Jenmart Industrial (HK) Co., Limited SB3706 2A38HSB3706 2A38HSB3706 sb3706
RF TEST REPORT Product Name: Personal CD/MP3 Player with FM PLL Radio Model Name: SB3706, SB3706MW, SB3706BP, SB3706BW, SB3706RW, SB3706XXXXX (Where XXXXX denote any printable characters in the ASCII Standard Character Table to represent variances in cosmetics or buyers) FCC ID: 2A38HSB3706 Issued For : Jenmart Industrial (HK) Co., Limited Units A&B, 15/F, Neich Tower, 128 Gloucester Road, Wanchai, Hong Kong Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT24G134RF02 Sample Received Date: Jul. 18, 2024 Date of Test: Jul. 18, 2024 Aug. 20, 2024 Date of Issue: Aug. 20, 2024 The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:lgt@lgt-cert.com Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Applicant: Address: Manufacturer: Address: Product Name: Trademark: Model Name: Sample Status: TEST REPORT CERTIFICATION Jenmart Industrial (HK) Co., Limited Units A&B, 15/F, Neich Tower, 128 Gloucester Road, Wanchai, Hong Kong Dongguan City Wangniudun Yinghui Electronics Factory Chijiaoluduan Zhenzhong Road, Wangniudun Town, Dongguan City, China Personal CD/MP3 Player with FM PLL Radio Studebaker BRAND SB3706, SB3706MW, SB3706BP, SB3706BW, SB3706RW, SB3706XXXXX (Where XXXXX denote any printable characters in the ASCII Standard Character Table to represent variances in cosmetics or buyers) Normal APPLICABLE STANDARDS STANDARD FCC Part 15.239, Subpart C ANSI C63.10-2013 TEST RESULTS PASS Prepared by: Zane Shan Engineer Approved by: Vita Li Technical Director Report No.: LGT24G134RF02 Page 2 of 32 Table of Contents Page 1. SUMMARY OF TEST RESULTS 5 1.1 TEST FACTORY 6 1.2 MEASUREMENT UNCERTAINTY 6 2. GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF THE EUT 7 2.2 DESCRIPTION OF THE TEST MODES 8 2.3 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 9 2.6 EQUIPMENTS LIST 10 3. EMC EMISSION TEST 11 3.1 CONDUCTED EMISSION MEASUREMENT 11 3.2 RADIATED EMISSION MEASUREMENT 15 3.3 FIELD STRENGTH EMISSION 24 3.3.1 REQUIREMENT 24 3.3.2 TEST SETUP 24 3.3.3 EUT OPERATION CONDITIONS 24 3.3.4 TEST RESULTS 25 4. BANDWIDTH TEST 26 4.4 EUT OPERATION CONDITIONS 27 4.5 TEST RESULTS 28 5. ANTENNA REQUIREMENT 30 5.1 STANDARD REQUIREMENT 30 5.2 EUT ANTENNA 30 APPENDIX II - MEASUREMENT PHOTOS 31 APPENDIX III - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS 32 Report No.: LGT24G134RF02 Page 3 of 32 Revision History Rev. Issue Date Revisions 00 Aug. 20, 2024 Initial Issue Report No.: LGT24G134RF02 Page 4 of 32 1. SUMMARY OF TEST RESULTS Standard Section 15.207 15.209 15.239(b) (c) 15.239(b) 15.203 15.239(a) FCC Part 15.239, Subpart C Test Item Conducted Emission Radiated Emission field strength emission Antenna Requirement 20dB Bandwidth Judgment PASS PASS PASS PASS PASS Remark ------ NOTE: (1) `N/A' denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Report No.: LGT24G134RF02 Page 5 of 32 1.1 TEST FACTORY Company Name: Address: Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China A2LA Certificate No.: 6727.01 Accreditation Certificate FCC Registration No.: 746540 CAB ID: CN0136 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item 1 RF output power, conducted 2 Unwanted Emissions, conducted 3 All emissions, radiated 9K-30MHz 4 All emissions, radiated 30M-1GHz 5 All emissions, radiated 1G-6GHz 6 All emissions, radiated>6G 7 Conducted Emission (9KHz-150KHz) 8 Conducted Emission (150KHz-30MHz) Note: The measurement uncertainty is not included in the test result. Uncertainty ±0.68dB ±2.988dB ±2.84dB ±4.39dB ±5.10dB ±5.48dB ±2.79dB ±2.80dB Report No.: LGT24G134RF02 Page 6 of 32 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Personal CD/MP3 Player with FM PLL Radio Trademark: Studebaker BRAND Model Name: Series Model: Model Difference: Operation Frequency: Antenna Type: SB3706 SB3706MW, SB3706BP, SB3706BW, SB3706RW, SB3706XXXXX (Where XXXXX denote any printable characters in the ASCII Standard Character Table to represent variances in cosmetics or buyers) Different customers have different requirements for the name of the corresponding product model. Frequency:88 108 MHz Modulation: FM Integral Antenna Antenna Gain: 0dBi Adapter: Battery: Hardware Version: Input: DC 5V 1A Capacity: 1500mAh Rated Voltage: 3.7V N/A Software Version: N/A Connecting I/O Port(s): Please refer to the Note 1. Note: 1. For a more detailed features description, please refer to the manufacturer's specifications or the User Manual. 2. The antenna information refers to the manufacturer provide report, applicable only to the tested sample identified in the report. Due to the incorrect antenna information, a series of problems such as the accuracy of the test results will be borne by the customer. Report No.: LGT24G134RF02 Page 7 of 32 2.2 DESCRIPTION OF THE TEST MODES To investigate the maximum EMI emission characteristics generates from EUT, the test system was pre-scanning tested base on the consideration of following EUT operation mode or test configuration mode which possible have effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively. Worst Mode Description Remark Mode 1 TX 88.5MHz Mode Low Mode 2 TX 93.7MHz Mode Middle Mode 3 TX 102.9MHz Mode High Note: (1) The measurements are performed at all Bit Rate of Transmitter, the worst data was reported. (2) We tested for all available U.S. voltage and frequencies (For 120V, 50/60Hz and 240V, 50/60Hz) for which the device is capable of operation, and the worst case of 120V/ 60Hz is shown in the report. (3) The battery is fully charged during the radiated and RF conducted test. For AC Conducted Emission Test Case AC Conducted Emission Mode 4: Keeping TX Report No.: LGT24G134RF02 Page 8 of 32 2.3 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Accessories Equipment Description Manufacturer Model S/N Earphone N/A N/A N/A USB-A to USB-C Cable N/A N/A N/A Rating N/A 1m Auxiliary Equipment Description Manufacturer Model S/N Laptop Lenovo HKF-16 N/A Adapter Tenpao S005CAU0500100 N/A Rating N/A Input: 100-240V ~ 50/60Hz 0.2A Output: 5V, 1A Note: (1) For detachable type I/O cable should be specified the length in cm inLengthcolumn. (2) "YES" is means "with core"; "NO" is means "without core". Report No.: LGT24G134RF02 Page 9 of 32 2.6 EQUIPMENTS LIST Conducted Emission Equipment Manufacturer EMI Test Receiver R&S LISN COM-POWER LISN SCHWARZBECK Transient Limiter CYBERTEK Temperature & Humidity KTJ Testing Software Model No. Serial No. ESU8 100372 LI-115 02032 NNLK 8122 00160 EM5010A E2250100049 TA218B N.A EMC-I_V1.4.0.3_SKET Cal. Date 2024.03.09 2024.03.09 2024.03.09 2024.03.09 2024.03.09 Cal. Until 2025.03.08 2025.03.08 2025.03.08 2025.03.08 2025.03.08 Radiated Test equipment Equipment Manufacturer Model No. Serial No. EMI Test Receiver R&S ESU8 100372 Active loop Antenna ETS 6502 00049544 Spectrum Analyzer Keysight N9010B MY60242508 Bilog Antenna(30M-1G) SCHWARZBECK VULB 9168 2705 Horn Antenna(1-18G) SCHWARZBECK 3115 10SL0060 Horn Antenna(18-40G) A-INFO LB-180400-KF J211060273 Pre-amplifier(30M-1G) EMtrace RP01A 02019 Pre-amplifier(1-26.5G) Agilent 8449B 3008A4722 Pre-amplifier(18-40G) com-mw LNPA_18-40-01 18050003 Wireless Communications Test Set R&S CMW 500 137737 Antenna Tower SAEMC BK-4AT-BS-D SK2021093008 Temperature & Humidity JINGCHUANG BT-3 N.A Testing Software EMC-I_V1.4.0.3_SKET Cal. Date 2024.03.09 2023.10.13 2024.08.05 2022.12.12 2022.06.02 2022.06.08 2024.03.09 2024.03.09 2024.03.09 Cal. Until 2025.03.08 2025.10.12 2025.08.04 2025.12.11 2025.06.01 2025.06.07 2025.03.08 2025.03.08 2025.03.08 2024.03.09 2025.03.08 N.A N.A 2024.03.11 2025.03.10 RF Conducted Test equipment Equipment Manufacturer Signal Analyzer Keysight Signal Analyzer Keysight RF Automatic Test system MW MXG Vector Signal Generator Keysight Temperature& Humidity test chamber AISRY Attenuator eastsheep Temperature & Humidity JINGCHUANG Digital multimeter MASTECH Testing Software Model No. Serial No. Cal. Date N9010B MY60242508 2024.08.05 N9020A MY50530994 2024.03.09 MW100-RFCB MW220322LG-033 2024.03.09 N5182B MY59100717 2024.03.09 LX-1000L 171200018 2024.03.09 90db N.A BT-3 N.A MS8261 MBGBC83053 MTS8310_V2.0.0.0_MW 2024.03.09 2024.03.11 2024.03.09 Cal. Until 2025.08.04 2025.03.08 2025.03.08 2025.03.08 2025.03.08 2025.03.08 2025.03.10 2025.03.08 Report No.: LGT24G134RF02 Page 10 of 32 3. EMC EMISSION TEST 3.1 CONDUCTED EMISSION MEASUREMENT 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS The radio frequency voltage that is conducted back onto the AC power line on any frequency or frequencies, within the band 150 kHz to 30 MHz, shall not exceed the limits in the following table. FREQUENCY (MHz) Conducted Emissionlimit (dBuV) Quasi-peak Average 0.15 -0.5 66 - 56 * 56 - 46 * 0.50 -5.0 56.00 46.00 5.0 -30.0 60.00 50.00 Note: (1) The tighter limit applies at the band edges. (2) The limit of " * " marked band means the limitation decreases linearly with the logarithm of the frequency in the range. The following table is the setting of the receiver Receiver Parameters Attenuation Start Frequency Stop Frequency IF Bandwidth Setting 10 dB 0.15 MHz 30 MHz 9 kHz Report No.: LGT24G134RF02 Page 11 of 32 3.1.2 TEST PROCEDURE a. The EUT is 0.8 m from the horizontal ground plane and 0.4 m from the vertical ground plane with EUT being connected to the power mains through a line impedance stabilization network (LISN). All other support equipments are powered from additional LISN(s). The LISN provides 50 Ohm/ 50uH of coupling impedance for the measuring instrument. b. Interconnecting cables that hang closer than 40 cm to the ground plane shall be folded back and forth in the center forming a bundle 30 to 40 cm long. c. I/O cables that are not connected to a peripheral shall be bundled in the center. The end of the cable may be terminated, if required, using the correct terminating impedance. The overall length shall not exceed 1 m. d. LISN is at least 80 cm from the nearest part of EUT chassis. e. For the actual test configuration, please refer to the related Item EUT Test Photos. 3.1.3 TEST SETUP Vertical Reference Ground Plane Test Receiver 40cm EUT LISN 80cm Horizontal Reference Ground Plane Note: 1. Support units were connected to second LISN. 2. Both of LISNs (AMN) are 80 cm from EUT and at least 80 cm from other units and other metal planes support units. 3.1.4 EUT OPERATING CONDITIONS The EUT was configured for testing in a typical fashion (as a customer would normally use it). The EUT has been programmed to continuously transmit during test. This operating condition was tested and used to collect the included data. Report No.: LGT24G134RF02 Page 12 of 32 3.1.5 TEST RESULT Project: LGT24G134 EUT: Personal CD/MP3 Player with FM PLL Radio M/N: SB3706 Test Voltage: AC 120V/60Hz Test Mode: TX Note: Test Engineer: LiuH Temperature: 27.3 Humidity: 55%RH Test Data: 2024-08-08 No. Frequency MHz Reading Factor dBuV dB Level dBuV 1* 0.174 40.33 10.60 50.93 2* 0.550 35.06 10.57 45.63 3* 1.018 30.49 10.70 41.19 4* 1.794 27.28 10.93 38.21 5* 3.494 24.54 11.17 35.71 6* 14.246 35.06 11.33 46.39 7* 0.202 19.64 10.62 30.26 8* 0.570 27.03 10.57 37.60 9* 0.922 20.06 10.66 30.72 10* 1.798 17.01 10.93 27.94 11* 2.902 14.31 11.17 25.48 12* 14.602 19.52 11.36 30.88 Limit dBuV 64.77 56.00 56.00 56.00 56.00 60.00 53.53 46.00 46.00 46.00 46.00 50.00 Margin dB -13.83 -10.37 -14.81 -17.79 -20.29 -13.61 -23.26 -8.40 -15.28 -18.06 -20.52 -19.12 Detector QP QP QP QP QP QP AV AV AV AV AV AV Polar L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 Report No.: LGT24G134RF02 Page 13 of 32 Project: LGT24G134 EUT: Personal CD/MP3 Player with FM PLL Radio M/N: SB3706 Test Voltage: AC 120V/60Hz Test Mode: TX Note: Test Engineer: LiuH Temperature: 27.3 Humidity: 55%RH Test Data: 2024-08-08 No. Frequency MHz Reading Factor dBuV dB Level dBuV 1* 0.174 37.49 10.56 48.05 2* 0.570 32.42 10.55 42.97 3* 0.914 27.13 10.55 37.68 4* 1.530 23.54 10.66 34.20 5* 4.118 20.53 10.82 31.35 6* 14.362 31.07 11.33 42.40 7* 0.186 18.53 10.56 29.09 8* 0.590 24.73 10.55 35.28 9* 0.938 17.50 10.55 28.05 10* 1.790 14.57 10.71 25.28 11* 2.890 11.74 10.78 22.52 12* 17.922 12.74 11.53 24.27 Limit dBuV 64.77 56.00 56.00 56.00 56.00 60.00 54.21 46.00 46.00 46.00 46.00 50.00 Margin dB -16.72 -13.03 -18.32 -21.80 -24.65 -17.60 -25.12 -10.72 -17.95 -20.72 -23.48 -25.73 Detector QP QP QP QP QP QP AV AV AV AV AV AV Polar N N N N N N N N N N N N Report No.: LGT24G134RF02 Page 14 of 32 3.2 RADIATED EMISSION MEASUREMENT 3.2.1 RADIATED EMISSION LIMITS In any 100 kHz bandwidth outside the operating frequency band. In case the emission fall within the Restricted band specified on Part15.205 (a)&209(a) limit in the table and according to ANSI C63.10-2013 below has to be followed. LIMITS OF RADIATED EMISSION MEASUREMENT (0.009MHz - 1000MHz) Frequencies Field Strength Measurement Distance (MHz) (micorvolts/meter) (meters) 0.009~0.490 2400/F(KHz) 300 0.490~1.705 24000/F(KHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 LIMITS OF RADIATED EMISSION MEASUREMENT (1GHz-25 GHz) FREQUENCY (MHz) PEAK (dBuV/m) (at 3M) AVERAGE Above 1000 74 54 Notes: (1) The limit for radiated test was performed according to FCC PART 15C. (2) The tighter limit applies at the band edges. (3) Emission level (dBuV/m)=20log Emission level (uV/m). LIMITS OF RESTRICTED FREQUENCY BANDS FREQUENCY (MHz) 0.090-0.110 0.495-0.505 2.1735-2.1905 4.125-4.128 4.17725-4.17775 4.20725-4.20775 6.215-6.218 6.26775-6.26825 6.31175-6.31225 8.291-8.294 8.362-8.366 8.37625-8.38675 8.41425-8.41475 12.29-12.293 12.51975-12.52025 12.57675-12.57725 13.36-13.41 FREQUENCY (MHz) 16.42-16.423 16.69475-16.69525 16.80425-16.80475 25.5-25.67 37.5-38.25 73-74.6 74.8-75.2 108-121.94 123-138 149.9-150.05 156.52475-156.52525 156.7-156.9 162.0125-167.17 167.72-173.2 240-285 322-335.4 FREQUENCY (MHz) 399.9-410 608-614 960-1240 1300-1427 1435-1626.5 1645.5-1646.5 1660-1710 1718.8-1722.2 2200-2300 2310-2390 2483.5-2500 2690-2900 3260-3267 3332-3339 3345.8-3358 3600-4400 FREQUENCY (GHz) 4.5-5.15 5.35-5.46 7.25-7.75 8.025-8.5 9.0-9.2 9.3-9.5 10.6-12.7 13.25-13.4 14.47-14.5 15.35-16.2 17.7-21.4 22.01-23.12 23.6-24.0 31.2-31.8 36.43-36.5 Above 38.6 Report No.: LGT24G134RF02 Page 15 of 32 For Radiated Emission Spectrum Parameter Attenuation Detector Start Frequency Stop Frequency RB / VB (emission in restricted band) Spectrum Parameter Attenuation Detector Start Frequency Stop Frequency RB / VB (emission in restricted band) Spectrum Parameter Attenuation Detector Start Frequency Stop Frequency RB / VB (emission in restricted band) For Restricted band Spectrum Parameter Detector Start/Stop Frequency RB / VB Receiver Parameter Attenuation Start ~ Stop Frequency Start ~ Stop Frequency Start ~ Stop Frequency Start ~ Stop Frequency Start ~ Stop Frequency Report No.: LGT24G134RF02 Setting Auto Peak/QP/AV 9 KHz/150KHz (Peak/QP/AV) 150KHz/30MHz (Peak/QP/AV) 200Hz (From 9kHz to 0.15MHz)/ 9KHz (From 0.15MHz to 30MHz); 200Hz (From 9kHz to 0.15MHz)/ 9KHz (From 0.15MHz to 30MHz) Setting Auto Peak/QP 30 MHz (Peak/QP) 1000 MHz (Peak/QP) 120 KHz / 300 KHz Setting Auto Peak 1000 MHz (Peak/AV) 10th carrier hamonic (Peak/AV) 1 MHz / 3 MHz(Peak) 1 MHz/1/T MHz(AVG) Setting Peak Lower Band Edge: 2310 to 2410 MHz Upper Band Edge: 2476 to 2500 MHz 1 MHz / 3 MHz(Peak) 1 MHz/1/T MHz(AVG) Setting Auto 9kHz~90kHz / RB 200Hz for PK & AV 90kHz~110kHz / RB 200Hz for QP 110kHz~490kHz / RB 200Hz for PK & AV 490kHz~30MHz / RB 9kHz for QP 30MHz~1000MHz / RB 120kHz for QP Page 16 of 32 3.2.2 TEST PROCEDURE a. The measuring distance at 3 m shall be used for measurements at frequency 0.009MHz up to 1GHz, and above 1GHz. b. The EUT was placed on the top of a rotating table 0.8 m (above 1GHz is 1.5 m) above the ground at a 3 m anechoic chamber test site. The table was rotated 360 degree to determine the position of the highest radiation. c. The height of the equipment shall be 0.8 m (above 1GHz is 1.5 m); the height of the test antenna shall vary between 1 m to 4 m. Horizontal and vertical polarization of the antenna are set to make the measurement. d. The initial step in collecting conducted emission data is a spectrum analyzer peak detector mode pre-scanning the measurement frequency range. Significant peaks are then marked and QuasiPeak detector mode will be re-measured. e. If the Peak Mode measured value is compliance with and lower than Quasi Peak Mode Limit, the EUT shall be deemed to meet QP Limits and no additional QP Mode measurement was performed. f. For the actual test configuration, please refer to the related Item EUT Test Photos. Note: Both horizontal and vertical antenna polarities were tested and performed pretest to three orthogonal axis. The worst case emissions were reported. 3.2.3 DEVIATION FROM TEST STANDARD No deviation. Report No.: LGT24G134RF02 Page 17 of 32 3.2.4 TESTSETUP (A) Radiated Emission Test-Up Frequency Below 30MHz (B) Radiated Emission Test-Up Frequency 30MHz~1GHz (C) Radiated Emission Test-Up Frequency Above 1GHz 3.2.5 EUT OPERATING CONDITIONS Please refer to section 3.1.4 of this report. Report No.: LGT24G134RF02 Page 18 of 32 3.2.6 FIELD STRENGTH CALCULATION The field strength is calculated by adding the Antenna Factor and Cable Factor and subtracting the Amplifier Gain and Duty Cycle Correction Factor (if any) from the measured reading. The basic equation with a sample calculation is as follows: FS = RA + AF + CL - AG Where FS = Field Strength CL = Cable Attenuation Factor (Cable Loss) RA = Reading Amplitude AG = Amplifier Gain AF = Antenna Factor For example Frequency FS RA AF CL AG Factor (MHz) (dBV/m) (dBV/m) (dB) (dB) (dB) (dB) 300 40 Factor=AF+CL-AG 58.1 12.2 1.6 31.9 -18.1 Report No.: LGT24G134RF02 Page 19 of 32 3.2.7 TEST RESULTS Results of Radiated Emissions (9 KHz~30MHz) No. Frequency Reading Factor Level Limit dBuV dB/m dBuV/m dBuV/m 1* - - - - - Margin dB - Detector Remark - See Note Note: The emission from 9 kHz to 30MHz was pre-tested and found the result was 20dB lower than the limit, and the permissible value has no need to be reported. Distance extrapolation factor = 40 log (specific distance / test distance) (dB); Limit line = specific limits (dBuV) + distance extrapolation factor. Report No.: LGT24G134RF02 Page 20 of 32 Results of Radiated Emissions (30MHz~1000MHz) Project: LGT24G134 EUT: Personal CD/MP3 Player with FM PLL Radio M/N: SB3706 Test Voltage: Battery DC 3.7V Test Mode: TX Low Chennal Note: Test Engineer: LiuH Temperature: 24 Humidity: 50%RH Test Data: 2024-08-20 No. Frequency MHz Reading Factor Level dBuV dB/m dBuV/m Limit dBuV/m Margin dB Detector Polar 1* 52.916 3.56 20.66 24.22 40.00 -15.78 PK Hor 2* 157.919 4.23 21.65 25.88 43.50 -17.62 PK Hor 3* 265.468 15.61 19.90 35.51 46.00 -10.49 PK Hor 4* 325.123 10.00 22.11 32.11 46.00 -13.89 PK Hor 5* 687.539 6.52 30.09 36.61 46.00 -9.39 PK Hor 6* 986.056 4.74 34.16 38.90 54.00 -15.10 PK Hor No. Frequency MHz Reading Factor Level dBuV dB/m dBuV/m Limit dBuV/m Margin dB Detector Polar 1* 42.004 4.03 20.50 24.53 40.00 -15.47 PK Ver 2* 176.955 7.56 19.42 26.98 43.50 -16.52 PK Ver 3* 265.468 9.41 19.90 29.31 46.00 -16.69 PK Ver 4* 454.496 5.01 25.75 30.76 46.00 -15.24 PK Ver 5* 687.539 7.63 30.09 37.72 46.00 -8.28 PK Ver 6* 977.690 5.11 33.81 38.92 54.00 -15.08 PK Ver Report No.: LGT24G134RF02 Page 21 of 32 Project: LGT24G134 EUT: Personal CD/MP3 Player with FM PLL Radio M/N: SB3706 Test Voltage: Battery DC 3.7V Test Mode: TX Middle Chennal Note: Test Engineer: LiuH Temperature: 24 Humidity: 50%RH Test Data: 2024-08-20 No. Frequency MHz Reading Factor Level dBuV dB/m dBuV/m Limit dBuV/m Margin dB Detector Polar 1* 187.383 11.77 18.47 30.24 43.50 -13.26 PK Hor 2* 239.884 8.74 18.79 27.53 46.00 -18.47 PK Hor 3* 281.109 13.45 20.92 34.37 46.00 -11.63 PK Hor 4* 325.123 10.90 22.11 33.01 46.00 -12.99 PK Hor 5* 374.835 7.87 23.76 31.63 46.00 -14.37 PK Hor 6* 994.301 4.68 33.77 38.45 54.00 -15.55 PK Hor No. Frequency MHz Reading Factor Level dBuV dB/m dBuV/m Limit dBuV/m Margin dB Detector Polar 1* 146.885 3.56 21.61 25.17 43.50 -18.33 PK Ver 2* 187.383 9.23 18.47 27.70 43.50 -15.80 PK Ver 3* 281.109 7.54 20.92 28.46 46.00 -17.54 PK Ver 4* 374.835 7.65 23.76 31.41 46.00 -14.59 PK Ver 5* 687.539 7.91 30.09 38.00 46.00 -8.00 PK Ver 6* 998.060 5.39 33.89 39.28 54.00 -14.72 PK Ver Report No.: LGT24G134RF02 Page 22 of 32 Project: LGT24G134 EUT: Personal CD/MP3 Player with FM PLL Radio M/N: SB3706 Test Voltage: Battery DC 3.7V Test Mode: TX High Chennal Note: Test Engineer: LiuH Temperature: 24 Humidity: 50%RH Test Data: 2024-08-20 No. Frequency MHz Reading Factor Level dBuV dB/m dBuV/m Limit dBuV/m Margin dB Detector Polar 1* 114.875 9.92 18.82 28.74 43.50 -14.76 PK Hor 2* 205.813 19.55 17.52 37.07 43.50 -6.43 PK Hor 3* 299.175 9.27 21.38 30.65 46.00 -15.35 PK Hor 4* 325.123 10.88 22.11 32.99 46.00 -13.01 PK Hor 5* 411.695 9.60 24.94 34.54 46.00 -11.46 PK Hor 6* 982.419 4.60 34.05 38.65 54.00 -15.35 PK Hor No. Frequency MHz Reading Factor Level dBuV dB/m dBuV/m Limit dBuV/m Margin dB Detector Polar 1* 44.186 3.74 20.66 24.40 40.00 -15.60 PK Ver 2* 143.369 3.95 21.32 25.27 43.50 -18.23 PK Ver 3* 205.813 12.95 17.52 30.47 43.50 -13.03 PK Ver 4* 411.574 11.43 24.95 36.38 46.00 -9.62 PK Ver 5* 687.539 7.69 30.09 37.78 46.00 -8.22 PK Ver 6* 965.201 6.06 33.61 39.67 54.00 -14.33 PK Ver Report No.: LGT24G134RF02 Page 23 of 32 3.3 FIELD STRENGTH EMISSION 3.3.1 REQUIREMENT The field strength of any emissions within the permitted 200 kHz band shall not exceed 250 microvolts/meter at 3 meters. The emission limit in this paragraph is based on measurement instrumentation employing an average detector. The provisions in §15.35 for limiting peak emissions apply. 3.3.2 TEST SETUP 3.3.3 EUT OPERATION CONDITIONS The EUT tested system was configured as the statements of 2.3 Unless otherwise a special operating condition is specified in the follows during the testing. Report No.: LGT24G134RF02 Page 24 of 32 3.3.4 TEST RESULTS Temperature: Test Voltage: 25 Battery DC 3.7V 3m distance measured Test frequency detecter (MHz) Peak 88.5 Avg Peak 93.7 Avg 102.9 Peak Avg Reading (dBuV/m) 39.06 28.84 40.65 28.68 36.39 29.94 Relative Humidity: 50% Test Mode: TX Mode factor dB 16.25 16.25 16.45 16.45 17.16 17.16 Corrected level (dBuV/m) 55.31 45.09 57.1 45.13 53.55 47.1 Limit (dBuV/m) 68 48 68 48 68 48 Margin (dB) -12.69 -2.91 -10.9 -2.87 -14.45 -0.9 Report No.: LGT24G134RF02 Page 25 of 32 Report No.: LGT24G134RF02 Page 26 of 32 4. BANDWIDTH TEST 4.1 Applied procedures / limit Emissions from the intentional radiator shall be confined within a band 200 kHz wide centered on the operating frequency. The 200 kHz band shall lie wholly within the frequency range of 88-108 MHz. 4.2 TEST PROCEDURE 1. Set RBW = 10kHz. 2. Set the video Mobile Phonewidth (VBW) 3 RBW. 3. Detector = Peak. 4. Trace mode = max hold. 5. Sweep = auto couple. 6. Allow the trace to stabilize. 7.Measure the maximum width of the emission that is constrained by the frequencies asso ciated with the two outermost amplitude points (upper and lower frequencies) that are atte nuated by 6 dB relative to the maximum level measured in the fundamental emission. 4.3 EUT OPERATION CONDITIONS 4.4 EUT OPERATION CONDITIONS Please refer to section 3.1.4 of this report. Report No.: LGT24G134RF02 Page 27 of 32 4.5 TEST RESULTS Temperature: Test Voltage: 25 DC 3.7V Relative Humidity: 60% Test Mode: TX Mode Measurement Centre Frequency Frequency Range (MHz) Frequency (MHz) TX LCH 88-108 88.5 TX MCH 88-108 93.7 TX HCH 88-108 102.9 20dB Bandwidth(kHz) 87.67 86.44 86.83 Report No.: LGT24G134RF02 Page 28 of 32 Report No.: LGT24G134RF02 Page 29 of 32 5. ANTENNA REQUIREMENT 5.1 STANDARD REQUIREMENT 15.203 requirement: For intentional device, according to 15.203: an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. 5.2 EUT ANTENNA The EUT antenna is Integral Antenna. It comply with the standard requirement. Report No.: LGT24G134RF02 Page 30 of 32 APPENDIX II - MEASUREMENT PHOTOS Note: Please see the attached RF_Test Setup photos for FCC ID & IC. Report No.: LGT24G134RF02 Page 31 of 32 APPENDIX III - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Note: Please see the attached SB3706_External Photos and SB3706_Internal Photos. END OF THE REPORT Report No.: LGT24G134RF02 Page 32 of 32Microsoft Word 2016 Microsoft Word 2016