RF Exposure Info

FCC ID: RRK-WUSND12B

RF Exposure Info

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FCCID_1622443

RF EXPOSURE REPORT REPORT NO.: SA110913E01D MODEL NO.: WUS-ND12B FCC ID: RRK-WUSND12B RECEIVED: Sep. 13, 2011 TESTED: Oct. 18, 2011 ISSUED: Jan. 16, 2012 APPLICANT: Alpha Networks Inc. ADDRESS: No.8 Li-shing 7th Rd., Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. ISSUED BY: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory LAB ADDRESS: No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan This test report consists of 6 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced, except in full, without the written approval of our laboratory. The client should not use it to claim product certification, approval or endorsement by any government agency. The test results in the report only apply to the tested sample. Report No.: SA110913E01D 1 Report Format Version 4.0.0 Reference No.:111227E01

TABLE OF CONTENTS RELEASE CONTROL RECORD .................................................................................... 3 1. CERTIFICATION...................................................................................................... 4 2. RF EXPOSURE LIMIT.............................................................................................. 5 3. MPE CALCULATION FORMULA ............................................................................. 5 4. CLASSIFICATION .................................................................................................... 5 5. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER........................... 6 Report No.: SA110913E01D 2 Report Format Version 4.0.0 Reference No.:111227E01

RELEASE CONTROL RECORD ISSUE NO. REASON FOR CHANGE DATE ISSUED SA110913E01D Original release Jan. 16, 2012 Report No.: SA110913E01D 3 Report Format Version 4.0.0 Reference No.:111227E01

1. CERTIFICATION PRODUCT: 802.11a/b/g/n WIFI Dongle BRAND NAME: Alpha MODEL NO.: WUS-ND12B TEST SAMPLE: MASS-PRODUCTION APPLICANT: Alpha Networks Inc. TESTED DATE: Oct. 18, 2011 STANDARDS: FCC Part 2 (Section 2.1091) FCC OET Bulletin 65, Supplement C (01-01) IEEE C95.1 The above equipment (Model: WUS-ND12B) has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s EMC characteristics under the conditions specified in this report. PREPARED BY : , DATE: Jan. 16, 2012 ( Midoli Peng, Specialist ) APPROVED BY : , DATE: Jan. 16, 2012 ( May Chen, Deputy Manager ) Report No.: SA110913E01D 4 Report Format Version 4.0.0 Reference No.:111227E01

2. RF EXPOSURE LIMIT LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) FREQUENCY ELECTRIC FIELD MAGNETIC FIELD POWER DENSITY AVERAGE TIME RANGE (MHz) STRENGTH (V/m) STRENGTH (A/m) (mW/cm2) (minutes) LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE 300-1500 … … F/1500 30 1500-100,000 … … 1.0 30 F = Frequency in MHz 3. MPE CALCULATION 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 4. CLASSIFICATION This WIFI dongle will be sold and used with TV. So the antenna of this product, under normal use condition, is at least 20cm away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance with the antenna should be included in users manual. So, this device is classified as Mobile Device. The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. So, this device is classified as Mobile Device. Report No.: SA110913E01D 5 Report Format Version 4.0.0 Reference No.:111227E01

5. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER For WLAN: 15.247(2.4GHz) FREQUENCY CONDUCTED ANTENNA POWER DISTANCE LIMIT BAND POWER GAIN DENSITY (cm) (mW/cm2) (MHz) (mW) (dBi) (mW/ cm2) 2412 - 2462 709.8 1.39 20 0.195 1.00 For WLAN: 15.247(5GHz) FREQUENCY CONDUCTED ANTENNA POWER DISTANCE LIMIT BAND POWER GAIN DENSITY (cm) (mW/cm2) (MHz) (mW) (dBi) (mW/ cm2) 5745 - 5825 486.1 2.87 20 0.187 1.00 802.11n (40MHz): 120.1mW For WLAN: 15.407(5GHz) FREQUENCY CONDUCTED ANTENNA POWER DISTANCE LIMIT BAND POWER GAIN DENSITY (cm) (mW/cm2) (MHz) (mW) (dBi) (mW/ cm2) 5180 -5240, 5260 - 5320, 120.1 2.87 20 0.047 1.00 5500 - 5580 & 5660 - 5700 --- END --- CONCLUSION: Both of the WLAN(5GHz band) and Bluetooth can transmit simultaneously, the formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst-case situation is 0.074 / 1 + 0.003 / 1= 0.077, which is less than “1”. This confirmed that the device comply with FCC 1.1310 MPE limit. Report No.: SA110913E01D 6 Report Format Version 4.0.0 Reference No.:111227E01


Document Created: 2012-01-17 08:20:25
Document Modified: 2012-01-17 08:20:25
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