2AD66-DMR818SUWireless walkie-talkie module

Section Company n Address: 30 518101, Ch Product Na FCC ID: 2A Model(s): D 2.911(d)(5 We, [Nice R authorizatio  Pro  Ide n Yours sinc e Name: GH. Title: Man a Company n Signature: NOTE 1 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s 2.911(d) name: NiceR 09-314, Bld hina ame: Wirele AD66-DMR8 DMR818S-U 5)(i) Equip RF Wireless on is sough hibited fro m ntified as an erely, . Song ager name: NiceR ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t NiceR )(5)(i) Ce RF Wireless dg A,Hongdu ss walkie-ta 818SU U ment Type Te c h n o l o gy t through ce m receiving n equipmen RF Wireless of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the RF Wirel ertificatio s Te c h n o l og u business alkie modul e y LTD.] (“th ertification i an equipm e nt type in the s Te c h n o l og and Services C list SearchResul t 63 published o nts/2023/02/06 less Tec on – Equi gy LTD. building, Xi e e applicant ” s not: ent authoriz e “Covered gy LTD. Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ chnology 2. ipment T n'an street, ”) certify tha zation pursu List” NOTE 1 ection 2 of Th witch=P&id=32 /protecting-ag y LTD. 911 (d)(5)(i) Eq Type Zone 43, B at the equip uant to § 2.9 e Secure Netw 5672 ainst-national - quipment Type A Baoan Dist, pment for wh 903; of the F Date: Aug works Act, ava -security-threa Attestation v1.2 Shenzhen hich FCC rules. . 10, 2026 ailable at ats-to-the-com 2 m

Section Company n Address: 30 518101, Ch Product Na FCC ID: 2B Model(s): 2 2.911(d)(5 ) We, [NiceR application §1.50002 o Yours sinc e Name: GH . Title: Man a Company n Signature: NOTE 1 Delete option NOTE 2 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal Re https://www.fe munications-s 2.911(d) name: NiceR 09-314, Bld hina ame: Wirele BWRA-CEN 2AD66-DMR )(ii) Applica RF Wireless , the applic a of this chapt erely, . Song ager name: NiceR not applicable ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t NiceR )(5)(ii) Ce RF Wireless dg A,Hongdu ss walkie-ta NTA R818SU ant filing Te c h n o l o g y ant is not id ter, as an en RF Wireless e to this applic of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the RF Wirel ertificatio s Te c h n o l og u business alkie modul y LTD.] (“the dentified NO ntity produc s Te c h n o l og cation. and Services C list SearchResul t 63 published o nts/2023/02/06 less Tec on – App gy LTD. building, Xi e e applicant” TE 1 on the “C cing covered gy LTD. Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ chnology plicant (C n'an street, ”) certify tha Covered Lis d communic ection 2 of Th witch=P&id=32 /protecting-ag y LTD. 2.911 (d)(5 Covered L Zone 43, B at, as of the st” NOTE 2 , est cations equ D e Secure Netw 5672 ainst-national - 5)(ii) Applicant A List ) Baoan Dist, date of th e tablished pu uipment. Date: Aug. works Act, ava -security-threa Attestation v1.3 Shenzhen e filing of the ursuant to 10, 2026 ailable at ats-to-the-com 3 e m

NiceRFWirelessTechnologyLTD. FCCModularApprovalRequestRev4.0 FederalCommunicationsCommission EquipmentAuthorizationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Aug.31,2026 Subject;ModularTransmitterApplication Companyname:NiceRFWirelessTechnologyLTD. FCCID:2AD66-DMR818SU DearSir/Madam, ThisletterincludestheFCCapplicationrequirementsforModularTransmitterApprovalRequestfor;- FCCKDB996369D01‘ModuleCertificationGuidev04r02”;and FCCKDB996369D03“OEMManualv01r01”. Inaccordancewith47CFR15.212ModularTransmittersandKDB996369D01‘ModuleCertificationGuide v04r02”,FCCID:2AD66-DMR818SUhasbeenexaminedagainstthefollowingrequirements. ItemRequirementper15.212andKDB996369D01Y/NExplanationfromGrantee (Explainwhyproductcomplies/howitisachieved) 1 Theradioelementsofthemodulartransmittermusthave theirownshielding.Thephysicalcrystalandtuning capacitorsmaybelocatedexternaltotheshieldedradio elements. YesThemodularhaveitsownshieldingcover. 2 Themodulartransmittermusthavebuffered modulation/datainputs(ifsuchinputsareprovided)to ensurethatthemodulewillcomplywithpart15 requirementsunderconditionsofexcessivedataratesor over-modulation. Yes Themodulartransmitterhasbufferedmodulation/data inputs. 3 Themodulartransmittermusthaveitsownpowersupply regulation. YesThemodulartransmitterhasitsownpowersupplyregulation. 4 Themodulartransmittermustcomplywiththeantenna andtransmissionsystemrequirementsof§§15.203, 15.204(b)and15.204(c).Theantennamusteitherbe permanentlyattachedoremploya“unique”antenna coupler(atallconnectionsbetweenthemoduleandthe antenna,includingthecable).The“professional installation”provisionof§15.203isnotapplicableto modulesbutcanapplytolimitedmodularapprovals underparagraph(b)ofthissection. Yes Themodulartransmittercomplieswiththeantenna requirements.Theantennahasauniqueconnector. 5 Themodulartransmittermustbetestedinastand-alone configuration,i.e.,themodulemustnotbeinsideanother deviceduringtestingforcompliancewithpart15 requirements.Unlessthetransmittermodulewillbe batterypowered,itmustcomplywiththeACline conductedrequirementsfoundin§15.207.ACorDC powerlinesanddatainput/outputlinesconnectedtothe modulemustnotcontainferrites,unlesstheywillbe marketedwiththemodule(see§15.27(a)).Thelengthof theselinesshallbethelengthtypicalofactualuseor,if thatlengthisunknown,atleast10centimeterstoinsure thatthereisnocouplingbetweenthecaseofthemodule andsupportingequipment.Anyaccessories,peripherals, orsupportequipmentconnectedtothemoduleduring testingshallbeunmodifiedandcommerciallyavailable Yes Themodulecanbeconfiguredindependentlyandmeetsthe requirements NiceRFWirelessTechnologyLTD. FCCModularApprovalRequestRev4.0 (see§15.31(i)). 6 Themodulartransmittermustbeequippedwitheithera permanentlyaffixedlabelormustbecapableof electronicallydisplayingitsFCCidentificationnumber. YesTheFCCIDontheproduct:2AD66-DMR818SU 7 Themodulartransmittermustcomplywithanyspecific rulesoroperatingrequirementsthatordinarilyapplytoa completetransmitterandthemanufacturermustprovide adequateinstructionsalongwiththemoduletoexplain anysuchrequirements.Acopyoftheseinstructionsmust beincludedintheapplicationforequipment authorization. Yes Themodulecompliesfullywiththeoperatingrequirements demonstratedinthetestreport. 8 Radiofrequencydevicesoperatingundertheprovisions ofthispartaresubjecttotheradiofrequencyradiation exposurerequirementsspecifiedin§§1.1307(b),1.1310, 2.1091,and2.1093ofthischapter,asappropriate. Applicationsforequipmentauthorizationofmodular transmittersunderthissectionmustcontainastatement confirmingcompliancewiththeserequirements.The modulartransmittermustcomplywithanyapplicableRF exposurerequirementsinitsfinalconfiguration. Technicalinformationshowingthebasisforthis statementmustbesubmittedtotheCommissionupon request. Yes Themodulartransmittercomplieswiththisrequirement; pleaserefertoRFexposurereport. IntegrationInstructionsforhostproductmanufacturers ThefollowingitemsaresubmittedinsupportofapplicationforModularTransmitterFCCIDasnotedaboveas requiredbytheFCCKDB996369D03OEMManualv01r01. Theseitemsareprovidedasintegrationinstructionsforhostproductmanufacturers(e.g.,OEMinstruction manual)tousewhenintegratingamoduleinahostproduct. AnyrequirementsthatarenotapplicabletotheModuleareasindicatedbelow. SummaryofrequirementsandChecklist. RefertotheKDBfordescriptionofthecompleterequirements; KDB RefSect RequirementsofKDB996369D03UserManualPageNumberreference 2.2ListofapplicableFCCrulesP14 2.3SummarizethespecificoperationaluseconditionsP14 2.4LimitedmoduleproceduresP14 2.5TraceantennadesignsP14-15 2.6RFexposureconsiderationsP15 2.7AntennasP15-16 2.8LabelandcomplianceinformationP16 2.9InformationontestmodesandadditionaltestingrequirementsP16 2.10Additionaltesting,Part15SubpartBdisclaimerP16 2.11NoteEMIconsiderationsP17 2.12HowtomakechangesP17 Name:GH.SongDate:Aug.31,2026 Title:Manager Signatureofapplicant

Date FE D Auth 743 Col u Su b FCC De a This To a Gra the Nic e be m 90. we a una Als o Wire can con t Ple a Sin c Sig n GH. e: Sept. 20, DERAL COM horization an 5 Oakland M umbia, MD 2 bject: Extend C ID: 2AD66 ar Sir/Madam s transmitter aid equipme nt for Certifi frequencie s eRF Wireles marketed to Per the FC C acknowledg uthorized fr e Fre 4 4 4 4 o, equipmen eless walkie not directly trols. ase contact cerely Yours nature: . Song, Man NiceR 2026 MMUNICATI nd Evaluatio Mills Road 21046 ded Frequen 6-DMR818S m, r was design nt authoriza cation, Nice s 400_470M ss Technolog USA users C's KDB6348 e that it's a equencies equency Ra 406.1-420MH 420-421MH 421-430MH 450-470MH nt programm e-talkie modu program the me if you re s, nager F Wirele ONS COMM on Division ncies Justific U ned to opera ation in other eRF Wireles Hz, under F gy LTD. atte with the freq 817 guidanc violation of t nge Hz Hz Hz Hz ming is the re ule complies e transmit fre equire any a ess Tec MISSIONS cation for Ce ate in followi r countries w s Technolog CC Rule Pa ests that the quency band ce, as an alte the FCC Ru U esponsibility s with 47 CF equencies u dditional info chnolog ertification of ng frequenc which accep gy LTD. is re arts 90 on th Wireless wa d which is no ernative to l ules if this de F F ULS presentl 42 F F of Authorize FR Part 90.2 using the nor ormation. gy LTD. f Transmitte cy ranges 40 pt the United equesting tha he FCC Gran alkie-talkie m ot allowed b isting the ex evice operat CC Rule Pa FCC Part 90 ly shows no 20-420.9 MH FCC Part 90 FCC Part 90 ed Service P 203(e), in tha rmally acces er 00-470Mhz d States FCC at the FCC l nt. module will n by the rule p xact frequen tes on art 0 licensees fo Hz 0 0 Personnel, th at the opera ssible extern C lists not art cies, or he ator nal

Company n Address: 30 518101, Ch Tel: 0755-2 Fax: 0755-2 Email: ghso Date: Aug. FEDERAL Authorizati o 7435 Oakla Columbia, FCC ID: 2 A Model num Dear Sir/M a We, NiceR FCC ID: 2 A bits per sec Sincerely, Signature: Print Nam e Title: Mana name: NiceR 09-314, Bldg hina 27838582 27838582 ong@nicerf. 31, 2026 COMMUNI C on and Eval and Mills Ro MD21046 AD66-DMR8 mber: DMR81 adam F Wireless T AD66-DMR8 cond per 6.2 e: GH. Song ager RF Wireless g A,Hongdu .com CATIONS C uation Divis oad 818SU 18S-U Technology 818SU is cap 25 kHz of ch Technology business b Justif COMMISSIO sion LTD. hereb y pable of sup hannel bandw y LTD. uilding, Xin' a fication L N y declare tha pporting a vo width. an street, Zo Letter at our produ oice channe one 43, Bao uct: Wireless l and a mini oan Dist, She s walkie-talk mum data ra enzhen kie module, ate of 4800

Co m Ad d She Pr o Mo d Pr o We act We an d issu our Sig Na m Title Com mpany: Nic dress: 309- enzhen 518 oduct Name del Numbe oduct Desc authorize M on our beha declare tha d certificatio ues concern behalf shal nature: me: e: mpany: Nice ceRF Wirele -314, Bldg A 101, China e: Wireless er(s): DMR8 ription: Wi MiCOM Lab alf on all ma at MiCOM L n of equipm ning the app ll have the s GH. Son g Manager NiceRF W eRF Wi Agen ess Technol A,Hongdu b walkie-talki 818S-U reless wal k bs Inc., 575 atters conce Labs Inc. is ment to the r proval applic same effect g Wireless Te reless T nt Auth ogy LTD. business bu ie module kie-talkie mo Boulder Co erning the c allowed to f regulatory a cation. Any t as acts of chnology L Technol horizat ilding, Xin'a odule ourt, Pleasa certification forward all i agencies as and all acts our own. LTD. logy LT ion an street, Zo anton, Califo of above na information s required a s carried ou Date: D. one 43, Bao ornia 94566 amed equip related to t nd to discu ut by MiCOM Aug. 10, 2 oan Dist, 6, USA, to pment. the approva ss any M Labs on 2026 al

Co m Add Gua Pro Mo d Ou r so i t impo ____ Sign Na m Title Com mpany Nam dress: 309-3 angdong, 51 duct Name del Number r company N t cannot be orter will be ___________ nature me: GH. Son e: Manager mpany: Nice Le me: NiceRF W 314, 3/F, Ho 8101 China : Wireless w r(s): DMR81 NiceRF Wire marked in th written on t __________ ng eRF Wireless etter o Wireless Tec ongdu Busin a walkie-talkie 18S-U eless Techno he user man he user man _________ s Technolog of Dec chnology CO ess Building module ology CO.,LT nual. When s nual. gy CO.,LTD clarati O.,LTD g Zone 43, B TD has not c sold, the na D a on Bao'an Distri confirmed th me and add ate: Aug. 10, ict, Shenzhe he importer y dress of the , 2026 en, yet,

Office o Federa 7435 O Columb USA Subjec t FCC ID To Wh o Pursua are req u docume These d propriet might b In addi t in Title busine s authoriz For 4 O For 1 It is ou r corresp docume authoriz Sincer e Signatu Name: Title: M of Engineeri l Communic Oakland Mills bia, MD 210 t; Request f D: 2AD66-DM om It May C nt to the pro uesting the ents from pu documents tary informa be harmful to Schemat Block Di Parts Lis Operatio Tune-up tional to abo 47 CFR §2 ss sensitive zed devices External Test Set Internal P User Ma 45 days, pu OR 180 days pu r understand pondence du ents and thi zation is iss ely, ure: GH. Song anage r Nice ing Techno cations Com s Road 046 for Confiden MR818SU Concern, ovisions of t Commissio ublic disclos contain det ation in ope o our comp tic Diagram agram st onal Descrip Procedure ove mention .803 and th informatio n s, we reque Photos tup Photos Photos anual rsuant to P u ursuant to K ding that all uring the ce s informatio sued. RF Wire logy mmission ntiality the Commis on to withho sure indefin tailed syste ration of th e any and wo m ption ned docume e importatio n remains c st Short Te ublic Notice KDB 726920 l measurem ertification re on will be av eless Te ssion’s rule old the follow nitely. m and equi e equipmen ould give co ents, in orde on rules in T confidential rm Confide e DA 04-170 0 D01. ment test rep eview proce vailable for echnolog s Title 47 S wing attach pment desc nt. The publ ompetitors a er to comply Title 47 CFR until the act ntiality of th 05. ports, FCC ess cannot public revi e gy LTD. Sections §0. hment(s) as criptions an ic disclosu r an unfair ad y with the m R §2.1204, tual market he following ID label for be granted ew once the Date: Aug. 457 and § 0 confidentia d are consi re of these d vantage in marketing re while ensu ting of newly attachmen mat and as confide n e grant of eq 10, 2026 0.459, we al dered as documents the market . egulations ring that y t(s); ntial quipment .

FCC ID LABEL: Ca. 25mm x 15mm Label Location FCC ID: 2AD66-DMR818SU

MPE ESTIMATION FCC ID: 2AD66-DMR818SU 1, According to §1.1310, Limit for Occupational / Controlled Exposure Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/300 6 1.5GHz---100GHz 5 6 Note: F= Frequency in MHz 2, Estimation Result Frequency (MHz) Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (numerical) MPE (mW/cm²) Limit (mW/cm²) 450.0125 30.243 30±1(31) 1258.925 1.0 1.26 0.31546 1.5000 Note: Note: The estimation distance is 20cm Note: PK Output power= conducted power in mW. 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 in cm Conducted power see the test report HK2607150724-E, antenna gain=1dBi. When the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.31546mW/cm 2 which is<1.5000mW/cm 2 , RF Exposure testing is not required. -------The End-------

Page 1 of 56 Report No.: HK2607150724-E FCC Test Report Report Reference No. .................... : HK2607150724-E FCC ID ............................................. : 2AD66-DMR818SU Compiled by ( position+printed name+signature) . : Testing Engineer Len Liao Supervised by ( position+printed name+signature) . : Technical Manager Sliver Wan Approved by ( position+printed name+signature) . : Authorized Signatory Jason Zhou Date of issue .................................... : Aug. 27, 2026 Testing Laboratory Name ................. : Shenzhen HUAK Testing Technology Co., Ltd. Address ............................................ : 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s Name ........................... : NiceRF Wireless Technology LTD. Address ............................................ : 309-314, Bldg A,Hongdu business building, Xin'an street, Zone 43, Baoan Dist, Shenzhen 518101, China Test Specification Standard ........................................... : FCC Part 90/ FCC Part 2 TRF Originator ................................. : Shenzhen HUAK Testing Technology Co., Ltd. Shenzhen HUAK Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Product Name ................................. : Wireless walkie-talkie module Trade Mark ....................................... : G-NiceRF Model Name ..................................... : DMR818S-U Series Model(s) ................................ : N/A Modulation Type ............................... : Analog: FM Digital: 4FSK Hardware Version ............................ : V1.0 Firmware Version ............................. : V1.7 Operation Frequency ....................... : 406.1-430MHz, 450-470MHz Ratings ............................................. : DC4.2V Result .............................................. : Pass Page 2 of 56 Report No.: HK2607150724-E Test Report Test Report No.: HK2607150724-E Aug. 27, 2026 ______________________________________________________________________________________________ Date of issue Product Name : Wireless walkie-talkie module Model Name : DMR818S-U Series Model(s) : N/A Applicant : NiceRF Wireless Technology LTD. Address : 309-314, Bldg A,Hongdu business building, Xin'an street, Zone 43, Baoan Dist, Shenzhen 518101, China Manufacturer : NiceRF Wireless Technology LTD. Address : 309-314, Bldg A,Hongdu business building, Xin'an street, Zone 43, Baoan Dist, Shenzhen 518101, China Test Result PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Page 3 of 56 Report No.: HK2607150724-E Contents 1 Summary .............................................................................. 5 1.1 Test Standards 5 1.2 Test Procedures and Results 5 1.3 Information of the Test Laboratory 6 1.4 Statement of the measurement uncertainty 6 2 General Information ............................................................... 7 2.1 Environmental Conditions 7 2.2 General Description of EUT 7 2.3 Description of Test Modes and Test Frequency 8 2.4 Related Submittal(s) / Grant(s) 9 2.5 Modifications 9 2.6 Description of Test Setup 9 2.7 Description of Support Units 10 3 Measurement Instruments List ............................................... 11 4 Test Conditions And Results .................................................. 12 4.1 Maximum Transmitter Power 12 4.2 Occupied Bandwidth and Emission Mask 14 4.3 Modulation Characteristic 25 4.4 Frequency Stability 29 4.5 Transmitter Frequency Behavior 32 4.6 Transmitter Radiated Spurious Emission 35 4.7 Transmitter Spurious Emissions (Conducted) 45 5 Test Setup Photos of The EUT ................................................ 54 6 Photos of the EUT ................................................................ 56 Page 4 of 56 Report No.: HK2607150724-E ** Issued History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Aug. 27, 2026 Jason Zhou Page 5 of 56 Report No.: HK2607150724-E 1 Summary 1.1 Test Standards The tests were performed according to following standards: FCC Rules Part 90: Private Land Mobile Radio Services. ANSI/TIA-603-E-2016: Land Mobile FM or PM Communications Equipment Measurement and Performance Standards. FCC Part 2: Frequency Alloca-Tions and Radio Treaty Mat-Ters; General Rules and Reg-Ulations 1.2 Test Procedures and Results Test specification clause Test case Verdict FCC Part 90.205 Maximum Transmitter Power PASS FCC Part2.1047 Modulation Characteristic PASS FCC Part 90.209 Occupied Bandwidth PASS FCC Part 90.210 Emission Mask PASS FCC Part 90.213 Frequency Stability PASS FCC Part 90.214 Transmitter Frequency Behavior PASS FCC Part 90.210 Transmitter Radiated Spurious Emssion PASS FCC Part 90.210 Spurious Emssion On Antenna Port PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Page 6 of 56 Report No.: HK2607150724-E 1.3 Information of the Test Laboratory Shenzhen HUAK Testing Technology Co., Ltd. Add.: 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China 1.4 Statement of the measurement uncertainty The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2,…

Text truncated - open the document above for the full version.

Page 35 of 56 Report No.: HK2607150724-E 4.6 Transmitter Radiated Spurious Emission Limit According to the ANSI/TIA-603 test method, and according to Section 90.210, the power of each unwanted emission shall be less than Transmitted Power as specified below: For transmitters designed to operate with a 6.25 kHz or less bandwidth, any emission must be attenuated below the power (P) of the highest emission contained within the authorized bandwidth as follows: 1 On any frequency from the center of the authorized bandwidth f0 to 3.0 kHz removed from f0: Zero dB. 2 On any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 3.0 kHz but no more than 4.6 kHz: At least 30 + 16.67(fd−3 kHz) or 55 + 10 log (P) or 65 dB, whichever is the lesser attenuation. 3 On any frequency removed from the center of the authorized bandwidth by more than 4.6 kHz: At least 55 + 10 log (P) or 65 dB, whichever is the lesser attenuation. For transmitters designed to operate with 12.5 KHz channel bandwidth: 1 On any frequency removed from the center of the authorized bandwidth f 0 to 5.625 KHz removed from f 0 : Zero dB 2 On any frequency removed from the center of the authorized bandwidth by a displacement frequency (f d in KHz) f 0 of more than 5.625 KHz but no more than 12.5 KHz: At least 7.27dB 3 On any frequency removed from the center of the authorized bandwidth by a displacement frequency (f d in KHz) f 0 of more than 12.5 KHz: At least 50+10 log (P) dB or 70 dB, whichever is lesser attenuation. Test Configuration Page 36 of 56 Report No.: HK2607150724-E Test Procedure a. EUT was placed on a 0.8 meter high non-conductive stand at a 3 meter test distance from the receive antenna. A receiving antenna was placed on the antenna mast 3 meters from the EUT for emission measurements. The height of receiving antenna is 1.0m. Detected emissions were maximized at each frequency by rotating the EUT through 360° and adjusting the receiving antenna polarization. The radiated emission measurements of all test transmit frequencies were measured with peak detector. b. A log-periodic antenna or double-ridged waveguide horn antenna shall be substituted in place of the EUT. The log-periodic antenna will be driven by a signal generator and the level will be adjusted till the same power value on the spectrum analyzer or receiver. The level of the spurious emissions can be calculated through the level of the signal generator, cable loss, the gain of the substitution antenna and the reading of the spectrum analyzer or receiver. c. The EUT is then put into continuously transmitting mode at its maximum power level during the test. Set Test Receiver or Spectrum 100 kHz below 1GHz and 1MHz above 1GHz, Sweep from 30MHz to the 10th harmonic of the fundamental frequency; and recorded the level of the concerned spurious emission point as (P r ). d. The EUT then replaced by a substitution antenna. In the chamber, an substitution antenna for the frequency band of interest is placed at the reference point of the chamber. An RF Signal source for the frequency band of interest is connected to the substitution antenna with a cable that has been constructed to not interfere with the radiation pattern of the antenna. A power (P Mea ) is applied to the input of the substitution antenna, and adjust the level of the signal generator output until the value of the receiver reach the previously recorded (P r ). The power of signal source (P Mea ) is recorded. The test should be performed by rotating the test item and adjusting the receiving antenna polarization. The measurement results are obtained as described below: Power (EIRP) =P Mea - G a + P cl Where; P Mea is the recorded signal generator level P cl is the cable loss connect between instruments G a Substitution Antenna Gain e. This value is EIRP since the measurement is calibrated using an antenna of known gain (2.15 dBi) and known input power. f. ERP can be calculated from EIRP by subtracting the gain of the dipole, ERP = EIRP -2.15dBi. g. Test site anechoic chamber refer to ANSI C63.4 Page 37 of 56 Report No.: HK2607150724-E Test Results All the test modes completed for test. Only the worst result was reported as below: Worst mode: 450-470MHz High Channel For 30M-1GHz Analog: Antenna polarity: Horizontal Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 38 of 56 Report No.: HK2607150724-E Antenna polarity: Vertical Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 39 of 56 Report No.: HK2607150724-E Digital: Antenna polarity: Horizontal Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 40 of 56 Report No.: HK2607150724-E Antenna polarity: Vertical Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 41 of 56 Report No.: HK2607150724-E For 1G-6GHz Analog: Antenna polarity: Horizontal Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 42 of 56 Report No.: HK2607150724-E Antenna polarity: Vertical Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 43 of 56 Report No.: HK2607150724-E Digital: Antenna polarity: Horizontal Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 44 of 56 Report No.: HK2607150724-E Antenna polarity: Vertical Remark: Factor = Cable loss + Antenna factor + Attenuator – Preamplifier; Level = Reading + Factor; Margin = Limit – Level Page 45 of 56 Report No.: HK2607150724-E 4.7 Transmitter Spurious Emissions (Conducted) Limit 12.5K: Per Part 90.210, For transmitters designed to operate with …

Text truncated - open the document above for the full version.

Test Model: DMR818S-U Radiated Emission RF Conducted Emission