2A3MU-NBASEGeodetic GNSS Receiver

FarRange,Affordable FarnavNbaseGNSS USERGUIDE Survey&Construction|Feb2026 TableofContent Preface ...................................................................................................................1 Copyright ...............................................................................................................1 Copyright .......................................................................................................1 Trademarks ....................................................................................................1 SafetyWarnings .....................................................................................................1 FCCStatement .......................................................................................................1 CEInterferenceStatement .....................................................................................2 Brazil ......................................................................................................................3 ConformitytoJapaneseregulations .......................................................................3 1Introduction ........................................................................................................4 1.1SafetyInformation ...........................................................................................4 1.2RegulationsandSafety ....................................................................................4 1.3TechnicalSupport ............................................................................................5 1.4Disclaimer ........................................................................................................5 1.5YourComments ...............................................................................................5 2GettingStartedwithNbase ................................................................................6 2.1AbouttheReceiver ...........................................................................................6 2.2PartsoftheReceiver ........................................................................................6 2.2.1FrontPanel ............................................................................................6 2.2.2Lowerhousingandports .......................................................................8 2.3BatteriesandPower .........................................................................................9 2.3.1InternalBatteries ...................................................................................9 2.3.2ChargingtheBattery .............................................................................9 2.3.3BatterySafe ...........................................................................................9 2.4InsertingBatteryandSIMCard .....................................................................10 2.4.1Insertingbattery ..................................................................................10 2.4.2InsertingSIMcard ..............................................................................11 2.5ProductBasicSupplyAccessories .................................................................12 2.6ConnectingtoaController .............................................................................13 2.6.1ConnectingviaWi-FiwitheFieldSoftware .......................................13 2.6.2ConnectingviaBluetoothwitheFieldSoftware .................................13 2.7DownloadingLoggedData ............................................................................14 2.7.1FTPDownload ....................................................................................14 3FrontPanelOperation ......................................................................................17 3.1MainOperationMenus ..................................................................................17 3.2ConfiguretheWorkingMode ........................................................................19 4EquipmentSetupandOperation ......................................................................23 4.1Post-processingBaseStationSetup ...............................................................23 4.2Real-TimeBaseStation .................................................................................24 4.2.1Real-TimeBaseStationSetup ............................................................25 4.2.2UltraBase ...........................................................................................25 4.3Real-TimeRoverStation ...............................................................................27 4.3.1Real-TimeRoverStationSetup ..........................................................27 4.3.2UltraRover .........................................................................................28 5ConfiguringThroughaWebBrowser ..............................................................29 5.1StatusMenu ...................................................................................................30 5.1.1PositionSubmenu ...............................................................................31 5.1.2ActivitySubmenu ...............................................................................31 5.1.3GoogleMapSubmenu ........................................................................32 5.2SatellitesMenu ..............................................................................................32 5.2.1TrackingTableSubmenu ....................................................................33 5.2.2TrackingInfo.TableSubmenu ............................................................33 5.2.3TrackingSkyplotSubmenu .................................................................34 5.2.4SatelliteActivationSubmenu ..............................................................34 5.2.5TrackingEnableSubmenu ..................................................................35 5.3ReceiverConfigurationMenu ..................…

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Shanghai EFIX Geomatics Co., Ltd. Covered Equipment Certification Attestation Letter 6/30/2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2A3MU-NBASE Shanghai EFIX Geomatics Co., Ltd. (“ the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shanghai EFIX Geomatics Co., Ltd. (“ the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Shanghai EFIX Geomatics Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Glenn Chu Title: Certification Manager Company Name: Shanghai EFIX Geomatics Co., Ltd. Date: 6/30/2026

U.S.AgentDesignationforServiceofProcess (ApplicantandU.S.AgentareSeparateParties Shanghai EFIX Geomatics Co.,Ltd. ) TO:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S.Agent Company Name: Igage Mapping Corporation. FRN: 0013933296 Contact Name: Mark E Silver Address: 1545 South 1100 East #1, Salt Lake City, UT 84105, United States Email: [email protected] This letter is to confirm that we (“the Designated U.S.Agent) have accepted the responsibility to act as the Designated U.S.Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicantnoted below. U.S.Agent Signature: Date: 06/23/2026 Signed by (Printed Name/Title): Mark E Silver TheApplicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S.Agent information above changes. Applicant Company name: Shanghai EFIX Geomatics Co.,Ltd. Grantee Code: 2A3MU FRN: 0031615594 FCC ID: 2A3MU-NBASE Contact Name: Glenn Chu StreetAddress: Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai City/Province/Zip: Shanghai, China Telephone No: +86 755 29766001 Applicant Signature: Date: 06/23/2026 Signed by (Printed Name/Title): Glenn Chu, CERTIFICATION MANAGER

June 30, 2026 Nemko Canada Inc 303 River Road Ottawa, Ontario, Canada K1V 1H2 Attn: Director of Certification Authority to Act as Agent On our behalf, I appoint Shenzhen NCT Testing Technology Co., Ltd. Address: A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Person: Henry Wang (Name and address，person). to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko Canada Inc, still resides with Shanghai EFIX Geomatics Co., Ltd. Address: Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai ( applicant name and address). Signature: Name Glenn Chu Company Name Shanghai EFIX Geomatics Co., Ltd. Address Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai Tel +86 755 29766001 Fax +86 755 29766001 Email [email protected]

Shanghai EFIX Geomatics Co., Ltd. June 30, 2026 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A3MU-NBASE Product Name: Geodetic GNSS Receiver Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics Long-term confidential  Block diagram Long-term confidential  Operation description Long-term confidential  Tune-up Long-term confidential These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Signature: Name Glenn Chu Company Name Shanghai EFIX Geomatics Co., Ltd. Address Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai Tel +86 755 29766001 Fax +86 755 29766001 Email [email protected]

Shanghai EFIX Geomatics Co., Ltd. Subject: Extend Frequencies Justification Original Application FCC ID: 2A3MU-NBASE Company: Shanghai EFIX Geomatics Co., Ltd. Address: Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai Dear Sir or Madam; This Digital radio was designed to operate in the frequency bands 450-470MHz; To aid equipment authorization in other countries that accepts the United States FCC Grant for Certification, Shanghai EFIX Geomatics Co., Ltd. Is requesting that the FCC list the frequencies 450-470MHz under FCC Rule Parts 90 and the Grant note code “EF”. For the FCC’s Rule Part 90 applications, this radio is used in systems by Federal and Public Safety agencies including Police, Fire, and Emergency Medical Services, etc. as indicated in the table below. Equipment programming is the responsibility of Authorized Service Personal. Also, the radio complies with 47 CFR Part 90.203 (e), in that the operator cannot directly program the transmit frequencies using the normally accessible external controls. Per the FCC’s KDB634817 guidance, as an alternative to listing the exact frequencies, we acknowledge that it’s a violation of the FCC Rules if this device operates on unauthorized frequencies. Please contact me if you require any additional information. Signature: Date: 2026-06-30 Name: Glenn Chu Title: Certification Manager Company: Shanghai EFIX Geomatics Co., Ltd.

Shanghai EFIX Geomatics Co., Ltd. Subject: Extend Frequencies Justification Original Application FCC ID: 2A3MU-NBASE Company: Shanghai EFIX Geomatics Co., Ltd. Address: Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai Dear Sir or Madam; We, Shanghai EFIX Geomatics Co., Ltd. declares that the Digital radio meets 47CFR Section 90.203(j)(4) and 90.203(j)(5) spectrum efficiency requirement; 1. This equipment meets the spectrum efficiency standard of one voice channel per 6.25 kHz of channel bandwidth as required by 47CFR 90.203(j)(5). 2. The digital radio adopts GFSK digital modulation with 12.5 KHz and 25KHz channel spacing, Emission Designator F1D for data mode. It is designed per ETSI TS 102 361-1, supporting 9600 bits per second in 12.5 KHz channel spacing and 19200 bits per second in 25 KHz channel spacing. Converted to standard bandwidth benchmark, it supports 4800 bits per second per 6.25 kHz channel bandwidth, fully meeting the minimum data rate requirement of 47CFR 90.203(j)(5). 3. The device is capable of data transmission, with transmitter output power greater than 500 mW and channel bandwidth wider than 6.25 kHz, which fully falls within the scope of the above regulatory requirement. In addition, this Digital radio is capable of operating on the nationwide public safety interoperability calling channel (453.2125 MHz), meets 47CFR Section 90.203(j)(1) requirement; Signature: Date: 2026-06-30 Name: Glenn Chu Title: Certification Manager Company: Shanghai EFIX Geomatics Co., Ltd.

Page 1 of 7 FCC ID : 2A3MU-NBASE Product Name : Geodetic GNSS Receiver Model : NBase Page 2 of 7 External Photos of EUT Page 3 of 7 Page 4 of 7 Page 5 of 7 Page 6 of 7 Page 7 of 7

Label Location

Page 1 of 13 FCC ID : 2A3MU-NBASE Product Name : Geodetic GNSS Receiver Model : NBase Page 2 of 13 Internal Photos of EUT Page 3 of 13 Page 4 of 13 Page 5 of 13 Page 6 of 13 Page 7 of 13 Page 8 of 13 Page 9 of 13 Page 10 of 13 Page 11 of 13 Page 12 of 13 Page 13 of 13

FCC ID: 2A3MU-NBASE RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1091(C)，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation Remark： 1.EUT contain FCC ID: XMR201903EG25G, 2/3/4G Max Conducted Average Output Power: 25dBm, ANT gain is -6.32dBi in LTE B12. 2. UHF, EDR, 2.4G WIFI ANT and 2/3/4G ANT can simultaneously transmitting: 0.2767/0.3084 + 0.0001/1.0 + 0.0008/1.0 + 0.00163/0.4665 = 0.9016<1. 3.UHF ANT gain: 4.11dBi, EDR and 2.4GWIFI ANT gain: 1.95dBi. Meet MPE requirements, RF Exposure evaluation is not required. Test mode Freq. (MHz) Output power (dBm) Max Output power (mW) Power Density at R=60cm (mW/cm2) Limit (mW/cm2) Result EDR 2402 2.82 1.91 0.0001 1.0 PASS 802.11b 2412 13.56 22.70 0.0008 1.0 PASS Test mode Freq. (MHz) Output power (dBm) Max Output power (mW) Power Density at R=60cm (mW/cm2) Limit (mW/cm2) Result Radio 462.55 36.865 4858.48 0.2767 0.3084 PASS Test Band Freq. (MHz) Output power (dBm) Max Output power (mW) Power Density at R=60cm (mW/cm2) Limit (mW/cm2) Result LTE B12 699.70 25.00 316.23 0.00163 0.4665 PASS

Report No.: ET-26062652E01 Tel:(86-0755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China TEST REPORT Applicant: Shanghai EFIX Geomatics Co., Ltd. Address of Applicant: Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai Manufacturer: Shanghai EFIX Geomatics Co., Ltd. Address of Manufacturer： Room 1137, Area D, 11th Floor, Building 1, No. 158, Shuanglian Road, Qingpu District, Shanghai Product Name: Geodetic GNSS Receiver Model No.: NBase Trade Mark: FCC ID: 2A3MU-NBASE Applicable standards: FCC CFR Title 47 Part 90, FCC CFR Title 47 Part 2 Test Procedure:: ANSI C63.26-2015 Date of Test: April 29, 2026 – July 10, 2026 Date of report issued: July 10, 2026 Remark: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By Shenzhen ETR Standard Technology Co., Ltd. Address: No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Compiled by: Reviewed by: Approved by: Project Engineer Project Manager Autorized Signature - Page 2 of 44 - Report No.: ET-26062652E01 Tel:(86-0755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Report Revision History Report No. Description Issue Date ET-26062652E01 Original June 18, 2026 - Page 3 of 44 - Report No.: ET-26062652E01 Tel:(86-0755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Contents Page Contents ------------------------------------------------------------------------------------------------------------------------------- 3 1. Test Summary ----------------------------------------------------------------------------------------------------------------- 4 2. General Information --------------------------------------------------------------------------------------------------------- 5 2.1. General Description of EUT ------------------------------------------------------------------------------------- 5 2.2. Test frequency channel------------------------------------------------------------------------------------------- 6 2.3. Test mode ------------------------------------------------------------------------------------------------------------- 6 2.4. EUT configuration -------------------------------------------------------------------------------------------------- 6 2.5. Test Environment --------------------------------------------------------------------------------------------------- 7 2.6. Test Facility ----------------------------------------------------------------------------------------------------------- 7 2.7. Environmental conditions --------------------------------------------------------------------------------------- 7 2.8. Measurement Uncertainty --------------------------------------------------------------------------------------- 7 3. Test Instruments list -------------------------------------------------------------------------------------------------------- 8 4. Test Results and Measurement Data ---------------------------------------------------------------------------------- 9 4.1. Transmitter Power (Conducted) ---------------------------------------------------------------------------------- 9 4.2. Occupied Bandwidth and Emission Mask -------------------------------------------------------------------- 17 4.3. Spurious Emissions(conducted) -------------------------------------------------------------------------------- 29 4.4. Radiated Spurious Emission------------------------------------------------------------------------------------- 32 4.5. Transient Frequency Behavior ---------------------------------------------------------------------------------- 38 4.6. Behavior Frequency Stability ------------------------------------------------------------------------------------ 41 5. Test Setup Photo ----------------------------------------------------------------------------------------------------------- 43 - Page 4 of 44 - Report No.: ET-26062652E01 Tel:(86-0755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 1. Test Summary Test Item Section in Standard Result Transmitter Power(Conducted) FCC PART 90 PASS Occupied Bandwidth & Emission Mask FCC PART 90 PASS Spurious Emissions(conducted) FCC PART 90 PASS Spurious Emissions(Radiated) FCC PART 90 PASS Transient Frequency Behavior FCC PART 90 PASS Frequency Stability FCC PART 90 PASS Modulation Characteristics FCC PART 2 FCC PART 90 N/A Note1 Adjacent channel power FCC PART 2 N/A Note2 Remark: Pass: The EUT complies with the essential requirements in the standard. N/A Note1 : The EUT is used in digital modulation. N/A Note2 : Authorized bandwidth (kHz) < 20 kHz. Compliance determination rules 1).The Compliance determination of test results does not take into account measurement uncertainty. Measurement results are determined based on regulatory limitations or requirements specified by the applicant/manufacturer. If measurement uncertainty is taken into account, the applicant/manufacturer will bear all possible risks of non-compliance. 2).The measurement uncertainty please refer to each test result in the "Measurement Uncertainty” - Page 5 of 44 - Report No.: ET-26062652E01 Tel:(86-0755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Sh…

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1 TQX-460TNC-U Terminal Antenna TQX-460TNC-U is specially pro duced for terminal devices of the 400MHz fre quency band system. This antenna has a compact structure, a beautiful appearance, and is easy to install. 技 术 参 数 ModelTQX-460TNC-U Fr equency range-MHz450~470 Bandwidth-MHz20 Gain-dBi 4.11dBi VSWR 456-465MHz ≤ 1.6 450-470MHz≤2.1 Impedance -Ω 50 Polariza tionVertical Max. Power-W30 ConnectorTNC male Length-mm 303±5 Weight-g 52 ± 5 -40～75 Note: The antenna has an el Operating Temperature-°C astic whip-like st ructure and is bend-resist ant. Guangdong Kenbotong Telecom Industory Co., Ltd. AddressKenbotong Technology Park, No.30 Dongyang 3rd Road, Danzao Town, Nanhai District, Foshan, Guangdong, China 2 Typicalpattern(2D&3D) Frequency range HplanEplan3D Gain （ dBi ） 450MHz 4.03 460MHz 4.11 470MHz 4.08 Guangdong Kenbotong Telecom Industory Co., Ltd. AddressKenbotong Technology Park, No.30 Dongyang 3rd Road, Danzao Town, Nanhai District, Foshan, Guangdong, China

Page 1 of 5 FCC ID : 2A3MU-NBASE Product Name : Geodetic GNSS Receiver Model : NBase Page 2 of 5 Photos of Test Setup NCT TEST Page 3 of 5 Page 4 of 5 ETR TEST Page 5 of 5