419           1,00                1,00             1,00              20             0,19894           0,46899


According to the tables above, the maximum gain allowed to be compliant to the Normative Document is 6.44
dBi for the 700 MHz band and 6.00 dBi for 1700 MHz band, based on a 20 cm distance between antenna and
human body.

Yours sincerely,
P.A.




_______________________________
By:     Ken Bednasz
Title: VP Application Engineer
Company: Telit Communications S.p.A.
Telephone: 1-919-415-1517
e-mail: Ken.Bednasz@telit.com



Document Created: 2018-11-15 10:07:21
Document Modified: 2018-11-15 10:07:21

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