2BKJD-IT109B017-UB700/800 2.5W Public Safety BDA

Attestation Letter - 2.911 (d)(5)(i)(ii) Date: 09.28, 2024 FCC ID: 2BKJD-IT109B017-UB To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046, USA We, DKK North America, Inc, as requested by FCC, are declaring that Section 2.911 (d)(5)(i)(ii) is being satisfied likes below to the FCC requirements to protect the nation`s networks and supply chains from equipment (“covered” equipment) according to FCC 22-84 and KDB 986446 D01. Section 2.911 (d)(5)(i)(ii)) 2.911 (d)(5)(i) We 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. 2.911 (d)(5)(ii) And, we certifies that one of following, ☒ 1. We are not identified on the Covered List and are not an affiliate or subsidiary of an entity identified on the Covered List. ☐ 2. We are identified on the Covered List as an entity producing “covered” equipment. But, we can be authorized since the reason as explained below. ☐ 3. We are an affiliate or subsidiary of an entity identified on the Covered List. But, we can be authorized since the reason as explained below. *Only one of paragraphs 1, 2 or 3 should be checked, if checked on paragraphs 2 or 3, the reason why it does not include the “covered” equipment. Sincerely yours, Name: Mark, Sunderland Title: Director Company Name: DKK North America, Inc

U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information DKK North America, Inc certifies that, DKK North America, Inc is our designated U.S. agent for service of process for the above referenced FCC Grantee Code 2BKJD. DKK North America, Inc accepts to maintain an agent 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. DKK North America, Inc accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for FCC Grantee Code 2BKJD. This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. Designated U.S. Agent information: Company name: DKK North America, Inc FCC ID: 2BKJD-IT109B017-UB Contact Name: Mark, Sunderland Street Address: 8105 Rasor Blvd, Plano, TX USA 75024 Email: [email protected] Applicant FRN: 0035856681 This agreement applies to all products applied by DKK North America, Inc for FCC Grantee code and is valid within the product life. Date: 08.28, 2024 Signed by (Printed Name/Title): Mark, Sunderland / Director

DKK North America, Inc 8105 Rasor Blvd, Suite 222, Plano, TX USA 75024 ____________________________________________________________________________ Date: 09.28, 2024 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road, Columbia, MD 21046 Subject: Letter for Warning Label Message FCC ID: 2BKJD-IT109B017-UB To Whom It Ma y Concern: Warning label messages will be also shown in online and point-of-sale marketing materials and on outside packaging of device per KDB 935210 D02 Signal Boosters Certification v04r02 in Section V clause (g). Sincerely yours, Name: Mark, Sunderland Title: Director Company Name: DKK North America, Inc

DKK North America, Inc 8105 Rasor Blvd, Suite 222, Plano, TX USA 75024 ____________________________________________________________________________ Date: 09.28, 2024 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mill s Road, Columbia, MD 21046 RE: Request of Confidentiality for FCC ID: 2BKJD-IT109B017-UB To Whom It May Concern: Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules (CFR 47), and Section 552 (b) (4) of the Freedom of Information Act, DKK North America, Inc. hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA 04-1705. This provision will give DKK North America, Inc. temporary confidentiality of commercially sensitive information prior to product release. The requested Confidential and Temporary Confidential exhibits are listed as follows: CONFIDENTIAL AND SHORT-TERM CONFIDENTIAL LIST Exhibit Description CONFIDENTIAL 1 Block Diagram 2 Operational Descriptions 3 Parts Lists and Tune-Up Procedure 4 Schematics SHORT-TERM CONFIDENTIAL 5 Internal Photos & External photo 6 Test-Setup Photos 7 User Manual The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. Sincerely yours, Name: Mark, Sunderland Title: Director Company Name: DKK North America, Inc

DKK North America, Inc 8105 Rasor Blvd, Suite 222, Plano, TX USA 75024 Date: 08.28, 2024 Feder al Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Attn : Reviewing Engineer RE: LETTER OF AGENT AUTHORIZATION f or FCC ID: 2BKJD-IT109B017-UB To wh om it may concern: We, th e undersigned, hereby authorize any individu al with in HC T Co.,Ltd . to act on ou r behal f 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 den ial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.862. We declar e tha t th e information provided to the FCC is true and correct to the best of our knowledg e (47 CFR 2.911(d)) and we hav e bee n informe d of th e grante e responsibilities (47 CFR 2.909) with regar d to certified equipment. We recogniz e tha t we are still responsible for the terms and conditions outlined in the HCT America Clien t Servic es Agreement. This agreement expir es on e yea r fro m th e curren t date. Sincerely yours, Name: Mark, Sunderland Title: Director Company Name: DKK North America, Inc

FCC & IC Label WARNING: This is NOT a CONSUMER device. It is designed for installation by an installer approved by an ISED licensee. You MUST have an ISED LICENCE or the express consent of an ISED licensee to operate this device. AVERTISSEMENT : Ce n’est PAS un appareil de consommation. Il est conçu pour être installé par un installateur approuvé par un titulaire de licence d’ISD. Vous DEVEZ avoir une LICENCE d’ISDE ou le consentement exprès d’un titulaire de licence d’ISDE pour utiliser cet appareil.

TEST REPORT FCC MPE Test for IT109B017CB Certification APPLICANT DKK North America, Inc. REPORT NO. HCT-RF-2409-FC004 DATE OF ISSUE September 30, 2024 Tested by Kyung Soo Kang Technical Manager Jong Seok Lee F-TP22-03(Rev.06) 1 / 9 The report shall not be (partly) reproduced except in full without approval of the laboratory. HCT CO., LTD. 2-6, 73, 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, Republic of Korea Tel. +82 31 645 6300 Fax. +82 31 645 6401 The report shall not be (partly) reproduced except in full without approval of the laboratory. HCT CO.,LTD. 2-6, 73, 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, Republic of Korea Tel. +82 31 645 6300 Fax. +82 31 645 6401 F-TP22-03 (Rev. 06) Page 2 of 9 TEST REPORT REPORT NO. HCT-RF-2409-FC004 DATE OF ISSUE September 30, 2024 A pplicant DKK North America, Inc. 8105 Rasor Blvd, Suite 222, Plano, TX USA 75024 Product Name Model Name 700/800 2.5W Public Safety BDA IT109B017CB FCC ID2BKJD-IT109B017-UB Date of TestJuly 10, 2024 ~ September 04, 2024 Location of Test굀 Permanent Testing Lab 굁 On Site Testing (Address: 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi- do, Republic of Korea) Test Standard UsedCFR 47 Part 2.1091 Test ResultsPASS Manufacturerinnertron 301, Harmony-ro, Yeonsu-gu, Incheon City 22014 Korea The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC004 F-TP22-03 (Rev. 06) Page 3 of 9 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 September 30, 2024 Initial Release Notice Content Engineering Statement: The measurements shown in this report were made in accordance with the procedures indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurements made, the equipment tested is capable of operation in accordance with the requirements of the FCC Rules under normal use and maintenance. The results shown in this test report only apply to the sample(s), as received, provided by the applicant, unless otherwise stated. The test results have only been applied with the test methods required by the standard(s). The laboratory is not accredited for the test results marked *. Information provided by the applicant is marked **. Test results provided by external providers are marked ***. When confirmation of authenticity of this test report is required, please contact www.hct.co.kr The test results in this test report are not associated with the ((KS Q) ISO/IEC 17025) accreditation by KOLAS (Korea Laboratory Accreditation Scheme) / A2LA (American Association for Laboratory Accreditation) that are under the ILAC (International Laboratory Accreditation Cooperation) Mutual Recognition Agreement (MRA). The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC004 F-TP22-03 (Rev. 06) Page 4 of 9 RF Exposure Statement 1. LIMITS According to §1.1310 and §2.1091 RF exposure is calculated. (B) Limits for General Population/Uncontrolled Exposures Frequency range (MHz) Electric field Strength (V/m) Magnetic field Strength (A/m) Power density (mW/cm²) Averaging time (minutes) 0.3 - 1.34 1.34 - 30 30 - 300 300 - 1500 1500 - 100.000 614 824/f 27.5   1.63 2.19/f 0.073   #) (100) #) (180/f²) 0.2 f/1500 1.0 30 30 30 30 30 F = frequency in MHz # = Plane-wave equivalent power density 2. MAXIMUM PERMISSIBLE EXPOSURE Prediction Prediction of MPE limit at a given distance S = PG/4πR² S = Power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC004 F-TP22-03 (Rev. 06) Page 5 of 9 3. RESULTS - Public Safety Broadband ᄧ Uplink, 1 Carrier Max Peak output Power at antenna input terminal 28.50 dBm Max Peak output Power at antenna input terminal 707.95 mW Prediction distance 90.00 cm Prediction frequency 788.00 MHz Antenna Gain(typical) 9.00 dBi Antenna Gain(numeric) 7.94 - Power density at prediction frequency(S) 0.0552 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 0.5253 mW/cm 2 - Public Safety Narrowband ᄧ Uplink, 1 Carrier Max Peak output Power at antenna input terminal 28.50 dBm Max Peak output Power at antenna input terminal 707.95 mW Prediction distance 90.00 cm Prediction frequency 799.00 MHz Antenna Gain(typical) 9.00 dBi Antenna Gain(numeric) 7.94 - Power density at prediction frequency(S) 0.0552 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 0.5327 mW/cm 2 - NPSPAC ᄧ Uplink, 1 Carrier Max Peak output Power at antenna input terminal 28.50 dBm Max Peak output Power at antenna input terminal 707.95 mW Prediction distance 90.00 cm Prediction frequency 806.00 MHz Antenna Gain(typical) 9.00 dBi Antenna Gain(numeric) 7.94 - Power density at prediction frequency(S) 0.0552 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 0.5373 mW/cm 2 The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC004 F-TP22-03 (Rev. 06) Page 6 of 9 - B/ILT; SMR ᄧ Uplink, 1 Carrier Max Peak output Power at antenna input terminal 28.50 dBm Max Peak output Power at antenna input terminal 707.95 mW Prediction distance 90.00 cm Prediction frequency 809.00 MHz Antenna Gain(typical) 9.00 dBi Antenna Gain(numeric) 7.94 - Power density at prediction frequency(S) 0.0552 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 0.5393 mW/cm 2 The report shall not be (partly) reproduce…

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TEST REPORT FCC Test for IT109B017CB Certification APPLICANT DKK North America, Inc. REPORT NO. HCT-RF-2409-FC003 DATE OF ISSUE September 30, 2024 Tested by Kyung Soo Kang Technical Manager Jong Seok Lee F-TP22-03(Rev.06) 1 / 103 The report shall not be (partly) reproduced except in full without approval of the laboratory. HCT CO., LTD. 2-6, 73, 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, Republic of Korea Tel. +82 31 645 6300 Fax. +82 31 645 6401 The report shall not be (partly) reproduced except in full without approval of the laboratory. HCT CO.,LTD. 2-6, 73, 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, Republic of Korea Tel. +82 31 645 6300 Fax. +82 31 645 6401 F-TP22-03 (Rev. 06) Page 2 of 103 TEST REPORT REPORT NO. HCT-RF-2409-FC003 DATE OF ISSUE September 30, 2024 A pplicant DKK North America, Inc. 8105 Rasor Blvd, Suite 222, Plano, TX USA 75024 Product Name Model Name 700/800 2.5W Public Safety BDA IT109B017CB FCC ID 2BKJD-IT109B017-UB Output Power Uplink: 27 dBm, Downlink: 34 dBm Date of TestJuly 10, 2024 ~ September 10, 2024 Location of Test굀 Permanent Testing Lab 굁 On Site Testing (Address: 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi- do, Republic of Korea) Test Standard UsedCFR 47 Part 2, Part 90 Test ResultsPASS Manufacturerinnertron 301, Harmony-ro, Yeonsu-gu, Incheon City 22014 Korea The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC003 F-TP22-03 (Rev. 06) Page 3 of 103 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 September 30, 2024 Initial Release Notice Content Engineering Statement: The measurements shown in this report were made in accordance with the procedures indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurements made, the equipment tested is capable of operation in accordance with the requirements of the FCC Rules under normal use and maintenance. The results shown in this test report only apply to the sample(s ), as received, provided by the applicant, unless otherwise stated. The test results have only been applied with the test methods required by the standard(s). The laboratory is not accredited for the test results marked *. Information provided by the applicant is marked **. Test results provided by external providers are marked ***. When confirmation of authenticity of this test report is required, please contact www.hct.co.kr The test results in this test report are not associated with the ((KS Q) ISO/IEC 17025) accreditation by KOLAS (Korea Laboratory Accreditation Scheme) / A2LA (American Association for Laboratory Accreditation) that are under the ILAC (International Laboratory Accreditation Cooperation) Mutual Recognition Agreement (MRA). The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC003 F-TP22-03 (Rev. 06) Page 4 of 103 CONTENTS 1. GENERAL INFORMATION 5 1.1. APPLICANT INFORMATION 5 1.2. PRODUCT INFORMATION 5 1.3. TEST INFORMATION 5 2. FACILITIES AND ACCREDITATIONS 6 2.1. FACILITIES 6 2.2. EQUIPMENT 6 3. TEST SPECIFICATIONS 7 3.1. STANDARDS 7 3.2. ADDITIONAL DESCRIPTIONS ABOUT TEST 8 3.3. MEASUREMENTUNCERTAINTY 10 3.4. STANDARDS ENVIRONMENTAL TEST CONDITIONS 10 3.5. TEST DIAGRAMS 11 4. TEST EQUIPMENTS 13 5. TEST RESULT 14 5.1. AGC THRESHOLD 14 5.2. OUT-OF-BAND REJECTION 16 5.3. OCCUPIED BANDWIDTH 19 5.4. INPUT-VERSUS-OUTPUT SIGNAL COMPARISON 40 5.5. INPUT/OUTPUT POWER AND AMPLIFIER/BOOSTER GAIN 55 5.6. NOISE FIGURE 59 5.7. OUT-OF-BAND/OUT-OF-BLOCK EMISSIONS AND SPURIOUS EMISSIONS 63 5.8. RADIATED SPURIOUS EMISSIONS 93 5.9. FREQUENCY STABILITY 96 6. Annex A_EUT AND TEST SETUP PHOTO 103 The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC003 F-TP22-03 (Rev. 06) Page 5 of 103 1. GENERAL INFORMATION 1.1. APPLICANT INFORMATION Company Name DKK North America, Inc. Company Address 8105 Rasor Blvd, Suite 222, Plano, TX USA 75024 1.2. PRODUCT INFORMATION EUT Type 700/800 2.5W Public Safety BDA EUT Serial Number 24IT08000000 Power Supply 100-240 VAC, 50/60 Hz Frequency Range Band Name Uplink (MHz) Downlink (MHz) FirstNet 788 ~ 798 758 ~ 768 Public Safety Narrowband 799 ~ 805 769 ~ 775 NPSPAC 806 ~ 809 851 ~ 854 B/ILT; SMR 809 ~ 816 854 ~ 861 Tx Output Power Uplink: 27 dBm, Downlink: 34 dBm Antenna Peak Gain Uplink: 9.0 dBi, Downlink: 3.5 dBi 1.3. TEST INFORMATION FCC Rule Parts CFR 47 Part 90 Measurement Standards KDB 935210 D05 v01r04, KDB 971168 D01 v03r01, ANSI C63.26-2015 Test Location 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, Republic of Korea The report shall not be (partly) reproduced except in full without approval of the laboratory. Report No. HCT-RF-2409-FC003 F-TP22-03 (Rev. 06) Page 6 of 103 2. FACILITIES AND ACCREDITATIONS 2.1. FACILITIES The SAC(Semi-Anechoic Chamber) and conducted measurement facility used to collect the radiated data are located at the 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA. The site is constructed in conformance with the requirements of ANSI C63.4. (Version :2014) and CISPR Publication22. Detailed description of test facility was submitted to the Commission and accepted dated March 11, 2024 (CAB identifier: KR0032). 2.2. EQUIPMENT Radiated emissions are measured with one or more of the following types of linearly polarized antennas: tuned dipole, bi-conical, log periodic, bi-log, and/or ridged waveguide, horn. Spectrum analyzers with pre-selectors and quasi-peak detectors are used to perform radiated measurements. Calibrated wideband preamplifiers, coaxial cables, and co…

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