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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