2BKDH-MD-25Bluetooth headphones

FCC Warming: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2)this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. lf this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. RF warning for Portable device: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Local Representative Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(7), of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC IDModel name 2BKDH-MD-25MD-25, MD-21, MD-22, MD-23, MD-26, MD-27, MD-28, MD-29, MD-30, MD-31, MD-32, MD-33, MD-35, MD-36, MD-37, MD-38, MD-39, MD-50, MD-51, MD-52 We hereby acknowledge as follows: i.both signees confirm that the point of contact accepts responsibility to act as a US- American Representative on behalf of the applicant ii.the point of contact provides the physical U.S. address and email as listed below iii.both parties maintain the requirements of this agreement for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. iv.An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. US-American Point of ContactApplicant/Approval Holder Signature Date: 2026-6-30 Signature Date: 2026-6-30 Company Name:GLOCERTS TECHNOLOGY INCDongyang Xiaoqi Industry and Trade Co., Ltd. FRN:00363397370035823731 Contact Name:Huiying FanAmbert Gao Address:19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507 3rd Floor, No. 77 Maxiang Road, Lantian Community, Baiyun Street, Dongyang City, Jinhua City, Zhejiang Province, China Phone:(626) 588-803918589044591 Email:[email protected]@qq.com

Page 1 of 5 FCC ID: 2BKDH-MD-25 External photos Page 2 of 5 FCC ID: 2BKDH-MD-25 Page 3 of 5 FCC ID: 2BKDH-MD-25 Page 4 of 5 FCC ID: 2BKDH-MD-25 Page 5 of 5 FCC ID: 2BKDH-MD-25

Label FCC ID: 2BKDH-MD-25

Page 1 of 2 FCC ID: 2BKDH-MD-25 Internal photos Page 2 of 2 FCC ID: 2BKDH-MD-25 Chip ANT

Page 1 of 7 Report No.: AiTSZ-260610051FW2 Note: This device has been tested and found to comply with the standard(s) listed, this test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. This report shall not be reproduced except in full, without the written approval of Guangdong Asia Hongke Test Technology Limited. If there is a need to alter or revise this document, the right belongs to Guangdong Asia Hongke Test Technology Limited, and it should give a prior written notice of the revision document. This test report must not be used by the client to claim product endorsement. Guangdong Asia Hongke Test Technology Limited B1/F, Building 11, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China. RF Exposure evaluation Product Name : Bluetooth headphones Brand Name : MDHL Model : MD-25 Series Model : MD-21, MD-22, MD-23, MD-26, MD-27, MD-28, MD-29, MD-30, MD-31, MD-32, MD-33, MD-35, MD-36, MD-37, MD-38, MD-39, MD-50, MD-51, MD-52 FCC ID : 2BKDH-MD-25 Applicant : Dongyang Xiaoqi Industrial and Trade Co., Ltd. Address : 3rd Floor, No. 77 Maxiang Road, Lantian Community, Baiyun Subdistrict, Dongyang City, Jinhua City, Zhejiang Province Manufacturer : Dongyang Xiaoqi Industrial and Trade Co., Ltd. Address : 3rd Floor, No. 77 Maxiang Road, Lantian Community, Baiyun Subdistrict, Dongyang City, Jinhua City, Zhejiang Province Standard(s) : 47CFR §1.1310, 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Date of Receipt : Jun. 10, 2026 Date of Test : Jun. 10, 2026~ Jun. 17, 2026 Issued Date : Jun. 30, 2026 Issued By: Guangdong Asia Hongke Test Technology Limited B1/F, Building 11, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Tel.: +86 0755-230967639 Fax.: +86 0755-230967639 Reviewed by: Approved by: Nels Wang Allen Wang Page 2 of 7 Report No.: AiTSZ-260610051FW2 Report Revise Record Report Version Issued Date Notes M0 Jun. 30, 2026 Initial Release Page 3 of 7 Report No.: AiTSZ-260610051FW2 Contents 1 GENERAL INFORMATION .......................................................................................................................................... 4 1.1 ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 4 1.2 GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 4 1.3 TEST FACILITY .............................................................................................................................................................. 5 1.4 MEASUREMENT UNCERTAINTY ........................................................................................................................................ 5 2 METHOD OF MEASUREMENT ................................................................................................................................... 6 2.1 APPLICABLE STANDARD.................................................................................................................................................. 6 2.2 EVALUATION METHOD AND LIMIT .................................................................................................................................... 6 2.3 MANUFACTURING TOLERANCE ........................................................................................................................................ 7 2.4 EVALUATION RESULT ..................................................................................................................................................... 7 2.5 CONCLUSION ............................................................................................................................................................... 7 Page 4 of 7 Report No.: AiTSZ-260610051FW2 1 GENERAL INFORMATION 1.1 Environmental conditions During the measurement the environmental conditions were within the listed ranges: Normal Temperature: 25°C Relative Humidity: 55 % Air Pressure: 101 kPa 1.2 General Description of EUT Product Name: Bluetooth headphones Model/Type reference: MD-25 Serial Model: MD-21, MD-22, MD-23, MD-26, MD-27, MD-28, MD-29, MD-30, MD-31, MD-32, MD-33, MD-35, MD-36, MD-37, MD-38, MD-39, MD-50, MD-51, MD-52 Model difference All the models are electrically identical, with the same mechanical structure and design, except for differences in appearance and model names Power Supply: Charging Case: Input: USB DC 5.0V 3.7V 200mAh by Rechargeable Li-ion battery Earphones: Input: Contact PIN DC 5.0V 3.7V 30mAh by Rechargeable Li-ion battery Hardware Version: N/A Software Version: N/A Sample(s) Status: AiTSZ-260610051-1(Normal sample) AiTSZ-260610051-2(Engineer sample) Bluetooth: Supported type: Bluetooth BR/EDR Modulation: GFSK, π/4DQPSK, 8DPSK Operation frequency: 2402MHz~2480MHz Channel number: 79 Channel separation: 1MHz Antenna type: Chip antenna Antenna gain: 2.70dBi Remark: The above DUT's information was declared by manufacturer. For more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. Page 5 of 7 Report No.: AiTSZ-260610051FW2 1.3 Test Facility Test Laboratory: Guangdong Asia Hongke Test Technology Limited B1/F, Building 11, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China The test facility is recognized, certified or accredited by the following organizations: FCC-Registration No.: 251906 Designation Number: CN1376 Guangdong Asia Hongke Test Technology Limited has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. IC —Reg…

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Page 1 of 37 Report No.: AiTSZ-260610051FW1 Note: This device has been tested and found to comply with the standard(s) listed, this test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. This report shall not be reproduced except in full, without the written approval of Guangdong Asia Hongke Test Technology Limited. If there is a need to alter or revise this document, the right belongs to Guangdong Asia Hongke Test Technology Limited, and it should give a prior written notice of the revision document. This test report must not be used by the client to claim product endorsement. Guangdong Asia Hongke Test Technology Limited B1/F, Building 11, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China. TEST REPORT Product Name : Bluetooth headphones Brand Name : MDHL Model : MD-25 Series Model : MD-21, MD-22, MD-23, MD-26, MD-27, MD-28, MD-29, MD-30, MD-31, MD-32, MD-33, MD-35, MD-36, MD-37, MD-38, MD-39, MD-50, MD-51, MD-52 FCC ID : 2BKDH-MD-25 Applicant : Dongyang Xiaoqi Industrial and Trade Co., Ltd. Address : 3rd Floor, No. 77 Maxiang Road, Lantian Community, Baiyun Subdistrict, Dongyang City, Jinhua City, Zhejiang Province Manufacturer : Dongyang Xiaoqi Industrial and Trade Co., Ltd. Address : 3rd Floor, No. 77 Maxiang Road, Lantian Community, Baiyun Subdistrict, Dongyang City, Jinhua City, Zhejiang Province Standard(s) : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of Receipt : Jun. 10, 2026 Date of Test : Jun. 10, 2026~ Jun. 17, 2026 Issued Date : Jun. 30, 2026 Issued By: Guangdong Asia Hongke Test Technology Limited B1/F, Building 11, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Tel.: +86 0755-230967639 Fax.: +86 0755-230967639 Reviewed by: Approved by: Nels Wang Allen Wang Page 2 of 37 Report No.: AiTSZ-260610051FW1 Report Revise Record Report Version Issued Date Notes M0 Jun. 30, 2026 Initial Release Page 3 of 37 Report No.: AiTSZ-260610051FW1 Contents 1 TEST SUMMARY ....................................................................................................................................................... 4 1.1 TEST STANDARDS ......................................................................................................................................................... 4 1.2 TEST SUMMARY ........................................................................................................................................................... 4 1.3 TEST FACILITY .............................................................................................................................................................. 5 1.4 MEASUREMENT UNCERTAINTY ........................................................................................................................................ 5 2 GENERAL INFORMATION .......................................................................................................................................... 6 2.1 ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 6 2.2 GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 6 2.3 DESCRIPTION OF TEST MODES AND TEST FREQUENCY .......................................................................................................... 7 2.4 SPECIAL ACCESSORIES ................................................................................................................................................... 8 2.5 EQUIPMENT LIST FOR THE TEST ....................................................................................................................................... 8 3 TEST CONDITIONS AND RESULTS ............................................................................................................................ 10 3.1 CONDUCTED EMISSIONS TEST ....................................................................................................................................... 10 3.2 RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 13 3.3 MAXIMUM PEAK OUTPUT POWER................................................................................................................................. 20 3.4 20DB BANDWIDTH ..................................................................................................................................................... 21 3.5 OCCUPIED BANDWIDTH ............................................................................................................................................... 22 3.6 FREQUENCY SEPARATION ............................................................................................................................................. 23 3.7 NUMBER OF HOPPING FREQUENCY ................................................................................................................................. 24 3.8 TIME OF OCCUPANCY (DWELL TIME) .............................................................................................................................. 25 3.9 OUT-OF-BAND EMISSIONS ........................................................................................................................................... 26 3.10 PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .......................................................................................................... 28 3.11 ANTENNA REQUIREMENT ............................................................................................................................................. 29 4 TES…

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2.4GHz 1608 Chip Antenna: YC0603NBU9 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation 0603 YC (A) (B) N (C) B (D) U (E) ElectricalSpecificatio 9 (F) n ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 1.6x0.8mm( ± 0.1mm) (C)MaterialHighKmaterial (D)Frequency2.4~ 2 . 5 GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=9 WorkingFrequencyRange2400 ~2500 MHz Bandwidth120MHz(Min.) PeakGain2.7dBi (Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) Dimension(mm) L 1.60±0.10 W 0.80±0.10 T 0.80±0.10 咏成國際科技有限公司電話 :13530576606 RAINInternationalTechnologyCo.,Ltd. TEL:13530576606 7/F,BuildingF,ZhichuangPark,Tong'an,Gushu,Shenzhen 2.4GHz 1608 Chip Antenna:YC0603NBU9 _ 1 EvaluationBoardReference 设计指导： 1、原则上，净空区左侧边缘距离板边的间距L1应该尽量大，且 注意与底部电池的间距。 2、净空区的宽度W最优为1.5mm~2mm。 3、净空区的长度L2的长度为2mm~4mm。 2.4GHz 1608 Chip Antenna:YC0603NBU9 _ ElectricalCharacteristics ReturnLoss&Radiation ELECTRICALCHARACTERISTICSS11 _ 2.4GHz 1608 Chip Antenna:YC0603NBU9 Radiation Pattern 2.4GHz 1608 Chip Antenna:YC0603NBU9 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZABCD 16087” 4.0±0. E 5K/Reel 5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType 1.90±0.2 0603 03.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 _ 2.4GHz 1608 Chip Antenna:YC0603NBU9 Reliability Table TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz 3216 Chip Antenna:YC0603NBU9 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 1NewDatashee2025/06/02t 2Add2Dradiationcharacteristi2026/10/01c

v Page 1 of 60 Report No.: AiTSZ-260610051FW1 Appendix RF test data for BT v Page 2 of 60 Report No.: AiTSZ-260610051FW1 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) GFSK SISO 2402 DH5 2.914 3.750 77.71 1.10 0.04 2441 DH5 2.914 3.750 77.71 1.10 0.04 2480 DH5 2.913 3.749 77.70 1.10 0.03 Pi/4DQPSK SISO 2402 2DH5 2.920 3.751 77.85 1.09 0.03 2441 2DH5 2.920 3.751 77.85 1.09 0.03 2480 2DH5 2.920 3.751 77.85 1.09 0.03 8DPSK SISO 2402 3DH5 2.922 3.749 77.94 1.08 0.03 2441 3DH5 2.923 3.750 77.95 1.08 0.01 2480 3DH5 2.922 3.749 77.94 1.08 0.03 v Page 3 of 60 Report No.: AiTSZ-260610051FW1 1.2 Test Graph 1.2.1 Ant1 GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV v Page 4 of 60 Report No.: AiTSZ-260610051FW1 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV v Page 5 of 60 Report No.: AiTSZ-260610051FW1 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV v Page 6 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV v Page 7 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV v Page 8 of 60 Report No.: AiTSZ-260610051FW1 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.862 / Pass 2441 DH5 1 0.865 / Pass 2480 DH5 1 0.864 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.166 / Pass 2441 2DH5 1 1.166 / Pass 2480 2DH5 1 1.158 / Pass 8DPSK SISO 2402 3DH5 1 1.166 / Pass 2441 3DH5 1 1.166 / Pass 2480 3DH5 1 1.166 / Pass 2.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.927 / Pass 2441 DH5 1 0.929 / Pass 2480 DH5 1 0.930 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.261 / Pass 2441 2DH5 1 1.264 / Pass 2480 2DH5 1 1.260 / Pass 8DPSK SISO 2402 3DH5 1 1.257 / Pass 2441 3DH5 1 1.279 / Pass 2480 3DH5 1 1.260 / Pass v Page 9 of 60 Report No.: AiTSZ-260610051FW1 2.2 Test Graph 2.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV v Page 10 of 60 Report No.: AiTSZ-260610051FW1 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV v Page 11 of 60 Report No.: AiTSZ-260610051FW1 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV v Page 12 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV v Page 13 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV v Page 14 of 60 Report No.: AiTSZ-260610051FW1 2.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV v Page 15 of 60 Report No.: AiTSZ-260610051FW1 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV v Page 16 of 60 Report No.: AiTSZ-260610051FW1 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV v Page 17 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV v Page 18 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV v Page 19 of 60 Report No.: AiTSZ-260610051FW1 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 3.73 <=30 Pass 2441 DH5 0.98 <=30 Pass 2480 DH5 2.02 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 1.37 <=20.97 Pass 2441 2DH5 1.83 <=20.97 Pass 2480 2DH5 2.89 <=20.97 Pass 8DPSK SISO 2402 3DH5 2.20 <=20.97 Pass 2441 3DH5 2.60 <=20.97 Pass 2480 3DH5 3.66 <=20.97 Pass Note1: Antenna Gain: Ant1: 2.70dBi; v Page 20 of 60 Report No.: AiTSZ-260610051FW1 3.2 Test Graph 3.2.1 Power GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV v Page 21 of 60 Report No.: AiTSZ-260610051FW1 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV v Page 22 of 60 Report No.: AiTSZ-260610051FW1 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV v Page 23 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV v Page 24 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV v Page 25 of 60 Report No.: AiTSZ-260610051FW1 4. Carrier Frequency Separation 4.1 Test Result 4.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.002 0.930 >=0.93 Pass Pi/4DQPSK SISO HOPP 2DH5 0.986 1.264 >=0.843 Pass 8DPSK SISO HOPP 3DH5 1.003 1.279 >=0.853 Pass v Page 26 of 60 Report No.: AiTSZ-260610051FW1 4.2 Test Graph 4.2.1 Ant1 GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV v Page 27 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_HOPP_Ant1_NTNV v Page 28 of 60 Report No.: AiTSZ-260610051FW1 5. Number of Hopping Frequencies 5.1 Test Result 5.1.1 HoppNum Mode TX Type Frequency (MHz) Packet Type Num of Hopping Frequencies Verdict ANT1 Limit GFSK SISO HOPP DH5 79 >=15 Pass Pi/4DQPSK SISO HOPP 2DH5 79 >=15 Pass 8DPSK SISO HOPP 3DH5 79 >=15 Pass v Page 29 of 60 Report No.: AiTSZ-260610051FW1 5.2 Test Graph 5.2.1 HoppNum GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV v Page 30 of 60 Report No.: AiTSZ-260610051FW1 8DPSK_3DH5_HOPP_Ant1_NTNV v Page 31 of 60 Report No.: AiTSZ-260610051FW1 6. Time of Occupancy (Dwell Time) 6.1 Test Result 6.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Duration of Single Pulse (ms) Observation Period (s) Num of Pulse in Observation Period Dwell Time (ms) Limit (ms) Verdict GFSK SISO HOPP DH1 0.410 31.600 320 131.200 <=400 Pass DH3 1.666 31.600 160 266.560 <=400 Pass DH5 2.916 31.600 102 297.432 <=400 Pass Pi/4DQPSK SISO HOPP 2DH1 0.424 31.600 320 135.680 <=400 Pass 2DH3 1.676 31.600 159 266.484 <=400 Pass 2DH5 2.926 31.600 102 298.452 <=400 Pass 8DPSK SISO HOPP 3DH1 0.422 31.600 320 135.040 <=400 Pass 3DH3 1.672 31.600 158 264.176 <=400 Pass 3DH5 2.926 31.600 105 307.230 <=400 Pass v Page 32 o…

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Page 1 of 2 FCC ID: 2BKDH-MD-25 Page 2 of 2 FCC ID: 2BKDH-MD-25