2ARRE-GD900Digital Portable Radio

335100417_RevA User's Manual Digital Radio 1 To Users Thank you for purchasing our product! This Manual is designed to make you quickly grasp use of this device. In order to avoid physical injury or property loss due to improper operation, please read this Manual carefully before using this device. Notice The device meets the requirements of FCC PART 90, PART 97 and PART 15. Local laws and regulations shall be complied with when setting up or using the equipment, and corresponding qualifications and relevant procedures shall be obtained if necessary. Consulting the relevant authorities is suggested. 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. If 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. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: Using Tips 2 (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. ISEDC RSS warning This product meets the applicable Industry Canada technical specifications. / Le présent matériel est conforme aux specifications techniques applicables d’Industrie Canada. This device complies with ISEDC RSS standard (s). Operation is subject to the following two conditions: (1) this device may not cause interference,and (2) this device must accept any interference,including interference that may cause undesiredoperation of the device. Le présent appareil est conforme aux CNR d'ISEDCapplicables aux appareils radio. L'exploitation est autorisée aux deux conditionssuivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Using TipsUsing Tips 3 Using TipsUsing Tips RF Radiation Information 1. This product is limited to occupational applications that can meet RF energy radiation requirements. The user must be fully aware of the RF radiation hazards and can take corresponding measures to meet the RF radiation limitation requirements. 2. Radio frequency (RF) refers to the electromagnetic frequency that can be radiated into space. It is a widely used technology in the fields of communication, medical treatment, and food processing. It will generate certain RF radiation during use. Safety Information In order to use the radio safely and efficiently, please read the following safety information: · The radio can only be maintained by professional technicians. Do not disassemble the radio without permission. · Only the batteries and chargers specified by our company can be used. · To avoid problems caused by electromagnetic interference and electromagnetic compatibility, please turn off the radio in places where the "Please turn off the radio" sign is displayed, such as hospitals and other health care places. When taking the flight, please turn off the radio if the crew requests to do so. · In vehicles with airbags, do not place the radio in the area where airbag deployment may be involved. · Please turn off the radio before entering flammable or explosive environment. · Do not replace or charge the battery in a flammable or explosive environment. 4 Using TipsUsing Tips · Please turn off the radio before approaching the blasting area and the detonator area. · Do not use the radio with damaged antenna. A damaged antenna may cause minor burns when it comes into contact with the skin. · Do not expose the radio to direct sunlight for a long time or place it near the heating Radio. · If you wear a portable radio, make sure the antenna is at least 2.5 cm away from your body when the radio is transmitting. WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. CAUTION: Use the approved charger to charge the battery. The remaining lithium-ion battery is limited to 30% pursuant to the new lithium battery shipment regulation approved by International Air Transport Association (IATA). Before use, charge the battery. It is recommended that the radio remain powered off during charging. Use of battery not recommend or replaced with incorrect type of battery may result in a risk of fire and explosion or personal injury. Maximum ambient temperature around the power supply equipment including charger must not exceed 40 °C (104ºF) and device operating temperature not exceed 55 °C (131ºF). RF Exposure Compliance and Control Guidelines and Operating Instructions To control your exposure and ensure compliance with the occupational/ controlled environment exposure limits always adhere to the following procedures. Guidelines: • Do not remove the RF Exposure Label from the device. • User awareness instructions should accompany device when 5 Using TipsUsing Tips transferred to other users. • Do not use this device if the operational requirements described herein are not met. Operating Instructions: • T…

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GOCOM Technology Co., Ltd. UNIT 12, 14/F, LIPPO SUN PLAZA, 28 CANTON ROAD TSIM SHA TSUI, KOWLOON, Hong Kong, China Tel: +8618750555801 Fax: 0085223744662 E-mail: [email protected] Date: 2020-4-13 The RF chip, model: BES2000, installed in our product Digital Portable Radio (Model number:GD900, FCC ID: 2ARRE-GD900, IC: 24523-GD900)which supports Bluetooth BDR(GFSK), EDR(π/4-DQPSK, 8DPSK), BLE functions. And thischip will not support/enable the BLE, BLE function was disabled by the manufacturer inthe software. Sincerely, Signature: Snow Huang Sales Executive

QA-FR-170-B GOCOM Technology Co.,Ltd. UNIT12, 14/F, LIPPO SUN PLAZA,28 CANTON ROAD,TSIM SHA TSUI, KOWLOON, Hong Kong, China Tel: +8618750555801 Email: [email protected] Fax: 0085223744662 Date: 2020-05-05 FCC Authorization FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We (GOCOM Technology Co.,Ltd.), the undersigned, Hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratory Corporation on our behalf shall have the same effect as our own action. We (GOCOM Technology Co.,Ltd.),the undersigned, 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. 862(a). This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Snow Huang Sales Executive

GOCOM Technology Co.,Ltd. UNIT12, 14/F, LIPPO SUN PLAZA,28 CANTON ROAD,TSIM SHA TSUI, KOWLOON, Hong Kong, China Tel: +8618750555801 Email: [email protected] Fax: 0085223744662 Date: 2020-04-29 FCC Confidential Authorization FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Roa Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ARRE-GD900 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (GOCOM Technology Co.,Ltd.) hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description • Parts List/Tune up procedure (for licensed devices) The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Snow Huang Sales Executive

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Charger

EXHIBIT A - FCC ID LABEL AND LOCATION Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS BT ant

Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “★”. BACL is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. FCC PART 15.247 TEST REPORT For GOCOM Technology Co.,Ltd. UNIT 12, 14/F, LIPPO SUN PLAZA, 28 CANTON ROAD TSIM SHA TSUI, KOWLOON, Hong Kong, China FCC ID: 2ARRE-GD900 R e p o r t T y p e : O r i gi n a l R e p o r t P r o d u c t T y p e : D i gi t a l P o r t a b l e R a d i o Report Number: RSZ200413811-00B Report Date: 2020-05-25 Reviewed By: Jimmy Xiao RF Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Shenzhen) 6/F., West Wing, Third Phase of Wanli Industrial Building, Shihua Road, Futian Free Trade Zone, Shenzhen, Guangdong, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B FCC Part 15.247 Page 2 of 29 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 SPECIAL ACCESSORIES ................................................................................................................................................. 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 6 EXTERNAL I/O CABLE.................................................................................................................................................. 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 TEST EQUIPMENT LIST ........................................................................................................................................... 9 FCC§15.247 (i), §1.1307 (b) (1) & §2.1093 – RF EXPOSURE ..................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 11 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 EUT SETUP ................................................................................................................................................................ 12 EMI TEST RECEIVER SETUP ....................................................................................................................................... 12 TEST PROCEDURE ...................................................................................................................................................... 12 CORRECTED FACTOR & MARGIN CALCULATION ...........................................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Channel 20db EBW[MHz] Limit[MHz] Verdict DH1 Ant1 2402 1.041 --- PASS 2441 1.041 --- PASS 2480 1.041 --- PASS 2DH1 Ant1 2402 1.227 --- PASS 2441 1.248 --- PASS 2480 1.227 --- PASS 3DH1 Ant1 2402 1.215 --- PASS 2441 1.215 --- PASS 2480 1.215 --- PASS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Test Graphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Channel OCB [MHz] Limit[MHz] Verdict DH1 Ant1 2402 0.971 --- PASS 2441 0.971 --- PASS 2480 0.971 --- PASS 2DH1 Ant1 2402 1.172 --- PASS 2441 1.169 --- PASS 2480 1.169 --- PASS 3DH1 Ant1 2402 1.151 --- PASS 2441 1.151 --- PASS 2480 1.151 --- PASS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Test Graphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix C: Maximum conducted Peak output power Test Result TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict DH1 Ant1 2402 2.02 <=20.97 PASS 2441 1.49 <=20.97 PASS 2480 1.52 <=20.97 PASS 2DH1 Ant1 2402 4.43 <=20.97 PASS 2441 3.93 <=20.97 PASS 2480 3.99 <=20.97 PASS 3DH1 Ant1 2402 5.22 <=20.97 PASS 2441 4.71 <=20.97 PASS 2480 4.77 <=20.97 PASS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Test Graphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix D: Carrier frequency separation Test Result TestMode Antenna Channel Result[MHz] Limit[MHz] Verdict DH1 Ant1 Hop 1.003 >=0.694 PASS 2DH1 Ant1 Hop 1 >=0.832 PASS 3DH1 Ant1 Hop 1 >=0.810 PASS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Test Graphs DH1_Ant1_Hop 2DH1_Ant1_Hop 3DH1_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix E: Time of occupancy Test Result TestMode Antenna Channel BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Ant1 Hop 0.41 180 0.073 <=0.4 PASS DH3 Ant1 Hop 1.66 140 0.232 <=0.4 PASS DH5 Ant1 Hop 2.90 100 0.29 <=0.4 PASS 2DH1 Ant1 Hop 0.42 190 0.079 <=0.4 PASS 2DH3 Ant1 Hop 1.66 80 0.133 <=0.4 PASS 2DH5 Ant1 Hop 2.90 90 0.261 <=0.4 PASS 3DH1 Ant1 Hop 0.42 140 0.058 <=0.4 PASS 3DH3 Ant1 Hop 1.66 80 0.133 <=0.4 PASS 3DH5 Ant1 Hop 2.91 70 0.203 <=0.4 PASS Note 1：A period time=0.4*79=31.6(S), Result=BurstWidth*Totalhops Note 2: Totalhops=Hopping Number in 3.16s*10 Note 3: Hopping Number in 3.16s=Total of highest signals in 3.16s(Second high signals were other channel) Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Test Graphs DH1_Ant1_Hop DH3_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B DH5_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 2DH1_Ant1_Hop 2DH3_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 2DH5_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 3DH1_Ant1_Hop 3DH3_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 3DH5_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix F: Number of hopping channels Test Result TestMode Antenna Channel Result[Num] Limit[Num] Verdict DH1 Ant1 Hop 79 >=15 PASS 2DH1 Ant1 Hop 79 >=15 PASS 3DH1 Ant1 Hop 79 >=15 PASS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Test Graphs DH1_Ant1_Hop 2DH1_Ant1_Hop 3DH1_Ant1_Hop Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B Appendix G: Band edge measurements Test Graphs DH1_Ant1_Low_2402 DH1_Ant1_High_2480 DH1_Ant1_Low_Hop_2402 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B DH1_Ant1_High_Hop_2480 2DH1_Ant1_Low_2402 2DH1_Ant1_High_2480 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 2DH1_Ant1_Low_Hop_2402 2DH1_Ant1_High_Hop_2480 3DH1_Ant1_Low_2402 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200413811-00B 3DH1_Ant1_High_2480 3DH1_Ant1_Low_Hop_2402 3DH1_Ant1_High_Hop_2480

EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions - Front View Conducted Emissions - Side View Radiated Emissions View (Below 1 GHz) Radiated Emissions View (Above 1 GHz)