2A3OORT628STwo Way Radio

RT628S User Manual EN(01~12) Two Way Radio Key Functions Display Icon Instructions 1 2 3 4 11 5 6 7 8 9 10 1. PTT 2.Menu/Power Key 3.SCAN/UP Key 4.Speaker 5.Accessories/Charging Jack 6.LCD Display 7.Safe Mode Key 8.Call Tone/Key Lock 9.Monitor/DOWN Key 10.Microphone 11.Antenna Channel Number Call Tone CTCSS/DCS Code Battery Indicate Key Lock Roger Beep Scan Power Transmitting/Receiving VOX Battery Installation and Function Your device uses 3 x AA alkaline batteries. 1.Place the back of the device to you, there is a hidden buckle to turn on/off the battery cover. 2.Install 3 x AA alkaline batteries as shown inside of the battery case. 3.Reinstall the battery cover and lock it down, the batteries can be replaced with NI-MH battery. Battery Power Measurement The battery capacity is full, the battery power is high . When the battery displays 1 grid, the device is in low battery mode and makes a low battery warning in the form of the prompt. Note: Take out the battery from the radio to save it. The battery may become corrosion by the time and do the forever damage to your device. -Don’t mix the old/new/alkaline/ NI-MH batteries together to use. -Charge the provided NI-MH battery every 3 months when not using the radio. Turn ON/OFF the Device After installing the batteries, the device is turned on and has a prompt. LCD display will briefly display all function icons, then it will display the available channel and CTCSS/DCS. Press the Power key, the radio is turned off. Set Volume -Press UP key to increase the volume. -Press the DOWN key to decrease the volume. -The magnitude of the volume is indicated by the displayed number 1-16. Set Channel 1.Shortly press the Menu key and the current channel flashes. 2.Press the UP key or DOWN key to choose channel number. 3.Press the PTT key to confirm and save channel settings. Communication When communicating, all the devices of the group set the same channel number and CTCSS/DCS code; When you start to communicate, please keep 2-3inch between the device and the mouth. Press the PTT key to talk. When you finish talking, release the PTT key. (Press the key to transmit, release the key to receive). Featured Function CTCSS/DCS Code The distribution of the CTCSS/DCS code can decrease the interference between radios, but radios can’t communicate with each other with different CTCSS/DCS codes. To ensure your private communication, each channel has 0-121 CTCSS/DCS codes to be set. 1.Shortly press the NENU/Power key twice or until the CTCSS/DCS code starts to flash. 2.Press the UP key or DOWN key to choose code 0-121 or 121-0. 3.Press the PTT key to save code settings. You can use the procedure to set different CTCSS/DCS codes for each channel. Note: if you want to communicate with the other device without setting CTCSS/DCS codes, you must set your CTCSS/DCS code to 0. TOT To prevent accidental transmission or occupying channel for a long time, if you press the PTT key to continuously transmit for 60s, the device will make a continuous warning tone and stop transmitting. Key Lock To prevent accidentally changing the setting of the radio, press the CALL/Key Lock for 3s or until the key lock icon is displayed. At this time, you can turn on/off the radio, adjust the volume, receive, transmit, transmit call tone and monitor channel. But other functions are locked. To unlock the device, press the CALL/Key Lock for 3s or until the key lock icon is not displayed. Scan Channel Use scan to monitor the reeving of the channel or find the people who accidentally change the channel in your group. Press the SCAN key for 3s and the scan icon appears, the radio starts to scan. When detecting the channel activities, you can hear the receiving. To answer, press the PTT key in 5s and the channel will be confirmed. Enter the Scan Again If the scan stops on the unwanted channel, shortly press the SCAN key, the scan restores and enters next effective channel scan. Set and Send Call Tone Your device can send different call tones to other devices in your group to remind the people you want to communicate. Set Call Tone 1.Press the MENU key until the call tone number flashes. 2.Press the UP key or DOWN key to choose the needed call tone. 3.Press the PTT key to confirm the selected call tone. Send to call tone other devices, the device needs to set the same channel and CTCSS/DCS codes as yours, then press the call tone key to call. Note: the call tone is set to 0, all call tones are ineffective. VOX Function The VOX function allows the user to start transmitting towards the microphone without pressing the PTT key. 1. To turn on the VOX function, press the MENU key until the VOX icon appears, and the current setting flashes (OF,1,2,3). 2. Press the UP key or DOWN key to choose OFF or sensitivity level. 3. Press the PTT key to choose the new level. Set Dual Standby Channel 1.Press the MENU key until the CH icon appears and the current setting flashes (OF, 1-21). 2.Press the UP key or DOWN key to choose the monitor channel. 3.Press the PTT key to save the dual channel settings. 4.Two channels display alternatively. Check Channel Before Transmitting Your device has 21 channels and they display with the cyclic method. To achieve uninterrupted communication, please don’t communicate on the channel if other people are communicating on that channel. To check channel activities before communication, long press the MON/DOWN key, the channel can be used if you listen to the white noise. Set Squelch Level 1.Press the MENU key until the SQL icon appears, and the current level number will flash (1-6). 2.Press the UP key or DOWN key to choose the needed squelch level: 01=high receive sensitivity, 02-05=middle receive sensitivity, 06= low receive sensitivity L3 = High sensitivity L2 = Middle sensitivity L1 = Low sensitivity L0 = Turn off the VOX function Set Transmitting Power 1.Press the MENU key until the PR icon appears. The current setting power level flashes (HI or LO). 2.Press the UP key or DOWN k…

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ShenzhenYsairTechnologyCo.,LTD Address:Room403,4thFloor,Building4,Yunliintelligentpark,No.3Changfa MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict, Shenzhen,GuangdongChina Email:[email protected] Tel:+86-755-23481953 CFR47§2.911(d)(5)(i)AttestationLetter AttestationLetter Date:09/07/2023 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(i)Filing FCCID:2A3OORT628S ShenzhenYsairTechnologyCo.,LTDcertifiesthattheequipmentforwhichauthorizationis sought,isnot“covered”equipmentprohibitedfromreceivinganequipmentauthorization pursuanttosection2.903oftheFCCrules. SincerelyYours, Signature: PrintedName:DongfangShen Title:Manager

ShenzhenYsairTechnologyCo.,LTD Address:Room403,4thFloor,Building4,Yunliintelligentpark,No.3Changfa MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict, Shenzhen,GuangdongChina Email:[email protected] Tel:+86-755-23481953 CFR47§2.911(d)(5)(ii)AttestationLetter AttestationLetter Date:09/07/2023 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(ii)Filing FCCID:2A3OORT628S ShenzhenYsairTechnologyCo.,LTDcertifiesthatasofthedateofthefilingoftheapplication, theapplicantisnotidentifiedontheCoveredListasanentityproducing“covered”equipment. SincerelyYours, Signature: PrintedName:DongfangShen Title:Manager

U.S.AGENTLETTEROFATTESTATION Date:2023-09-07 FEDERALCOMMUNICATIONSCOMMISSION AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(7)Filing FCCID:2A3OORT628S ShenzhenYsairTechnologyCo.,LTDcertifiesthat,asofthedateofthefilingofthe application,RETEVISINC.isourdesignatedU.S.agentforserviceofprocessfortheabove referencedFCCID.ShenzhenYsairTechnologyCo.,LTDacceptstomaintainanagentfor nolessthanoneyearafterthegranteehasterminatedallmarketingandimportationorthe conclusionofanyCommission-relatedproceedinginvolvingtheequipment. RETEVISINC.accepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:RETEVISINC. Address:1733EBROOKPORTST,COVINA,CA91724 FRN:0033657701 Tel.:+1(626)3622594 Email:[email protected] Signedby(printedname):Liuye.Li Signature: Applicant:ShenzhenYsairTechnologyCo.,LTD Address:Room403,4thFloor,Building4,Yunliintelligentpark,No.3Changfa MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict, Shenzhen,GuangdongChina FRN:0031641426 Tel:+86-755-23481953 Email:[email protected] Signedby(printedname):DongfangShen Signature:

ShenzhenYsairTechnologyCo.,LTD Address:Room403,4thFloor,Building4,Yunliintelligentpark,No.3Changfa MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict, Shenzhen,GuangdongChina Email:[email protected] Tel:+86-755-23481953 QA-FR-170-B7/29/2014 FCCAuthorization Date:2023-09-07 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorization Towhomitmayconcern: We,ShenzhenYsairTechnologyCo.,LTD,theundersigned,herebyauthorizesChina CertificationICTCo.,Ltd(Dongguan)toactonitsbehalfinallmattersrelatingto applicationforEquipmentauthorization,includingthesigningofalldocumentsrelating tothesematters.AllactscarriedoutbyChinaCertificationICTCo.,Ltd(Dongguan)on ourbehalfshallhavethesameeffectasourownaction. We,theundersigned,herebycertifythatwearenotsubjecttoadenialoffederalbenefits, thatincludesFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988, 21U.S.C.862. Thisauthorizationisvaliduntilfurtherwrittennoticefromtheapplicant. SincerelyYours, Signature: PrintedName:DongfangShen Title:Manager

ShenzhenYsairTechnologyCo.,LTD Address:Room403,4thFloor,Building4,Yunliintelligentpark,No.3Changfa MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict, Shenzhen,GuangdongChina Email:[email protected] Tel:+86-755-23481953 FCCConfidentialAuthorization Date:2023-09-07 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestregardingapplicationforcertificationof FCCID:2A3OORT628S InaccordancewithSections0.457and0.459oftheCommission’sRules, ShenzhenYsairTechnologyCo.,LTDherebyrequestslong-termconfidentialtreatment ofinformationaccompanyingthisapplicationasoutlinedbelow: BlockDiagram Schematics OperationDescription BOM Tuneupprocedure Theabovematerialscontainproprietaryandconfidentialinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsprovidesunjustified benefitstoitscompetitorsinthemarket. SincerelyYours, Signature: PrintedName:DongfangShen Title:Manager

Label Location

China Certification ICT Co., Ltd (Dongguan) Report No.: CR-230846428-INP Page 1 of 5 EUT INTERNAL PHOTOGRAPHS China Certification ICT Co., Ltd (Dongguan) Report No.: CR-230846428-INP Page 2 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: CR-230846428-INP Page 3 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: CR-230846428-INP Page 4 of 5 Antenna China Certification ICT Co., Ltd (Dongguan) Report No.: CR-230846428-INP Page 5 of 5

SAR TEST REPORT Applicant: Shenzhen Ysair Technology Co., LTD Address: Room 403, 4th Floor, Building 4, Yunli intelligent park,No.3 Changfa Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong China FCC ID: 2A3OORT628S Product Name: Two Way Radio Model Number: RT628S Standard(s): 47 CFR Part 2(2.1093) The above equipment has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: CR230846428-20A Date Of Issue: 2023-09-01 Reviewed By: Karl Gong Title: SAR Engineer Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230846428-20A Page 2 of 38 SAR TEST RESULTS SUMMARY Operation Frequency Bands Highest Reported 1g SAR (W/kg) Limits (W/kg) Head Face Up (Gap 25mm) Body-Worn (Gap 0mm) PTT(462.5500-467.7125MHz) 0.310.331.6 Maximum Simultaneous Transmission SAR Items Head Face Up (Gap 25mm) Body-Worn (Gap 0mm) Limits Sum SAR(W/kg) N/A N/A 1.6 SPLSR N/A N/A 0.04 EUT Received Date: 2023/08/04 Tested Date: 2023/08/27 Tested Result: Pass China Certification ICT Co., Ltd (Dongguan) Report No.: CR230846428-20A Page 3 of 38 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. The lab has been recognized by Innovation, Science and Economic Development Canada to test to Canadian radio equipment requirements, the CAB identifier: CN0123. Declarations China Certification ICT Co., Ltd (Dongguan) 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 a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. 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. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.: CR230846428-20A Page 4 of 38 CONTENTS SAR TEST RESULTS SUMMARY .............................................................................................. 2 TEST FACILITY .......................................................................................................................................... 3 DECLARATIONS .......................................................................................................................................... 3 DOCUMENT REVISION HISTORY .......................................................................................... 6 1. GENERAL INFORMATION .................................................................................................... 7 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 7 1.2 TEST SPECIFICATION, METHODS AND PROCEDURES ........................................................................ 8 1.3 SAR LIMTS ........................................................................................................................................... 9 2. SAR MEASUREMENT SYSTEM .......................................................................................... 10 3. EQUIPMENT LIST AND CALIBRATION .......................................................................... 17 3.1 EQUIPMENTS LIST & CALIBRATION INFORMATION ....................................................................... 17 4. SAR MEASUREMENT SYSTEM VERIFICATION ........................................................... 18 4.1 LIQUID VERIFICATION ...................................................................................................................... 18 4.2 SYSTEM ACCURACY VERIFICATION ................................................................................................. 19 4.3 SAR SYSTEM VALIDATION DATA ............................................................................................. 20 5. EUT TEST STRATEGY AND METHODOLOGY .............................................................. 21 5.1 TEST POSITIONS FOR DEVICE OPERATING NEXT TO A PERSON’S EAR ......................................... 21 5.2 CHEEK/TOUCH POSITION .................................................................................................................. 22 5.3 EAR/TILT POSITION ........................................................................................................................... 22 5.4 TEST POSITIONS FOR BODY-WORN AND OTHER CONFIGURATIONS ............................................... 23 5.5 TEST DISTANCE FOR SAR EVALUATION .......................................................................................... 24 5.6 SAR EVALUATION PROCEDURE ....................................................................................................... 25 6. CONDUCTED OUTPUT POWER MEASUREMENT ........................................................ 26 6.1 TEST PROCEDURE .............................................................................................................................. 26 6.2 MAXIMUM TARGET OUTPUT POWER ............................................................................................... 26 6.3 TEST RESULTS: ...........................................................................…

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APPENDIX D CALIBRATION CERTIFICATES

Auctus Technologies Ltd. 17th Floor, Phase 3, China Academy of Science and Technology, South 1st Road, High tech Park, Nanshan District, Shenzhen, China Part No.: 332020114 Part name: T638 spring Antenna Frequency range: 400-470MHz Gain: 0dBi

TEST REPORT Applicant: Shenzhen Ysair Technology Co., LTD Address: Room 403, 4th Floor, Building 4, Yunli intelligent park,No.3 Changfa Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong China FCC ID: 2A3OORT628S Product Name: Two Way Radio Standard(s): 47 CFR Part 95 Subpart B ANSI C63.26-2015 ANSI/TIA 603-E-2016 The above equipment has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: CR230846428-00 Date Of Issue: 2023/9/14 Reviewed By: Julie Tan Title: RF Engineer Approved By: Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230846428-00 Page 2 of 33 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. The lab has been recognized by Innovation, Science and Economic Development Canada to test to Canadian radio equipment requirements, the CAB identifier: CN0123. Declarations China Certification ICT Co., Ltd (Dongguan) 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 a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. 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. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.: CR230846428-00 Page 3 of 33 CONTENTS T EST FACILITY .......................................................................................................................................... 2 DECLARATIONS .......................................................................................................................................... 2 DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.1 EUT Operation Condition: ............................................................................................................................. 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 7 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 8 2. SUMMARY OF TEST RESULTS ............................................................................................ 9 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 10 3.1 FRS FREQUENCY ACCURACY ........................................................................................................... 10 3.1.1 Applicable Standard ..................................................................................................................................... 10 3.1.2 EUT Setup Block Diagram .......................................................................................................................... 10 3.1.3 Test Procedure ............................................................................................................................................. 10 3.2 FRS TRANSMIT POWER ..................................................................................................................... 11 3.2.1 Applicable Standard ..................................................................................................................................... 11 3.2.2 EUT Setup Block Diagram .......................................................................................................................... 11 3.2.3 Test Procedure ............................................................................................................................................. 11 3.3 FRS EMISSION TYPES ........................................................................................................................ 12 3.3.1 Applicable Standard ..................................................................................................................................... 12 3.3.2 Judgment ...................................................................................................................................................... 12 3.4 FRS AUTHORIZED BANDWIDTH ....................................................................................................... 13 3.4.1 Applicable Standard ......................…

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China Certification ICT Co., Ltd (Dongguan) Report No.: CR230846428-00-TSP Page 1 of 1 TEST SETUP PHOTOGRAPHS Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View