U2BRECEIVERR16FReceiver

R16F Instruction Manual 16-Channel Receiver with Real-time Built-in Telemetry Contents 1. R16F Introduction ............................................................... 1 2. Receiver Protocol Selection ..................................................... 2 1 3. Binding ......................................................................... 2 4. Telemetry ....................................................................... 3 5. Working Modes ................................................................... 4 6. Firmware Update ................................................................. 7 7. Antenna Installment ............................................................. 7 8. RSSI Testing .................................................................... 8 9. Subsidiary ID ................................................................... 9 10. R16F Specifications ............................................................ 9 1. R16F Introduction RadioLink R16F, 16-channel receiver, with real-time built-in telemetry supported, 2.4G FHSS spread spectrum algorithm and 67-channel pseudo-random frequency hopping, supports PWM, SBUS and CRSF signal. It is splash-proof, high voltage servo supported and can get the new functions by updating the firmware. R16F is compatible with RadioLink T16D/T12D/T8FB/T8S/RC8X/RC6GS V3/RC4GS V3/RC6GS V2/RC4GS V2/RC6GS/RC4GS transmitters. 2 Note: 1. For the function of Mavlink port, please refer to Bait Boat function of T16D/T12D transmitter. 2. Please do the following safety check before operating your model: (1) RSSI test (Received Signal Strength Indicator). For test method, please refer to the manual Chapter 8. RSSI Testing. (2) Antenna inspection: The gray line on R16F is coaxial cable, while the transparent line with a length of about 4-5 centimeters at the top is antenna. If the transparent line is broken or damaged, it will directly affect the control distance. If any abnormality is found, please replace the receiver antenna in time. 2. Receiver Protocol Selection If R16D is used together with T16D/T12D, please select receiver protocol in the transmitter. Enter Transmitter Setting--RF SETTING,and then select the protocol. R16F supports FHSS V1, FHSS V2 and FHSS V2.1 protocol. It is recommended to select FHSS V2.1 protocol. For the differences of the protocols, please refer to the table below: Protocol PWM Output Resolution Servo Speed Channel Number Compatible Receiver FHSS V1 2048 14ms 8 All receivers compatible with T16D/T12D FHSS V2 4096 3ms/4ms/14ms available 8 R16F, R12F, R8FGH, R8FG V2.1, R4FGM V2.1, and R8FG and R4FGM receivers with a factory date of 2023/4/26 or later FHSS V2.1 4096 3ms/4ms/14ms available 16 R16F、R12F Notes: 1. FHSS V2 and FHSS V2.1 protocol PWM output resolution level is 4096, so they can achieve a more precise operation. 2. FHSS V2 and FHSS V2.1 support 8 channels. When using R16F and 12F, if FHSS V1 or FHSS V2 protocol is selected, only 8 channels are available on the receiver. 3. After switching protocols, please re-bind the receiver and the transmitter. 4. If digital servo is used, you can select 3ms or 4ms servo speed. 3. Binding Each receiver has an individual ID code and must bind with transmitter before using. When the binding 3 is done, the ID code will be stored in the transmitter and there is no need to rebind. Therefore, when a new R16F is purchased, binding needs to be done in order to work with transmitter. Binding steps: (1) If T16D/T12D/RC8X transmitter is used, select the receiver protocol in the transmitter. For T16D/T12D transmitter, you also need to make sure you have select Internal for MODULE SELECTION, as shown on the right. (Please refer to Chapter 2. Receiver Protocol Selection) Note: If you are using a transmitter other than 16D/T12D/RC8X, such as RC6GS/RC4GS/T8S/T8FB, etc., go to step 2 directly. (2) Put the transmitter and the receiver close to each other (about 60 centimeters). Note: The close distance of the transmitter and receiver may cause signal block, which leads to unsuccessful binding or signal loss. (3) Turn on the transmitter and the receiver, and the LED of R16F will start flashing slowly. (4) There is a black binding button (ID SET) on the side of receiver. Press the button for more than 1 second and release, the LED will flash quickly, indicate binding process is ongoing. (5) When the LED stops flashing and is always on, binding is complete and there will be a signal tower shown on top of the LCD screen of the transmitter. If not succeed, the LED will keep flashing slowly to notify, repeat the above steps. Note: a. When the transmitter and receiver are powered on, if binding fails or the signal is lost, the LED of the receiver will keep flashing to notify. b. The close distance between the transmitter and receiver may cause a signal block, which leads to unsuccessful binding or signal loss. After the binding is successful, if the transmitter and receiver are too close (for example, within 60 centimeters), the signal may also be lost because of signal block. Bring the transmitter and the receiver farther apart, the signal loss will disappear automatically. 4. Telemetry R16F supports real-time built-in telemetry, including signal strength, RSSI value, receiver voltage and model battery voltage. When R16F is connected to the flight controller and using the bait boat function of T16D/T12D, the fishing spot information such as fishing spot name, latitude, and longitude, distance, heading, the number of GPS satellites received, etc. will be displayed on the transmitter screen. Connect one end of the telemetry cable to the R16F telemetry port, and the other end to the ESC to return the power battery voltage. Please refer to the below picture for connection of the telemetry cable: 4 Attention: (1) Reverse polarity protection circuit design for all 16 channels of R16F ensures vital components are protected from a reverse polarity connection. But the JST connector which packed …

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Radiolink Electronic Limited 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Radiolink Electronic Limited Address: 3/ F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Product Name: Receiver FCC ID: U2BRECEIVERR16F Model(s): R16 F, R16SM, R12F, R12DSE 2.911(d)(5)(i) Equipment Type We, [Radiolink Electronic Limited] (“the applicant”) certify that the equipment for which authorization is sought through certification is not: Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Date: 2026-04-27 Title and Company name: General Manager& Xie Bo NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1)986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Radiolink Electronic Limited 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Radiolink Electronic Limited Address: 3/F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Product Name: Receiver FCC ID: U2BRECEIVERR16F Model(s): R16F, R16SM, R12F, R12DSE 2.911(d)(5)(ii) Applicant filing We, [Radiolink Electronic Limited] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to § 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Date: 2026-04-27 Title and Company name: General Manager& Xie Bo NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1)986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Radiolink Electronic Limited 2.911 (d)(7)USA Agent v1.5 Section 2.911(d)(7) USA Agent for Service of Process Company name: Radiolink Electronic Limited Address: 3/F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Product Name: Receiver FCC ID: U2BRECEIVERR16F Model(s): R16F, R16SM, R12F, R12DSE 2.911(d)(7) USA Designated Agent for Service of Process We, [Insert applicant name] (“the applicant”) designate [Agent located in the United States] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either we the grantee have permanently terminated all marketing and importation of the applicable equipment within the U.S., or at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. USA Agent Company name: UUX GROUP INC USA Address: 1312 17th Street #692 Denver, CO 80202, United States FRN Number: 0033701590 Contact Name: Jack Fu Telephone No: (213) 375-3998 Email: [email protected] Applicant Company name: Radiolink Electronic Limited Address: 3/F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Grantee FRN Number: 0016069601 FCC Grantee Code: U2B Contact Name: Xie Bo Telephone No: +86-755-8836-1717 Email: [email protected] Signature: Title: Signature: Title: Manager Date:2026-05-09 Date: 2026-05-09 Radiolink Electronic Limited 2.911 (d)(7)USA Agent v1.5 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

FCC Letter of Authorization Company: Radiolink Electronic Limited Address: 3/F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Product Name: RadioLink R16F Receiver Model Number: R16F, R16SM, R12F, R12DSE FCC ID: U2BRECEIVERR16F We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Yours Sincerely, Name: Bo Xie Date: 2026-04-27 Title: General Manager Signature of applicant:

Radiolink Electronic Limited 2.911 (d)(5)(ii) Applicant Attestation v1.3 Model different letter Company name: Radiolink Electronic Limited Address: 3/F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Product Name: Receiver FCC ID: U2BRECEIVERR16F Model(s): R16F, R16SM, R12F, R12DSE We, [Radiolink Electronic Limited] (“the applicant”) declaration that, Model(s): R16F, R16SM, R12F, R12DSE All models are electrically identical, including the same software parameters and hardware design. Only the model names are different Yours sincerely, Name: Date: 2026-04-27 Title and Company name: General Manager& Xie Bo

Radiolink Electronic Limited Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2026/04/27 Subject; Request for Confidentiality FCC ID: U2BRECEIVERR16F To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Xie Bo

ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page1of7 ProductName:Receiver TestModelNo.:R16F EUTConstructionalDetails External ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page2of7 ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page3of7 ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page4of7

ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page5of7 Internal ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page6of7 ReportNo.:GTSL2026040037F GlobalUnitedTechnologyServicesCo.,Ltd. No.123-128,TowerA,JinyuanBusinessBuilding,No.2,LaodongIndustrialZone, XixiangRoad,BaoanDistrict,Shenzhen,Guangdong,China518102 Telephone:+86(0)75527798480Fax:+86(0)75527798960Page7of7 ------End------

RF Exposure Company name: Radiolink Electronic Limited Address: 3/F,BLD2,FuGuo industrial park,KaiFeng North Road,MeiLin, Shenzhen, China Product Name: Receiver FCC ID: U2BRECEIVERR16F Model(s): R16F, R16SM, R12F, R12DSE Evaluation Method According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: 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. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops and tablets, etc.. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW)/ (min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where  f (GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1 f) is applied to determine SAR test exclusion. Evaluation Results Worst-Case mode Conducted Output Power Results Test Mode Frequency (MHz) Test Results (dBm) Max Tune up power (dBm) SRD 2440.4 1.76 1.5±1 Maximum Evaluation Results Test Mode Frequency (MHz) Antenna Distance (mm) RF output power (including tune-up tolerance) SAR Test Exclusion Threshold SAR Test Exclusion dBm mW SRD 2440.4 5 2.5 1.78 0.56 < 3.0 Yes Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB447498 D01 General RF Exposure Guidance v06 section 4.3.1.

Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 43 Table of contents Maximum Conducted Output Power .................................................................................................................................... 2 -20dB Bandwidth ..................................................................................................................................................................... 6 Occupied Channel Bandwidth ............................................................................................................................................ 10 Carrier Frequencies Separation ......................................................................................................................................... 14 Number of Hopping Channel .............................................................................................................................................. 18 Dwell Time ............................................................................................................................................................................. 20 Band Edge ............................................................................................................................................................................. 27 Band Edge(Hopping) ............................................................................................................................................................ 32 Conducted RF Spurious Emission ..................................................................................................................................... 37 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 43 Maximum Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Duty Factor (dB) Total Power (dBm) Limit (dBm) Verdict NVNT GFSK 2402 Ant1 -0.95 0 -0.95 30 Pass 2440.4 1.76 0 1.76 30 Pass 2481.2 0.61 0 0.61 30 Pass NVNT GFSK 2402 Ant2 -1.07 0 -1.07 30 Pass 2440.4 1.61 0 1.61 30 Pass 2481.2 0.41 0 0.41 30 Pass Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 43 Test Graphs Power NVNT GFSK 2402MHz Ant1 Power NVNT GFSK 2440.4MHz Ant1 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 43 Power NVNT GFSK 2481.2MHz Ant1 Power NVNT GFSK 2402MHz Ant2 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 5 of 43 Power NVNT GFSK 2440.4MHz Ant2 Power NVNT GFSK 2481.2MHz Ant2 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 6 of 43 -20dB Bandwidth Condition Mode Frequency (MHz) Antenna -20 dB Bandwidth (MHz) Verdict NVNT GFSK 2402 Ant1 0.12 Pass 2440.4 0.118 Pass 2481.2 0.118 Pass NVNT GFSK 2402 Ant2 0.118 Pass 2440.4 0.118 Pass 2481.2 0.12 Pass Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 7 of 43 Test Graphs -20dB Bandwidth NVNT GFSK 2402MHz Ant1 -20dB Bandwidth NVNT GFSK 2440.4MHz Ant1 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 8 of 43 -20dB Bandwidth NVNT GFSK 2481.2MHz Ant1 -20dB Bandwidth NVNT GFSK 2402MHz Ant2 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 9 of 43 -20dB Bandwidth NVNT GFSK 2440.4MHz Ant2 -20dB Bandwidth NVNT GFSK 2481.2MHz Ant2 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 10 of 43 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT GFSK 2402 Ant1 0.114 2440.4 0.115 2481.2 0.114 NVNT GFSK 2402 Ant2 0.115 2440.4 0.115 2481.2 0.114 Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1…

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Global United Technology Services Co., Ltd. Report No.: GTSL2026040037F01 Authorized Signature: Robinson Luo Laboratory Manager This 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. Page 1 of 27 TEST REPORT Applicant: Radiolink Electronic Limited Address of Applicant: 3/F, Building 2, Fuguo Industrial Park, Kaifeng Road, Meilin, Shenzhen, Guangdong, China Manufacturer/ Factory: Radiolink Electronic Limited Address of Manufacturer/ Factory: 3/F, Building 2, Fuguo Industrial Park, Kaifeng Road, Meilin, Shenzhen, Guangdong, China Equipment Under Test (EUT) Product Name: Receiver Model No.: R16F, R16SM, R12F, R12DSE Trade Mark: FCC ID: U2BRECEIVERR16F Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: 15 March, 2026 Date of Test: 15 March, 2026 to 25 March , 2026 Date of report issued: 20 April, 2026 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 27 2 Version Version No. Date Description 00 20 April, 2026 Original Tested By: Date: 20 April, 2026 Test Engineer Prepared By: Date: 20 April, 2026 Project Engineer Check By: Date: 20 April, 2026 Reviewer Report No.: GTSL2026040037F01 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 27 3 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 7 5.7 TEST LOCATION ................................................................................................................................. 7 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 7 6 TEST INSTRUMENTS LIST ..................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1 ANTENNA REQUIREMENT .........................................................................…

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