W6UHM25GFBTDDDAS

Confidential & Proprietary 1/39 HERCULES (Alliance 5W Remote Unit) User Manual SOLiD, Inc. 10,9th Floor, SOLiD Space220 Pangyoyeok-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea 393-400 Tel : +82-31-627-6290 Fax : +82-31-627-6209 Confidential & Proprietary 2/39 REVISION HISTORY Version Issue Date No. of Pages Initials Details of Revision Changes V 1.0 September. 07, 2014 Original V1.1 June 29, 2017 all Update Change the model name from AWS-1_M to AWS13_M (Updated RDU CPU Firmware) V1.2 Sep 9, 2017 37,38 Update Change name of Gain item Gain[dB] to Gain[dB] (Only RU) V1.3 June 26, 2019 all Update Add the new band module, 600LTE V1.4 May 13, 2021 all Update Add the new band module, 2500_FB_TDD Technical Support SOLiD serial numbers must be available to authorize technical support and/or to establish a return authorization for defective units. The serial numbers are located on the back of the unit, as well as on the box in which they were delivered. Additional support information may be obtained by accessing the SOLiD Tehcnology, Inc. website at www.solid.co.kr or send emailat [email protected] This manual is produced by Global Business Division Business Team 1. Printed in Korea. Confidential & Proprietary 3/39 Contents Section1 Safety & Certification Notice ................................................................................. 5 Section2 Introduction .......................................................................................................9 2.1 Purpose ............................................................................................................ 10 2.2 HERCULES ................................................................................................................. 11 Section3 Functional Description ....................................................................................12 3.1 General ............................................................................................................ 13 3.2 Component of HERCULES Remote Unit ................................................................... 14 3.3 Dimension ..............................................................................................................16 Section4 System Installation .......................................................................................... 17 4.1 Remote Unit Installation ........................................................................................19 4.1.1 Remote Unit Enclosure installation ....................................................................... 19 4.1.2 How to expand ADD ON ROU at the Remote Unit ............................................... 23 4.1.3 Remote Unit Power Cabling ..................................................................................25 4.1.4 Remote Unit Ground cabling ................................................................................. 26 4.1.5 Optical Cabling ........................................................................................................... 28 4.1.6 Mounting of MRDU .............................................................................................. 30 Section5 System Specifications .......................................................................................... 35 5.1 Physical Specifications ............................................................................................... 36 5.2 RF performance ........................................................................................................... 37 5.3 Certification ........................................................................................................... 38 Confidential & Proprietary 4/39 Contents of Figure Figure 3.1 – Remote Unit Block Diagram..................................................................... 13 Figure 3.2 – Inside of Remote Unit ......................................................................... 14 Figure 3.3 – Remote Unit Dimension ........................................................................... 16 Figure 4.1 – Exterior of Remote Unit ........................................................................... 19 Figure 4.2 – Dimension used to install REMOTE UNIT on the WALL ............................ 20 Figure 4.3 – Procedures of installation ........................................................................ 21 Figure 4.5 – Connection diagram between Remote Unit and ADD ON ROU (DC type) .............................................................................................................. 24 Figure 4.6 – Location of Ground Terminal ......................................................................... 26 Figure 4.7 – Information of Terminal .................................................................................. 26 Figure 4.8 – How to install Ground Terminal ..................................................................... 27 Figure 4.9 – Location of Optical Connector ............................................................. 28 Figure 4.10 – Information ofOptical Connector .......................................................... 28 Figure 4.11 – How to install Optical Cabling................................................................ 29 Figure 4.12 – Location of MRDU ................................................................................. 30 Figure 4.13 – How to mount MRDU ............................................................................ 31 Figure 4.14 – How to mount FAN Unit ........................................................................ 32 Figure 4.15 – How to mount FAN Unit ........................................................................ 33 Confidential & Proprietary 5/39 Section1 Safety & Certification Notice Confidential & Proprietary 6/39 “Only qualified personnel should handle the DAS equipment. Any person involved in installation or service of the DAS should understand and follow these safety guidelines.” -…

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SOLiD, Inc. 10,9th Floor, SOLiD Space 220 Pangyoyeok-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea 463-400 Tel : +82-31-627-6290 Fax : +82-31-627-6209 ____________________________________________________________________________ Date: May 20, 2021 Federal Communications Com mission Authorization and Evaluation Division 7435 Oakland Mills Road, Columbia, MD 21046 Subject: Letter for Warning Label Message FCC ID: W6UHM25GFBTDD To Whom It May Concern: Warning label messages will be also shown in online and point-of-sale marketing materials and on outside packaging of device per K DB 935210 D02 Signal Boosters Certification v04r02 in Section IV clause. Best Regards Contact Name : Yong chul Kim E-mail : [email protected]

Date : Nov. 9, 2017 Rev : 2.3 FCC Agent Authorization Letter HACS-F004 FCC Agent Authorization Letter HCT America LLC ([email protected]) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC Date : Nov. 9, 2017 Rev : 2.3 REVISION TABLE Rev Description of Change Date Approved 1.0 Original Release(Obsolete) 06/14/2012 QM 2.0 Updated template(Obsolete) 10/01/2012 QM 2.1 Updated address(Obsolete) 01/10/2014 QM 2.2 Updated address 11/18/2016 QM 2.3 Fixed Typo “Agent” 11/09/2017 QM HACS-F004 FCC Agent Authorization Letter HCT America LLC ([email protected]) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 2 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC SOLiD, Inc. DATE : May 20, 2021 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To w hom it may concern: Subjec t : FCC Agent Authorization Letter for FCC ID : W6UHM25GFBTDD We, the undersi gned, hereby authorize HCT CO., LTD. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by HCT CO., LTD. on our behalf shall have the same effect as acts of our own. We, the undersi gned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). We recognize that we are still responsible for the terms and conditions outlined in the HCT America Client Services Agreement. This authorization is valid until further written notice from the applicant. Sincerely, Signed by: Company Name : SOLiD, Inc. Company Address : 10,9th Floor, SOLiD Space, Pangyoyeok-ro 220, Bundang-gu, Seongnam-si, G yeonggi-do, S outh Korea Contact Person Name/Title (in print) : Yong chul Kim / Manager E-mail : [email protected] HACS-F004 FCC Agent Authorization Letter Rev : 2.3

Date : Nov. 09, 2017 Rev : 3.0 FCC Confidentiality Request Letter HACS-F003 FCC Confidentiality Request Letter HCT America LLC ([email protected]) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC Date : Nov. 09, 2017 Rev : 3.0 REVISION TABLE Rev Description of Change Date Approved 1.0 Original Release(Obsolete) 06/14/2012 QM 2.0 Updated template(Obsolete) 10/01/2012 QM 2.1 Updated address(Obsolete) 01/10/2014 QM 2.2 Updated address 11/18/2016 QM 3.0 Updated LTC and STC Confidentiality table 11/09/2017 QM HACS-F003 FCC Confidentiality Request Letter HCT America LLC ([email protected]) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 2 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC SOLiD, Inc. DATE : May 20, 2021 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD SUBJECT : Request for Confidentiality for FCC ID : W6UHM25GFBTDD We hereby request confidential treatment of the information accompanying this application as outlined below: LONG-TERM AND SHORT-TERM CONFIDENTIAL LIST LONG-TERM CONFIDENTIAL Exhibit Description 1 Block Diagram 2 Operational Description 3 Parts List 4 Schematics 5 Tune-up Procedure SHORT-TERM CONFIDENTIAL (180 DAYS) 6 External Photos 7 Internal Photos 8 Test -Setup Photos 9 User’s Manual The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 & 0.459 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Signed by: Company Name : SOLiD, Inc. Company Address : 10,9th Floor, SOLiD Space, Pangyoyeok-ro 220, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea Contact Person Name/Title (in print) : Yong chul Kim/Manager HACS-F003 FCC Confidentiality Request Letter Rev : 3.0

FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １ of 8 EXTERNAL PHOTOGRAPHS FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２ of 8 ■ EXTERNAL PHOTO(LEFT) FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ３ of 8 ■ EXTERNAL PHOTO(RIGHT) FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ４ of 8 ■ EXTERNAL PHOTO(REAR) FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ５ of 8 ■ EXTERNAL PHOTO(FRONT) FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ６ of 8 ■ EXTERNAL PHOTO(BOTTOM) FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ７ of 8 ■ EXTERNAL PHOTO(TOP) FCC ID: W6UHM25GFBTDD HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ８ of 8 ■ EXTERNAL PHOTO EUT FCC ID : W6UHM25GFBTDD

FCC label information ① ② ③ FCC labellocation ① ③ ②

FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １ of 27 INTERNAL PHOTOGRAPHS FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２ of 27 [Main PCB TOP] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ３ of 27 [Main PCB Bottom] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ４ of 27 [Main PBA Top] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ５ of 27 [Main PBA Bottom] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ６ of 27 [HPA Internal] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ７ of 27 [HPA_Top] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ８ of 27 [HPA_Bottom] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ９ of 27 [UDC PCB Top_1] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １０ of 27 [UDC PCB Top_2] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １１ of 27 [UDC PCB Top_3] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １２ of 27 [UDC PCB Bottom_1] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １３ of 27 [UDC PCB Bottom_2] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １４ of 27 [UDC PCB Bottom_3] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １５ of 27 [UDC PBA Top_1] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １６ of 27 [UDC PBA Top_2] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １７ of 27 [UDC PBA Top_3] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １８ of 27 [UDC PBA Bottom_1] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １９ of 27 [UDC PBA Bottom_2] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２０ of 27 [UDC PBA Bottom_3] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２１ of 27 [UDC Internal Top_1] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２２ of 27 [UDC Internal Top_2] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２３ of 27 [UDC Internal Top_3] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２４ of 27 [UDC Internal Top_4 (DPD)] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２５ of 27 [UDC Top] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２６ of 27 [UDC Bottom] FCC ID: W6UHM25GFBTDD HCT CO., LTD 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２７ of 27 [UDC Top_4 (DPD) Cover]

TEST REPORT FCC MPE Test for MRDU_2500_FB_TDD Certification APPLICANT SOLiD, Inc. REPORT NO. HCT-RF-2105-FC004 DATE OF ISSUE May 20, 2021 Tested by Kyung Soo Kang Technical Manager Jong Seok Lee F-TP22-03(Rev.03) HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 F ax. +82 31 645 6401 1 / 8 F-TP22-03 (Rev. 03) Page 2 of 8 HCT Co., Ltd. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 Fax. +82 31 645 6401 TEST REPORT FCC MPE Test for MRDU_2500_FB_TDD REPORT NO. HCT-RF-2105-FC004 DATE OF ISSUE May 20, 2021 Additional Model - A pplicantSOLiD, Inc. 10, 9th Floor, SOLiD Space, Pangyoyeok-ro 220, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-400, South Korea Eut Type Model Name DAS MRDU_2500_FB_TDD FCC ID W6UHM25GFBTDD The result shown in this test report refer only to the sample(s) tested unless otherwise stated. This test results were applied only to the test methods required by the standard. Report No. HCT-RF-2105-FC004 F-TP22-03 (Rev. 03) Page 3 of 8 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 May 20, 2021 Initial Release 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 report shall not be reproduced except in full(only partly) without approval of the laboratory. Report No. HCT-RF-2105-FC004 F-TP22-03 (Rev. 03) Page 4 of 8 RF Exposure Statement 1. Limit According to §1.1310, §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 Report No. HCT-RF-2105-FC004 F-TP22-03 (Rev. 03) Page 5 of 8 3. RESULTS 3.1 MPE calculation for standalone operations - BRS/EBS United ˊ LTE 20 MHz (Downlink) Max Peak output Power at antenna input terminal 38.50 dBm Max Peak output Power at antenna input terminal 7079.46 mW Prediction distance 170.00 cm Prediction frequency 2550.44 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.9770 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 - BRS/EBS United ˊ 5G NR 20 MHz (Downlink) Max Peak output Power at antenna input terminal 38.50 dBm Max Peak output Power at antenna input terminal 7079.46 mW Prediction distance 170.00 cm Prediction frequency 2550.44 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.9770 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 Report No. HCT-RF-2105-FC004 F-TP22-03 (Rev. 03) Page 6 of 8 - BRS/EBS United ˊ 5G NR 40 MHz (Downlink) Max Peak output Power at antenna input terminal 38.50 dBm Max Peak output Power at antenna input terminal 7079.46 mW Prediction distance 170.00 cm Prediction frequency 2550.44 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.9770 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 - BRS/EBS United ˊ 5G NR 60 MHz (Downlink) Max Peak output Power at antenna input terminal 38.50 dBm Max Peak output Power at antenna input terminal 7079.46 mW Prediction distance 170.00 cm Prediction frequency 2550.44 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.9770 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 - BRS/EBS United ˊ 5G NR 80 MHz (Downlink) Max Peak output Power at antenna input terminal 38.50 dBm Max Peak output Power at antenna input terminal 7079.46 mW Prediction distance 170.00 cm Prediction frequency 2550.44 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.9770 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 Report No. HCT-RF-2105-FC004 F-TP22-03 (Rev. 03) Page 7 of 8 - BRS/EBS United ˊ 5G NR 100 MHz (Downlink) Max Peak output Power at antenna input terminal 38.50 dBm Max Peak output Power at antenna input terminal 7079.46 mW Prediction distance 170.00 cm Prediction frequency 2550.44 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.9770 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 Report No. HCT-RF-2105-FC004 F-TP22-03 (Rev. 03) Page 8 of 8 3.2 Simultaneous band emission conditions - BRS/EBS United ˊ LTE 20 MHz (Downlink) Max Peak output Power at antenna input terminal 35.50 dBm Max Peak output Power at antenna input terminal 3548.13 mW Prediction distance 170.00 cm Prediction frequency 2640.00 MHz Antenna Gain(typical) 17.00 dBi Antenna Gain(numeric) 50.12 - Power density at prediction frequency( S) 0.4897 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 - BRS/EBS Uni…

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TEST REPORT FCC Test for MRDU_2500_FB_TDD Certification APPLICANT SOLiD, Inc. REPORT NO. HCT-RF-2105-FC003 DATE OF ISSUE May 20, 2021 Tested by Kyung Soo Kang Technical Manager Jong Seok Lee F-TP22-03(Rev.03) HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 F ax. +82 31 645 6401 1 / 74 F-TP22-03 (Rev. 03) Page 2 of 74 HCT Co., Ltd. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 Fax. +82 31 645 6401 TEST REPORT FCC Test for MRDU_2500_FB_TDD REPORT NO. HCT-RF-2105-FC003 DATE OF ISSUE May 20, 2021 Additional Model - A pplicantSOLiD, Inc. 10, 9th Floor, SOLiD Space, Pangyoyeok-ro 220, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-400, South Korea Eut Type Model Name DAS MRDU_2500_FB_TDD FCC ID W6UHM25GFBTDD Output Power37 dBm Date of TestApril 29, 2021~ May 12, 2021 FCC Rule Parts:CFR 47 Part 2, Part 27 The result shown in this test report refer only to the sample(s) tested unless otherwise stated. This test results were applied only to the test methods required by the standard. Report No. HCT-RF-2105-FC003 F-TP22-03 (Rev. 03) Page 3 of 74 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 May 20, 2021 Initial Release 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 report shall not be reproduced except in full(only partly) without approval of the laboratory. Report No. HCT-RF-2105-FC003 F-TP22-03 (Rev. 03) Page 4 of 74 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 12 5. TEST RESULT 13 5.1. AGC THRESHOLD 13 5.2. OUT-OF-BAND REJECTION 15 5.3. INPUT-VERSUS-OUTPUT SIGNAL COMPARISON 17 5.4. INPUT/OUTPUT POWER AND AMPLIFIER/BOOSTER GAIN 33 5.5. OUT-OF-BAND/OUT-OF-BLOCK EMISSIONS AND SPURIOUS EMISSIONS 40 5.6. RADIATED SPURIOUS EMISSIONS 70 6. Annex A_EUT AND TEST SETUP PHOTO 74 Report No. HCT-RF-2105-FC003 F-TP22-03 (Rev. 03) Page 5 of 74 1. GENERAL INFORMATION 1.1. APPLICANT INFORMATION Company Name SOLiD, Inc. Company Address 10, 9th Floor, SOLiD Space, Pangyoyeok-ro 220, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-400, South Korea 1.2. PRODUCT INFORMATION EUT Type DAS EUT Serial Number R25M000001 Power Supply AC 100-240V, 50/60Hz DC -48V Frequency Range Band Name Downlink (MHz) BRS/EBS 2 496 ~ 2 690 Tx Output Power 37 dBm Antenna Peak Gain 17 dBi 1.3. TEST INFORMATION FCC Rule Parts CFR 47 Part 2, Part 27 Measurement Standards KDB 935210 D05 v01r04, KDB 971168 D01 v03r01, ANSI C63.26-2015 Test Location HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA Report No. HCT-RF-2105-FC003 F-TP22-03 (Rev. 03) Page 6 of 74 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 Publication 22. Detailed description of test facility was submitted to the Commission and accepted dated April 02, 2018 (Registration Number: 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 qua…

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