RF Exposure Report

FCC ID: 2AD9E-MM50

RF Exposure Info

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FCCID_3770048

FCC ID: 2AD9E-MM50 FCC 47 CFR MPE REPORT JL Audio, Inc. Marine Audio Controller Model Number: MM50 FCC ID: 2AD9E-MM50 Prepared for: JL Audio, Inc. 10369 North Commerce Pkwy Miramar, Florida 33025, United States Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R1712116 Date of Test: Dec. 11~23, 2017 Date of Report: Dec. 26, 2017 EST Technology Co. ,Ltd Report No. ESTE-R1712116 Page 1 of 4

FCC ID: 2AD9E-MM50 Maximum Permissible Exposure 1、Applicable Standard Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2m normally can be maintained between the user and the device. (a)、Limits for Occupational / Controlled Exposure Frequency Electric Field Magnetic Power Averaging Range (MHz) Strength E) Field Strength Density (S) Times︱E︱ (V/m) (H) (A/m) (mW/cm2) 2 , ︱H︱2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-10000 5 6 (b)、Limits for General Population / Uncontrolled Exposure Frequency Electric Field Magnetic Power Averaging Range (MHz) Strength E) Field Strength Density (S) Times︱E︱ (V/m) (H) (A/m) (mW/cm2) 2 , ︱H︱2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-10000 1.o 30 Note: f=frequency in MHz; *Plane-wave equivalent power density 2、MPE Calculation Method E (V/m) = (30*P*G) 0.5/d Power Density: Pd (W/m2) = E2/377 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = (30*P*G) / (377*d2) From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained EST Technology Co. ,Ltd Report No. ESTE-R1712116 Page 2 of 4

FCC ID: 2AD9E-MM50 3、Conducted Power Result Target Antenna gain Frequency Peak output power Peak output power Mode power (MHz) (dBm) (mW) (dBi) (Linear) （dBm） 2402 3.730 2.360 3±1 2 1.585 GFSK 2441 3.430 2.203 3±1 2 1.585 2480 3.326 2.151 3±1 2 1.585 2402 2.947 1.971 2±1 2 1.585 8-DPSK 2441 2.580 1.811 2±1 2 1.585 2480 2.259 1.682 2±1 2 1.585 EST Technology Co. ,Ltd Report No. ESTE-R1712116 Page 3 of 4

FCC ID: 2AD9E-MM50 4、Calculated Result and Limit Antenna gain Limited Power of Target Density Power Test Mode power (S) Density (dBi) (Linear) Result （dBm） (mW (S) /cm2) (mW /cm2) GFSK 4 2 1.585 0.00079 1 Compiles 8-DPSK 3 2 1.585 0.00063 1 Compiles EST Technology Co. ,Ltd Report No. ESTE-R1712116 Page 4 of 4


Document Created: 2018-03-01 14:07:08
Document Modified: 2018-03-01 14:07:08
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