RF Exposure Information

FCC ID: BRWQSTLMRX2

RF Exposure Info

Download: PDF
FCCID_4372675

MRT Technology (Suzhou) Co., Ltd Report No.: 1907RSU011-U2 Phone: +86-512-66308358 Report Version: V01 Web: www.mrt-cert.com Issue Date: 07-16-2019 RF Exposure Evaluation Declaration FCC ID: BRWQSTLMRX2 IC: 6157A-QSTMRX2 APPLICANT: Horizon Hobby, LLC Application Type: Certification Product: Quad Serial Telemetry Receiver Model No.: SPM4651T Brand Name: Spektrum FCC Classification: Digital Transmission System (DTS) Test Procedure(s): KDB 447498 D01v06 Test Date: July 04 ~ 10, 2019 Reviewed By: ( Sunny Sun ) Approved By: ( Robin Wu ) The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. FCC ID: BRWQSTLMRX2 Page Number: 1 of 7 IC: 6157A-QSTMRX2

Report No.: 1907RSU011-U2 Revision History Report No. Version Description Issue Date Note 1907RSU011-U2 Rev. 01 Initial Report 07-16-2019 Valid FCC ID: BRWQSTLMRX2 Page Number: 2 of 7 IC ID: 6157A-QSTMRX2

Report No.: 1907RSU011-U2 §2.1033 General Information Applicant: Horizon Hobby, LLC Applicant Address: 2904 Research Rd. Champaign, IL 61822 Manufacturer: Horizon Hobby, LLC Manufacturer Address: 2904 Research Rd. Champaign, IL 61822 Test Site: MRT Technology (Suzhou) Co., Ltd Test Site Address: D8 Building, No.2 Tian’edang Rd., Wuzhong Economic Development Zone, Suzhou, China Test Facility / Accreditations Measurements were performed at MRT Laboratory located in Tian’edang Rd., Suzhou, China.  MRT facility is a FCC registered (MRT Reg. No. 893164) test facility with the site description report on file and has met all the requirements specified in ANSI C63.4-2014.  MRT facility is an IC registered (MRT Reg. No. 11384A-1) test laboratory with the site description on file at Industry Canada.  MRT facility is a VCCI registered (R-20025, G-20034, C-20020, T-20020) test laboratory with the site description on file at VCCI Council.  MRT Lab is accredited to ISO 17025 by the American Association for Laboratory Accreditation (A2LA) under the American Association for Laboratory Accreditation Program (A2LA Cert. No. 3628.01) in EMC, Telecommunications, Radio and SAR testing. FCC ID: BRWQSTLMRX2 Page Number: 3 of 7 IC ID: 6157A-QSTMRX2

Report No.: 1907RSU011-U2 1. PRODUCT INFORMATION 1.1. Feature of Equipment under Test Product Name: Quad Serial Telemetry Receiver Model No.: SPM4651T Brand Name: Spektrum Frequency Range: 2402 ~ 2478 MHz Type of Modulation: GFSK Channel Number: 23 Antenna Information: 2Tx & 2Rx, SISO Mode Only Monopole Antenna, 2dBi 1.2. Working Frequencies Channel Frequency Channel Frequency 01 2402 MHz 02 2405 MHz 03 2409 MHz 04 2412 MHz 05 2415 MHz 06 2418 MHz 07 2422 MHz 08 2425 MHz 09 2428 MHz 10 2431 MHz 11 2435 MHz 12 2438 MHz 13 2440 MHz 14 2444 MHz 15 2448 MHz 16 2451 MHz 17 2454 MHz 18 2457 MHz 19 2461 MHz 20 2464 MHz 21 2467 MHz 22 2471 MHz 23 2478 MHz --- --- Note: The engineer test sample was provided by the manufacturer, it was configured into fixed frequency transmitter status after power on. FCC ID: BRWQSTLMRX2 Page Number: 4 of 7 IC ID: 6157A-QSTMRX2

Report No.: 1907RSU011-U2 2. RF Exposure Evaluation 2.1. 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 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 Pd is the limit of MPE, 1mW/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. FCC ID: BRWQSTLMRX2 Page Number: 5 of 7 IC ID: 6157A-QSTMRX2

Report No.: 1907RSU011-U2 2.2. Test Result of RF Exposure Evaluation Product Quad Serial Telemetry Receiver Test Item RF Exposure Evaluation Test Mode Frequency Band Maximum EIRP Power Density at Limit (MHz) (dBm) R = 20 cm (mW/cm2) (mW/cm2) GFSK 2402 ~ 2478 26.60 0.0909 1 Note: EIRP (dBm) = Conducted Power(dBm) + Peak Gain (dBi) CONCLUSION: The max Power Density at R (20 cm) = 0.0909mW/cm2 < 1 mW/cm2 for 2.4G Radio Frequency. The End FCC ID: BRWQSTLMRX2 Page Number: 6 of 7 IC ID: 6157A-QSTMRX2

Report No.: 1907RSU011-U2 Appendix A - EUT Photograph Refer to “1907RSU011-UE” file. FCC ID: BRWQSTLMRX2 Page Number: 7 of 7 IC ID: 6157A-QSTMRX2


Document Created: 2019-07-25 15:53:56
Document Modified: 2019-07-25 15:53:56
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC