RF exposure-MPE

FCC ID: SBVRM002

RF Exposure Info

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FCCID_1217375

Sonos Inc. Report No. 09PRO022 FCC ID: SBVRM002 Model: WMP-N06 LIMITS From §1.1310 Table 1 (B), S = 1.0 mW/cm^2 RESULTS No non-compliance noted: WEMBLEY ANTENNA MPE CALCULATIONS Legacy 802.11g Mode Power Density Output Antenna S, mW/cm2 MPE Limit Power Gain at 20cm Distance (mW/cm^2) (dBm) (dBi) (cm) 1.0 28.80 5.88 0.62 15.86 HT20 MIMO Mode Power Density Output Antenna S, mW/cm2 MPE Limit Power Gain at 20cm Distance (mW/cm^2) (dBm) (dBi) (cm) 1.0 28.89 1.99 0.24 9.87 Antenna gains: 0.46 dBi, 1.99 dBi, and 0.79 dBi Maximum Antenna gain, legacy mode = 10log(10 0.46/10 +10 1.99/10+10 0.79/10) = 5.88 dBi NOTE: For mobile or fixed location transmitters, the minimum separation distance is 20 cm, even if calculations indicate that the MPE distance would be less. Page 26of 29

Sonos Inc. Report No. 09PRO022 FCC ID: SBVRM002 Model: WMP-N06 AVALON ANTENNA MPE CALCULATIONS Legacy 802.11g Mode Power Density Output Antenna S, mW/cm2 MPE Limit Power Gain at 20cm Distance (mW/cm^2) (dBm) (dBi) (cm) 1.0 28.80 6.2 0.63 15.86 HT20 MIMO Mode Power Density Output Antenna S, mW/cm2 MPE Limit Power Gain at 20cm Distance (mW/cm^2) (dBm) (dBi) (cm) 1.0 28.89 1.50 0.24 9.27 Antenna gains: 1.0 dBi, 2.26 dBi, and 0.79 dBi Maximum Antenna gain, legacy mode = 10log(10 1.0/10 +10 2.26/10+10 0.79/10) = 6.2 dBi NOTE: For mobile or fixed location transmitters, the minimum separation distance is 20 cm, even if calculations indicate that the MPE distance would be less. Page 27of 29


Document Created: 2009-12-06 14:26:46
Document Modified: 2009-12-06 14:26:46
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