MPE Estimation

FCC ID: I4L-MS6833

RF Exposure Info

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FCCID_486511

Report No. 049L072FI RF Exposure Evaluation declaration Product Name : Mini PCI Card Model No. : MS-6833 FCC ID : I4L-MS6833 Applicant : MICRO-STAR INT’L Co., LTD Address : No 69, Li-De st., Jung-He City, Taipei Hsien, Taiwan, R.O.C Date of Receipt : Sep. 08. 2004 Date of Declaration : Sep. 13. 2004 Report No. : 049L072FI The declaration results relate only to the samples calculated. The declaration shall not be reproduced except in full without the written approval of QuieTek Corporation. This report must not be used to claim product endorsement by NVLAP any agency of the U.S. Government Page: 1 of 5 Version: 1.0

Report No. 049L072FI 1. RF Exposure Evaluation 1.1. Limits According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range Electric Field Magnetic Field Power Density Average Time 2 (MHz) Strength (V/m) Strength (A/m) (mW/cm ) (Minutes) (A) Limits for Occupational/ Control Exposures 300-1500 -- -- F/300 6 1500-100,000 -- -- 5 6 (B) Limits for General Population/ Uncontrolled Exposures 300-1500 -- -- F/1500 6 1500-100,000 -- -- 1 30 F= Frequency in MHz Friis Formula Friis transmission formula: Pd = (Pout*G)/(4*pi*r2) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. 1.2. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. The temperature and related humidity: 18℃and 78％ RH. Page: 2 of 5 Version: 1.0

Report No. 049L072FI 1.3. Test Result of RF Exposure Evaluation Product : Mini PCI Card Test Item : RF Exposure Evaluation Test Site : No.3 OATS (802.11b FAVORTRON, 223IIO Antenna) Output Power Into Antenna & RF Exposure Evaluation Distance (1.97 dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 19.2309 0.0060 6 2437.00 18.8365 0.0059 11 2462.00 21.5278 0.0067 (802.11g FAVORTRON, 223IIO Antenna) Output Power Into Antenna & RF Exposure Evaluation Distance (1.97 dBi): Output Power to Antenna Power Density at R =20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 21.3304 0.0067 6 2437.00 19.4536 0.0061 11 2462.00 21.8273 0.0068 Page: 3 of 5 Version: 1.0

Report No. 049L072FI (802.11b FOXCONN, N245 Antenna) Output Power Into Antenna & RF Exposure Evaluation Distance (0.99 dBi): Output Power to Antenna Power Density at R =20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 19.2309 0.0048 6 2437.00 18.8365 0.0047 11 2462.00 21.5278 0.0054 (802.11g FOXCONN, N245 Antenna) Output Power Into Antenna & RF Exposure Evaluation Distance (0.99 dBi): Output Power to Antenna Power Density at R =20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 21.3304 0.0053 6 2437.00 19.4536 0.0049 11 2462.00 21.8273 0.0055 Page: 4 of 5 Version: 1.0

Report No. 049L072FI (802.11b FAVORTRON, 255 Series/ 259 Series Antenna) Output Power Into Antenna & RF Exposure Evaluation Distance (1.61 dBi -259 Series): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 19.2309 0.0055 6 2437.00 18.8365 0.0054 11 2462.00 21.5278 0.0062 (802.11g FAVORTRON, 255 Series/ 259 Series Antenna) Output Power Into Antenna & RF Exposure Evaluation Distance (1.61 dBi -259 Series): Output Power to Antenna Power Density at R =20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 21.3304 0.0061 6 2437.00 19.4536 0.0056 11 2462.00 21.8273 0.0063 The distance r (4th column) calculated from the Fries transmission formula is far shorter than 20 cm separation requirement. Page: 5 of 5 Version: 1.0


Document Created: 2004-11-01 17:03:00
Document Modified: 2004-11-01 17:03:00
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