RF Exposure Information

FCC ID: KEAXDLM

RF Exposure Info

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FCCID_1652805

Trimble Navigation Limited                                                                      FCC ID: KEAXDLM

4     FCC §2.1091 - RF Exposure Information
4.1    Applicable Standards
FCC §2.1091, (a) Requirements of this section are a consequence of Commission responsibilities under the
National Environmental Policy Act to evaluate the environmental significance of its actions. See subpart I
of part 1 of this chapter, in particular §1.1307(b).

                                                  Limits for Exposure

                               Electric Field       Magnetic Field                                Averaging
      Frequency Range                                                      Power Density
                                 Strength             Strength                                      Time
           (MHz)                                                             (mW/cm2)
                                   (V/m)               (A/m)                                      (minutes)
                                (A) Limits for Occupational/Controlled Exposures
            0.3-3.0                 614                   1.63                 *(100)                    6
                                                                                        2
             3.0-30                1842/f                4.89/f               *(900/f )                  6
            30-300                  61.4                 0.163                   1.0                     6
           300-1500                   /                     /                   f/300                    6
         1500-100,000                 /                     /                     1                      6
                            (B) Limits for General Population/Uncontrolled Exposure
           0.3-1.34                 614                   1.63                 *(100)                 30
                                                                                        2
           1.34-30                 842/f                 2.19/f               *(180/f )               30
            30-300                  27.5                 0.073                   0.2                  30
           300-1500                   /                     /                  f/1500                 30
        1500-100,000                  /                     /                     1                   30

        f = frequency in MHz
      * = Plane-wave equivalent power density


MPE Prediction
Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01

                                                  S = PG/4πR²
Where: S = power density
       P = power input to antenna
       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

403-430 MHz
                           Maximum peak output power at antenna input terminal (dBm):           33.06
                           Maximum peak output power at antenna input terminal (mW):            2023
                                                                 Prediction distance (cm):      45
                                                             Prediction frequency (MHz):        429.95
                                                  Maximum Antenna Gain, typical (dBi):          5
                                                     Maximum Antenna Gain (numeric):            3.16
                               Power density of prediction frequency at 45 cm (mW/cm2):         0.2514
                  MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):         0.2866


Report Number: R1105254-90                           Page 11 of 57                           FCC Part 90 Test Report


Trimble Navigation Limited                                                                   FCC ID: KEAXDLM


430-473 MHz
                         Maximum peak output power at antenna input terminal (dBm):          32.94
                         Maximum peak output power at antenna input terminal (mW):           1967.886
                                                               Prediction distance (cm):     45
                                                           Prediction frequency (MHz):       459.075
                                                Maximum Antenna Gain, typical (dBi):         5
                                                   Maximum Antenna Gain (numeric):           3.16
                             Power density of prediction frequency at 45 cm (mW/cm2):        0.2445
                MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):        0.30605

Conclusion

The device complies with the MPE requirements by providing a safe separation distance of at least 45
cm between the antenna with maximum 5.0 dBi gain, including any radiating structure, and any
persons when normally operated.




Report Number: R1105254-90                        Page 12 of 57                            FCC Part 90 Test Report



Document Created: 2012-03-09 14:11:06
Document Modified: 2012-03-09 14:11:06

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