MPE

FCC ID: NUK-VTX201

RF Exposure Info

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FCCID_3408486

Report No. 1730061R-RF-US-Exp RF Exposure Evaluation declaration Product Name ： V2X DSRC Module Trade Name ： Unex Model No. ： VTX-201, VTX-201E, VTX-201U, VTX-201J, VTX-201W FCC ID. ： NUK-VTX201 Applicant : Unex Technology Corporation Address : 11F-3, No. 100, Sec. 1, Jiafeng 11th Rd., Zhubei City, Hsinchu County 30273, Taiwan, R.O.C. Date of Receipt : Mar. 03, 2017 Date of Declaration : Mar. 17, 2017 Report No. : 1730061R-RF-US-Exp Report Version : V1.0 The test results relate only to the samples tested. The test report shall not be reproduced except in full without the written approval of DEKRA Testing and Certification Co., Ltd.. Page: 1 of 4

Report No. 1730061R-RF-US-Exp 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 (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (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 4

Report No. 1730061R-RF-US-Exp 1.3. Test Result of RF Exposure Evaluation Product V2X DSRC Module Test Mode Mode 1: Transmit-ANT1 Test Condition RF Exposure Evaluation Antenna Gain Antenna Gain: The maximum Gain measured in fully anechoic chamber is 7.6dBi or 5.75 in linear scale. Output Power into Antenna & RF Exposure Evaluation Distance: IEEE 802.11p (ANT 1) WLAN Function Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 172 5860 101.8591 0.11652 178 5890 89.7429 0.10266 184 5920 95.4993 0.10924 The power density Pd (4th column) at a distance of 20 cm calculated from the Friis transmission formula is far below the limit of 1 mW/cm2. Page: 3 of 4

Report No. 1730061R-RF-US-Exp Product V2X DSRC Module Test Mode Mode 2: Transmit-ANT2 Test Condition RF Exposure Evaluation Antenna Gain Antenna Gain: The maximum Gain measured in fully anechoic chamber is 7.6dBi or 5.75 in linear scale. Output Power into Antenna & RF Exposure Evaluation Distance: IEEE 802.11p (ANT 2) WLAN Function Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 172 5860 124.7384 0.14269 178 5890 117.7606 0.13471 184 5920 100.6932 0.11519 The power density Pd (4th column) at a distance of 20 cm calculated from the Friis transmission formula is far below the limit of 1 mW/cm2. Page: 4 of 4


Document Created: 2017-04-17 19:03:10
Document Modified: 2017-04-17 19:03:10
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