MPE Calculation

FCC ID: SBVZP001

Attestation Statements

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FCCID_573967

                                                                                Sheet1



Sonos Inc.

FCC ID: SBVZP001

802.11g music distribution system                                                        Calculate mW/cm2 here. Enter frequency in MHz:

RF Hazard Distance Calculation                                                           Calculation of Limits from 1.1310 Table 1
                                                                                                                                          Controlled       Uncontrolled
                                                                                                                                          Ave 6 min        Ave 30 min
mW/cm2 from Table1:              1.00      (E: 61 V/m)                                        F(MHz)         Actual F, MHz                 Occ, mW/c2      Gen, mW/cm2
                                                                                               0.3-3              0.5                         100.0            100.0
Max RF Power TX Antenna     MPE distance   S, mW/cm@       Comment                          3.0 - 30.0            5                           180.0            36.0
P, dBm       G, dBi         cm             at 20 cm                                          30.0-300             55                           1.0              0.2
                                                                                            300-1500             555                           1.9             0.37
    19.6            1.3          3.1            0.02       bg cardbus                      1500-100000           5555                           5.0             1.0
                                                           bg module
                                                           BBGW

                                                                                         Enter P(mW)        Equivalent dBm Enter dBm      Equivalent Watts




Basis of Calculations:                                                                   64                 18.1             18.1                   64.6

E^2/3770 = S, mW/cm2
E, V/m = (Pwatts*Ggain*30)^.5/d, meters
d = ((Pwatts*G*30)/3770*S))^0.5              Pwatts*Ggain = 10^(PdBm-30+GdBi)/10)
S@20cm = 20 log (MPE dist/20cm)
NOTE: For mobile or fixed location transmitters, minimum separation distance is for FCC compliance is 20 cm,
          even if calculations indicate MPE distance is less




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Document Created: 2005-08-20 15:39:58
Document Modified: 2005-08-20 15:39:58

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