SD4-MTED03In-vehicle Multimedia Host

Technical Description 1 In-vehicle Multimedia Host Technical Description Product Model: MTED03 Technical Description 2 Contents 1. Disclaimer 3 2. Technical Description ································································································ 4 2.1. Introduction to infotainment system ······························································································ 4 2.1.1. Simplified Block Diagram of Hardware System ············································· 4 2.2. System Architecture ·················································································································· 4 2.2.1. GSM UMTS and LTE Interface ································································· 6 2.3. WLAN and Bluetooth RF Interface ································································································· 6 2.3.1. Bluetooth Parameter ·············································································· 6 2.3.2. Bluetooth Antenna ················································································· 7 2.3.3. WLAN Parameter ·················································································· 7 2.3.4. WLAN Antenna ····················································································· 7 2.4. Pictures head-unit ···················································································································· 7 2.5. Connector definition ·················································································································· 7 2.6. Dimension 8 2.7. Explosion View ························································································································ 9 3. General Information ································································································ 11 3.1. Temperature ranges ················································································································· 11 3.2. Voltage ranges ······················································································································· 11 4. Verified status 11 Technical Description 3 1. Disclaimer The information contained in this document is the proprietary information of BYD Auto Industry Company Limited. The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of BYD, is strictly prohibited. BYD makes every effort to ensure the quality of the information it makes available. Notwithstanding the foregoing, BYD does not make any warranty as to the information contained herein, and does not accept any liability for any injury, loss or damage of any kind incurred by use of or reliance upon the information. BYD disclaims any and all responsibility for the application of the devices characterized in this document, and notes that the application of the device must comply with the SAFETY standards of the applicable country, and where applicable, with the relevant wiring rules. BYD reserves the right to make modifications, additions and deletions to this document due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this document. Copyright: Transmittal, reproduction, dissemination and/or editing of this document as well as utilization of its contents and communication thereof to others without express authorization are prohibited. Offenders will be held liable for payment of damages. All rights are reserved. Technical Description 4 2. Technical Description 2.1. Introduction to infotainment system The Dilink300F is a new platform of designed for BYD, which intend to be sold in different target markets. The Dilink300F contains features like: BT, WIFI, GNSS, FM, AM, DAB, 2G/3G/4G/5G. The Dilink300F Head-Unit will be manufactured in Xi’an, China. 2.1.1. Simplified Block Diagram of Hardware System 2.2. System Architecture The Head unit’s main functionalities are: • USB interface • Global Tuner: AM/FM/DAB • UMTS (B2/4/5) • Quad-band GSM/GPRS solution GSM(8501900) • LTE band(B2/4/5/7/12/13/14/17/18/19/25/26/38/40/41/42/48/66/71) • NR band(N2/5/7/38/41/66/71/77/78/) • Connectivity: Bluetooth (2400MHz-2483.5MHz;BT5.3), WLAN ( 2400MHz - 2483.5MHz,5150MHz - 5350MHz,5470MHz -5725MHz,5745MHz -5825MHz, IEEE 802.11 a/b/g/n/ac/ax/be) • GPS: 1575.42MHZ±1.023MHZ • Galileo: 1575.42MHZ±1.023MHZ • FM: 87.5MHz-108MHz • AM: 522KHz-1620KHz Technical Description 5 • DAB: 174MHz-240MHz • Ecall: 800MHz-5000MHz • LCD Display • Rear View Camera interface • Microphone interface Main components CPU: • MT8678 • ARMv9.2 DSU with below configuration -4 ARM® E-core L1 1-Cache, L1 D-Cache and L2 Cache -3 ARM® P-core L1 1-Cache,L1 D-Cache and L2 Cache. -1 ARM® XP-core L1 1-Cache, L1 D-Cache and L2 Cache. Shared L3 Cache • ARMe Mali GPU Per core capable of processing pixel rate 4M pixels/MHz, bi-linear texture rate 8M texels/MHz OpenGL Es 3.2/3.1/3.0/2.0/1.1 Vulkan 1.3 OpenCL up to 3.0 • LPDDR5/LPDDR5X up to 30GB • Support for USB 3.1 Type-C with DisplayPort 1.4 • Support for UFS 4.1 up to G5B (~24G);2-lane. • MIPl CSl-2 high-speed camera serial interfaces; max. 4 data lanes of D-DHY; max. 3 trios of C-PHY • Display: 8960x1316),60fps x1+ 1920 x 1080),60fps x5; MIPl DSl transmitter with D-PHY 4+4+4 lanes, or D-PHY 4+4+2+2 lanes, or C-PHY 3+3+3 trios, or C-PHY 3+3+2+2 trios; eDp 1.5, 4 lanes; DSP: • AK7709 • High performance 64-bit/37-bit floating-point processor optimized for high performance audio processing • Single-instruction, multiple-data (SIMD) computational architecture • Up to 491.52MHz operating frequency • The AK7709 is a highly integrated digital signal processor, including 8 stereo and 4 monaural sampling rate converters supporting sampling fre…

Text truncated - open the document above for the full version.

BYD Auto Industry Company Limited Covered Equipment Certification Attestation Letter Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: SD4-MTED03 BYD Auto Industry Company Limited (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. BYD Auto Industry Company Limited (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. BYD Auto Industry Company Limited (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). <Signature> Name：Gong liquan Title：Certification Engineer Company：BYD Auto Industry Company Limited Date: 3/30/2026

DATE : 3/30/2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint EST Technology Co., Ltd. Address:Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with BYD Auto Industry Company LimitedAddress: No. 3001, 3007, Hengping Road, Pingshan, Shenzhen,China; <Signature> Name：Gong liquan Title：Certification Engineer Company：BYD Auto Industry Company Limited

DATE : 3/30/2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, <Signature> ：Name Gong liquan ：Title Certification Engineer Company：BYD Auto Industry Company Limited

DATE:4/1/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:SD4-MTED03 ProductName:In-vehicleMultimediaHost RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommissionsrules,weherebyrequestthat thefollowingdocumentsbeheldconfidential:  Schematics Blockdiagram Operationdescription  Partlist  Turn-upprocedure Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. <Signature> Name：Gongliquan Title：CertificationEngineer Company：BYDAutoIndustryCompanyLimited

External Photos M/N: MTED03 External Photos M/N: MTED03 External Photos M/N: MTED03 External Photos M/N: MTED03

Label

Internal photo M/N: MTED03 Internal photo M/N: MTED03 Internal photo M/N: MTED03 Internal photo M/N: MTED03 Internal photo M/N: MTED03

Page 1 of 11 Report No. ESTE-R2603331 FCC 47 CFR MPE REPORT BYD Auto Industry Company Limited In-vehicle Multimedia Host Model Number: MTED03 FCC ID: SD4-MTED03 Applicant: BYD Auto Industry Company Limited Address: No.3001, 3007, Hengping Road, Pingshan, Shenzhen, Guangdong, P.R.China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2603331 Date of Test: Jan. 20, 2026 to Mar. 17, 2026 Date of Report: Mar. 26, 2026 Page 2 of 11 Report No. ESTE-R2603331 Maximum Permissible Exposure 1. Applicable Standards 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 and KDB 447498 D01 v06 this device has been defined as a mobile device whereby a distance of 0.3m normally can be maintained between the user and the device. 1.1. Limits for Maximum Permissible Exposure (MPE) (a) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 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 Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 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 Page 3 of 11 Report No. ESTE-R2603331 1.2. MPE Calculation Method E (V/m) = d G × P × 30 Power Density: Pd (W/m 2 ) = 377 E 2 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 = 2 d × 377 G × P × 30 From the peak EUT RF output power, the minimum mobile separation distance, d=0.3m, as well as the gain of the used antenna, the RF power density can be obtained Page 4 of 11 Report No. ESTE-R2603331 2. Conducted Power Result Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) GFSK 2402 5.01 3.170 2441 5.01 3.170 2480 5.39 3.459 π/4-DQPSK 2402 7.51 5.636 2441 7.53 5.662 2480 7.57 5.715 8-DPSK 2402 7.85 6.095 2441 7.87 6.124 2480 8.42 6.950 BLE 1M 2402 4.83 3.041 2440 4.91 3.097 2480 5.13 3.258 BLE 2M 2402 4.92 3.105 2440 4.88 3.076 2480 5.12 3.251 IEEE 802.11b 2412 13.26 21.184 2437 13.6 22.909 2462 13.52 22.491 IEEE 802.11g 2412 16.44 44.055 2437 17 50.119 2462 16.6 45.709 IEEE 802.11n HT20 2412 15.95 39.355 2437 16.63 46.026 2462 16.17 41.400 IEEE 802.11ax HE20 2412 17.46 55.719 2437 18.16 65.464 2462 17.25 53.088 IEEE 802.11be EHT20 2412 17.41 55.081 2437 18.17 65.615 2462 17.43 55.335 IEEE 802.11a 5180 15.08 32.211 5200 15.33 34.119 5240 15.08 32.211 5260 14.89 30.832 5300 14.34 27.164 Page 5 of 11 Report No. ESTE-R2603331 5320 14.23 26.485 5500 14.13 25.882 5580 13.89 24.491 5700 13.26 21.184 5745 13.11 20.464 5785 13.47 22.233 5825 13.12 20.512 IEEE 802.11n HT20 5180 14.66 29.242 5200 14.73 29.717 5240 14.18 26.182 5260 14.18 26.182 5300 13.71 23.496 5320 13.61 22.961 5500 13.36 21.677 5580 12.32 17.061 5700 12.16 16.444 5745 11.84 15.276 5785 10.67 11.668 5825 12.71 18.664 IEEE 802.11ac VHT20 5180 14.29 26.853 5200 14.53 28.379 5240 13.88 24.434 5260 13.68 23.335 5300 13.33 21.528 5320 13.16 20.701 5500 14.92 31.046 5580 13.95 24.831 5700 13.76 23.768 5745 13.44 22.080 5785 12.92 19.588 5825 12.81 19.099 IEEE 802.11ax HE20 5180 14.63 29.040 5200 14.42 27.669 5240 14.23 26.485 5260 13.81 24.044 5300 13.58 22.803 5320 13.31 21.429 5500 15.05 31.989 5580 14.1 25.704 Page 6 of 11 Report No. ESTE-R2603331 5700 13.74 23.659 5745 13.04 20.137 5785 12.75 18.836 5825 12.86 19.320 IEEE 802.11be EHT20 5180 14.97 31.405 5200 15.34 34.198 5240 14.87 30.690 5260 14.71 29.580 5300 14.56 28.576 5320 14.2 26.303 5500 14.42 27.669 5580 13.85 24.266 5700 13.4 21.878 5745 13.58 22.803 5785 13.37 21.727 5825 13.36 21.677 IEEE 802.11n HT40 5190 14.96 31.333 5230 14.39 27.479 5270 14.05 25.410 5310 13.8 23.988 5510 12.33 17.100 5590 14.73 29.717 5670 14.15 26.002 5755 13.91 24.604 5795 12.93 19.634 IEEE 802.11ac VHT40 5190 14.68 29.376 5230 14.21 26.363 5270 13.84 24.210 5310 13.6 22.909 5510 14.77 29.992 5590 13.89 24.491 5670 13.72 23.550 5755 12.99 19.907 5795 12.6 18.197 IEEE 802.11ax HE40 5190 14.91 30.974 5230 14.69 29.444 5270 14.1 25.704 5310 12.4 17.378 5510 15.91 38.994 Page 7 of 11 Report No. ESTE-R2603331 5590 16.4 43.652 5670 15.8 38.019 5755 15.9 38.905 5795 15.96 39.446 IEEE 802.11be EHT40 5190 15.55 35.892 5230 15.51 35.563 5270 15.15 32.734 5310 15.19 33.037 5510 14.54 28.445 5590 14.2 26.303 5670 16.58 45.499 5755 16.95 49.545 5795 16.83 48.195 IEEE 802.11ac VHT80 5210 14.52 28.314 5290 13.55 22.646 5530 14.48 28.054 5610 14.07 25.527 5775 12.77 18.923 IEEE 802.11ax HE80 5210 12.59 18.155 5290 14.99 31.550 5530 17.25 53.088 5610 17.03 50.466 5775 16.61 45.814 IEEE 802.11be EHT80 5210 15.57 36.058 5290 14.9 30.903 5530 14.39 27.479 5610 13.92 24.660 5775 13.64 23.121 IEEE 802.11ac VHT160 5250 14.23 26.485 5570 16.13 41.020 IEEE 802.11ax HE160 5250 14.49 28.119 5570 14.44 27.797 IEEE 802.11be EHT160 5250 13.52 22.491 5570 14.4 27.542 Page 8 of 11 Report No. ESTE-R2603331 Mode Peak output power (dBm) Peak output power(mW) GSM 850(824-849MHz) 32.55 1798.871 GPRS 850(824-849MHz) 32.88 1940.886 EGPRS 850(824-849MHz) 27.44 554.626 GSM 1900(1850-1910MHz) 30.00 1000.000 GPRS 1900(1850-1910MHz) 30.07 1016.249 EGPRS 1900(1850-1910MHz) 26.02 399.945 WCDMA Band 2(1850-1910MHz) 23.72 235.505 WCDMA Band 4(1710-1755MHz) 23.20 208.930 WCDMA Band 5(824-849MHz) 24.78 30…

Text truncated - open the document above for the full version.

Page 1 of 49 Report No. ESTE-R2603264 Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Frequency[MHz] 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.954 2401.532 2402.486 --- --- DH5 Ant1 2441 1.005 2440.469 2441.474 --- --- DH5 Ant1 2480 0.948 2479.529 2480.477 --- --- 2DH5 Ant1 2402 1.314 2401.340 2402.654 --- --- 2DH5 Ant1 2441 1.320 2440.334 2441.654 --- --- 2DH5 Ant1 2480 1.347 2479.322 2480.669 --- --- 3DH5 Ant1 2402 1.305 2401.340 2402.645 --- --- 3DH5 Ant1 2441 1.311 2440.343 2441.654 --- --- 3DH5 Ant1 2480 1.305 2479.340 2480.645 --- --- Page 2 of 49 Report No. ESTE-R2603264 Test Graphs DH5-Ant1-2402 DH5-Ant1-2441 DH5-Ant1-2480 Page 3 of 49 Report No. ESTE-R2603264 2DH5-Ant1-2402 2DH5-Ant1-2441 Page 4 of 49 Report No. ESTE-R2603264 2DH5-Ant1-2480 3DH5-Ant1-2402 Page 5 of 49 Report No. ESTE-R2603264 3DH5-Ant1-2441 3DH5-Ant1-2480 Page 6 of 49 Report No. ESTE-R2603264 Page 7 of 49 Report No. ESTE-R2603264 Appendix B: Maximum conducted output power Test Result Peak Test Mode Antenna Frequency[MHz] Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 5.01 ≤20.97 PASS DH5 Ant1 2441 5.01 ≤20.97 PASS DH5 Ant1 2480 5.39 ≤20.97 PASS 2DH5 Ant1 2402 7.51 ≤20.97 PASS 2DH5 Ant1 2441 7.53 ≤20.97 PASS 2DH5 Ant1 2480 7.57 ≤20.97 PASS 3DH5 Ant1 2402 7.85 ≤20.97 PASS 3DH5 Ant1 2441 7.87 ≤20.97 PASS 3DH5 Ant1 2480 8.42 ≤20.97 PASS Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS Page 8 of 49 Report No. ESTE-R2603264 DH5-Ant1-2480-PASS 2DH5-Ant1-2402-PASS Page 9 of 49 Report No. ESTE-R2603264 2DH5-Ant1-2441-PASS 2DH5-Ant1-2480-PASS Page 10 of 49 Report No. ESTE-R2603264 3DH5-Ant1-2402-PASS 3DH5-Ant1-2441-PASS Page 11 of 49 Report No. ESTE-R2603264 3DH5-Ant1-2480-PASS Page 12 of 49 Report No. ESTE-R2603264 Appendix C: Carrier frequency separation Test Result TestMode Antenna Frequency[MHz] Result[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.897 ≥0.670 PASS DH5 Ant1 2441 0.999 ≥0.670 PASS DH5 Ant1 2480 1.101 ≥1.005 PASS 2DH5 Ant1 2402 1.491 ≥1.347 PASS 2DH5 Ant1 2441 1.113 ≥0.898 PASS 2DH5 Ant1 2480 0.987 ≥0.898 PASS 3DH5 Ant1 2402 1.14 ≥0.874 PASS 3DH5 Ant1 2441 1.002 ≥0.874 PASS 3DH5 Ant1 2480 1.257 ≥0.874 PASS Page 13 of 49 Report No. ESTE-R2603264 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS DH5-Ant1-2480-PASS Page 14 of 49 Report No. ESTE-R2603264 2DH5-Ant1-2402-PASS 2DH5-Ant1-2441-PASS Page 15 of 49 Report No. ESTE-R2603264 2DH5-Ant1-2480-PASS 3DH5-Ant1-2402-PASS Page 16 of 49 Report No. ESTE-R2603264 3DH5-Ant1-2441-PASS 3DH5-Ant1-2480-PASS Page 17 of 49 Report No. ESTE-R2603264 Page 18 of 49 Report No. ESTE-R2603264 Appendix D: Time of occupancy Test Result TestMode Antenna Frequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Ant1 Hop 0.370 156 0.058 ≤0.4 PASS DH3 Ant1 Hop 1.610 154 0.248 ≤0.4 PASS DH5 Ant1 Hop 2.860 76 0.217 ≤0.4 PASS 2DH1 Ant1 Hop 0.380 168 0.064 ≤0.4 PASS 2DH3 Ant1 Hop 1.620 165 0.267 ≤0.4 PASS 2DH5 Ant1 Hop 2.860 86 0.246 ≤0.4 PASS 3DH1 Ant1 Hop 0.377 152 0.057 ≤0.4 PASS 3DH3 Ant1 Hop 1.620 159 0.258 ≤0.4 PASS 3DH5 Ant1 Hop 2.860 80 0.229 ≤0.4 PASS Page 19 of 49 Report No. ESTE-R2603264 Test Graphs DH1-Ant1-Hop-PASS DH3-Ant1-Hop-PASS Page 20 of 49 Report No. ESTE-R2603264 DH5-Ant1-Hop-PASS Page 21 of 49 Report No. ESTE-R2603264 2DH1-Ant1-Hop-PASS Page 22 of 49 Report No. ESTE-R2603264 2DH3-Ant1-Hop-PASS Page 23 of 49 Report No. ESTE-R2603264 2DH5-Ant1-Hop-PASS Page 24 of 49 Report No. ESTE-R2603264 3DH1-Ant1-Hop-PASS Page 25 of 49 Report No. ESTE-R2603264 3DH3-Ant1-Hop-PASS Page 26 of 49 Report No. ESTE-R2603264 3DH5-Ant1-Hop-PASS Page 27 of 49 Report No. ESTE-R2603264 Page 28 of 49 Report No. ESTE-R2603264 Appendix E: Number of hopping channels Test Result TestMode Antenna Frequency[MHz] Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS Page 29 of 49 Report No. ESTE-R2603264 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS 3DH5-Ant1-Hop-PASS Page 30 of 49 Report No. ESTE-R2603264 Page 31 of 49 Report No. ESTE-R2603264 Appendix F: Band edge measurements Test Result TestMode Antenna ChName Frequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 4.04 -50.25 ≤-15.96 PASS DH5 Ant1 High 2480 4.62 -49.94 ≤-15.38 PASS DH5 Ant1 Low Hop_2402 4.50 -48.72 ≤-15.5 PASS DH5 Ant1 High Hop_2480 4.31 -48.68 ≤-15.69 PASS 2DH5 Ant1 Low 2402 4.02 -49.08 ≤-15.98 PASS 2DH5 Ant1 High 2480 4.62 -49.17 ≤-15.38 PASS 2DH5 Ant1 Low Hop_2402 2.12 -49.08 ≤-17.88 PASS 2DH5 Ant1 High Hop_2480 4.26 -48.75 ≤-15.74 PASS 3DH5 Ant1 Low 2402 3.06 -49.1 ≤-16.94 PASS 3DH5 Ant1 High 2480 4.40 -49.68 ≤-15.6 PASS 3DH5 Ant1 Low Hop_2402 4.37 -48.84 ≤-15.63 PASS 3DH5 Ant1 High Hop_2480 4.35 -48.63 ≤-15.65 PASS Page 32 of 49 Report No. ESTE-R2603264 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2480-PASS DH5-Ant1-Hop_2402-PASS Page 33 of 49 Report No. ESTE-R2603264 DH5-Ant1-Hop_2480-PASS 2DH5-Ant1-2402-PASS Page 34 of 49 Report No. ESTE-R2603264 2DH5-Ant1-2480-PASS 2DH5-Ant1-Hop_2402-PASS Page 35 of 49 Report No. ESTE-R2603264 2DH5-Ant1-Hop_2480-PASS 3DH5-Ant1-2402-PASS Page 36 of 49 Report No. ESTE-R2603264 3DH5-Ant1-2480-PASS 3DH5-Ant1-Hop_2402-PASS Page 37 of 49 Report No. ESTE-R2603264 3DH5-Ant1-Hop_2480-PASS Page 38 of 49 Report No. ESTE-R2603264 Appendix G: Conducted Spurious Emission Test Result TestMode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 30~26500 4.04 -41.94 ≤-15.96 PASS DH5 Ant1 2441 30~26500 4.09 -41.78 ≤-15.91 PASS DH5 Ant1 2480 30~26500 4.62 -41.47 ≤-15.38 PASS 2DH5 Ant1 2402 30~26500 4.02 -41.63 ≤-15.98 PASS 2DH5 Ant1 2441 30~26500 4.34 -42.09 ≤-15.66 PASS 2DH5 Ant1 2480 30~26500 4.62 -42.29 ≤-15.38 PASS 3DH5 Ant1 2402 30~26500 3.06 -41.99 ≤-16.94 PASS 3DH5 Ant1 2441 30~26500 4.21 -41.9 ≤-15.79 PASS 3DH5 Ant1 2480 30~26500 4.40 -41.43 ≤-15.6 PASS Page 39 of 49 Report No. ESTE-R2603264 Test Graphs DH5-Ant1-2402-30~26500-PASS DH5-Ant1-2441-30~26500-PASS DH5-Ant1-2480-30~26500-PASS Page 40 of …

Text truncated - open the document above for the full version.

Page 1 of 46 Report No. ESTE-R2603264 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of BYD Auto Industry Company Limited In-vehicle Multimedia Host Model Number: MTED03 FCC ID: SD4-MTED03 Applicant: BYD Auto Industry Company Limited Address: No.3001, 3007, Hengping Road, Pingshan, Shenzhen, Guangdong, P.R.China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2603264 Date of Test: Jan. 20, 2026 to Mar. 17, 2026 Date of Report: Mar. 27, 2026 Page 2 of 46 Report No. ESTE-R2603264 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................... 5 1.1. Description of Device (EUT) ............................................................................................................ 5 1.2. Antenna Information ......................................................................................................................... 5 1.3. Information of RF Cable ................................................................................................................... 5 2. SUMMARY OF TEST ........................................................................................................................... 6 2.1. Summary of test result ..................................................................................................................... 6 2.2. Test Facilities ..................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................ 8 2.4. Assistant equipment used for test .................................................................................................. 8 2.5. Block Diagram ................................................................................................................................... 8 2.6. Test mode .......................................................................................................................................... 9 2.7. Channel List ..................................................................................................................................... 10 2.8. Power Setting of Test Software .................................................................................................... 10 2.9. Test Equipment ............................................................................................................................... 11 3. MAXIMUM PEAK OUTPUT POWER ................................................................................................... 12 3.1. Limit ................................................................................................................................................... 12 3.2. Test Setup ........................................................................................................................................ 12 3.3. Spectrum Analyzer Setting ............................................................................................................ 12 3.4. Test Procedure ................................................................................................................................ 12 3.5. Test Result ....................................................................................................................................... 12 4. 20 DB BANDWIDTH ......................................................................................................................... 13 4.1. Limit ................................................................................................................................................... 13 4.2. Test Setup ........................................................................................................................................ 13 4.3. Spectrum Analyzer Setting ............................................................................................................ 13 4.4. Test Procedure ................................................................................................................................ 13 4.5. Test Result ....................................................................................................................................... 13 5. CARRIER FREQUENCY SEPARATION .............................................................................................. 14 5.1. Limit ................................................................................................................................................... 14 5.2. Test Setup ........................................................................................................................................ 14 5.3. Spectrum Analyzer Setting ............................................................................................................ 14 5.4. Test Procedure ................................................................................................................................ 14 5.5. Test Result ....................................................................................................................................... 14 6. NUMBER OF HOPPING CHANNEL ................................................................................................... 15 6.1. Limit ................................................................................................................................................... 15 6.2. Test Setup ........................................................................................................................................ 15 6.3. …

Text truncated - open the document above for the full version.

STE5GWiFiAntennaProductSpecification STE-79038405GWIFI天线 STE-79038405GWIFIAntenna Ver.：A/0 编写Writer：李文奇Li.wenqidate：2025.11.18 批准Approve：冯均劲Feng.junjingdate：2025.11.18 第十五事业部 Division15 STE5GWiFiAntennaProductSpecification 文件修改记录FileRevisionHistory 版本号 Ver. 修改内容简述 RevisionHistory 生效日期 Effectivedate 拟稿 draft 审核 Audit 批准 Approve A/0 首次发行 Initialissue 2025.09.17 李文奇冯均劲 STE5GWiFiAntennaProductSpecification 目录Content 1产品概述GeneralDescription 1.1概述Application 1.2系统/产品框图SystemandProductdiagram 1.3外形尺寸图MechanicalDimension 1.4引脚定义PinDefinition 2技术参数Specification 2.1WiFi天线WiFiAntenna 2.25G天线5GAntenna 3可靠性Reliability 4安装推荐Installationrecommendation STE5GWiFiAntennaProductSpecification 1产品概述GeneralDescription 1.1概述Application 该5G多合一天线天线包含：5G主天线*1；5G副天线*1；WiFiBT天线*1。 Antennasetup:5Gmainantenna×1,5Gdivantenna×1，WiFiBTantenna×1. 1.2系统/产品框图SystemandProductdiagram 图1：系统/产品框图 Figure1.SystemandProductdiagram 1.3外形尺寸图MechanicalDimensions 5G主天线，内有 10K检测电阻对 地 5Gmainantenna with10KΩ WiFiBT 天线，内 有 10K 检测电阻 对地 WiFiBTantenna with10KΩ 5G副天线，内有 10K检测电阻对 地 5Gdivantenna with10KΩ STE5GWiFiAntennaProductSpecification 图2：外形图 Figure2.MechanicalDimension 1.4引脚定义PinDefinition 序 号 使用位置 电器端护套端 连接器型号品牌连接器型号品牌 15G主天线 59S2AQ-40MT5-E-1 罗森博格 Ronsenberger 59z113-000-E 罗森博格 Ronsenberger 2WIFIBT天线 59S2AQ-40MT5-K-1 罗森博格 Ronsenberger 59z113-000-K 罗森博格 Ronsenberger 5G副天线 59S2AQ-40MT5-B-1 罗森博格 Ronsenberger 59z113-000-B 罗森博格 Ronsenberger STE5GWiFiAntennaProductSpecification 2产品参数ProductSpecification 2.1WIFIBT天线WiFiBTAntenna 频率 Frequency 驻波 SWR 峰值增益 PeakGain 平均效率 AverageEfficiency WiFi天线 WiFiAntenna 2400～2500MHz ≤3…

Text truncated - open the document above for the full version.