BRWSPMR1275SLT6

Spektrum SLT6 6 Channel Transmitter Manual EN 2 NOTICE All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, LLC. For up-to-date product literature, visit horizonhobby.com or towerhobbies.com and click on the support or resources tab for this product. Meaning of Special Language The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product: WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage, and serious injury OR create a high probability of superficial injury. CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a possibility of serious injury. NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND a little or no possibility of injury. WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating. Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury. This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children without direct adult supervision. Do not attempt disassembly, use with incompatible components or alter product in any way without the approval of Horizon Hobby, LLC. This manual contains instructions for safety, operation and maintenance. It is essential to read and follow all the instructions and warnings in the manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or serious injury. Age Recommendation: Not for children under 14 years. This is not a toy. WARNING AGAINST COUNTERFEIT PRODUCTS Always purchase from a Horizon Hobby, LLC authorized dealer to ensure authentic high-quality Spektrum product. Horizon Hobby, LLC disclaims all support and warranty with regards, but not limited to, compatibility and performance of counterfeit products or products claiming compatibility with DSM or Spektrum technology. NOTICE: This product is only intended for use with unmanned, hobby-grade, remote-controlled vehicles and aircraft. Horizon Hobby disclaims all liability outside of the intended purpose and will not provide warranty service related thereto. EN 3 Contents Specifications .............................................................................................4 Transmitter Diagram ....................................................................................5 Installing the Transmitter Batteries ................................................................6 Turning the Transmitter ON and OFF .............................................................6 Binding.......................................................................................................6 Range Test .................................................................................................6 1-Year Limited Warranty ..............................................................................7 Warranty and Service Contact Information ....................................................8 FCC Information ..........................................................................................9 IC Information .............................................................................................9 Compliance Information for the European Union ..........................................10 EN 4 SLT6 TRANSMITTER (SPMR1275) TypeSLT 6 CH Transmitter Auxiliary Switches and Buttons 1 Momentary Button, 1 3-Position Switch, 2 2-Position Switches Channels6 Power Supply4 AA Batteries Control ModeMode 2 TelemetryFlight Battery Voltage (Smart ESC required) Frequency2.4GHz Trim ProgrammingDigital Trims Specifications EN 5 Antenna Flight Mode Switch Throttle Cut Switch Dual Rate Switch 1 Green LED Throttle/Rudder Gimbal (Mode 2) Aileron Trim (Mode 2) Elevator Trim (Mode 2) Power Switch Neck Strap Hook Throttle Trim (Mode 2) Elevator/Aileron Gimbal (Mode 2) Transmitter Diagram Bind / Panic Button Rudder Trim (Mode 2) Integrated Handle USB Port (data output only) Battery Compartment EN 6 Installing the Transmitter Batteries 1. Remove the battery cover from the bottom of the transmitter. 2. Install four AA batteries as shown. 3. Install the battery cover. CAUTION: NEVER remove the transmitter batteries while the model is powered on. Loss of model control, damage or injury may occur. CAUTION: If using rechargeable batteries, charge only rechargeable batteries. Charging non-rechargeable batteries may cause the batteries to burst, resulting in injury to persons and/or damage to property. CAUTION: Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to national regulations. Turning the Transmitter ON and OFF Slide the power button to power the transmitter ON. The LED indicator will illuminate green when the transmitter is ON and transmitting. To power the transmitter OFF, slide the power button the off position. Binding The SLT6 and your receiver must be bound to each other before they will operate. Binding is the process of teaching the receiver the specific code of the transmitter so it will only connect to that specific transmitter. 1. Power on the receiver. The LED on the receiver will begin flashing when not bound to the transmitter or when the transmitter is off. 2. To bind the transmitter to SLT receiver, with the throttle in the low position, push and hold the bind button while powering on the transmitter to put the transmitter in bind mode. Range Test 1. Power on the transmitter for at least five seconds with the throttle stick and trim low. 2. Press a…

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Horizon Hobby, LLC 021423-17 rev 4 Certification Application Attestation Statements Date: March 8, 2023 American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 To Whom It May Concern: Statement for 47 CFR section 2.911(d)(5)(i) _____Horizon Hobby, LLC _____ certifies that as of the date of the application the equipment for which authorization is sought is not “covered” equipment 1 prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, including affiliates or subsidiaries of the named companies, the applicant must include an explanation on why the equipment is not “covered” equipment. Additional Explanation: <N/A> Statement for 47 CFR section 2.911(d)(5)(ii) ______Horizon Hobby, LLC ______ (“the applicant”) certifies that, as of the date of the filing of this application, the applicant ☐ - is / ☐ - is not identified on the Covered List as an entity producing “covered” equipment. Thank you, By: _________ ______ Jason Rosa ________ (Signature 2 ) (Print name) Title: _____ Lead Quality and Compliance Associate_______ Company: __ Horizon Hobby, LLC____ Telephone: ___ (217) 403-3268__________ 1 - The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist . 2 - Letters should be placed on appropriate letterhead.

Horizon Hobby, LLC 021423-17 Rev 4 U.S. Agent Designation for Service of Process (Applicant is Both Grantee and U.S. Agent) TO: American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 ATTENTION: FCC Certification – Section 2.911(d)(7) Information This letter is to confirm that the Applicant will also serve as the U.S. Agent for Service of Process as required by 47 CFR 2.911(d)(7). The Applicant 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 changes. Applicant Company name: Horizon Hobby, LLC Grantee Code: BRW FRN: ................... 0006301931 Contact Name: Mr Christopher Dickerson Street Address: 2904 Research Rd. City/Province/Zip: Champaign/ Illinois / 61822 Telephone No: (217) 403-3268 Email: [email protected] Applicant Signature 1 : Date: 2023-04-17 Signed by (Printed Name/Title): Mr Christopher Dickerson/ President and EVP Product Management and Marketing 1 - Letters should be placed on appropriate letterhead.

China Starwin Science & Technology Co., Ltd Floor 3th, Building B, No. 2 Keyuannan 2nd Road, High-tech Zone, Chengdu, China Confidentiality Request Letter Federal Communications Commission Authorization and Evaluation Division FCC ID: 2AUBBHSA-FUF Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: 1. Block Diagram 2. Schematics 3. Operational Description 4. Turn-up procedure The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, _________________ Name: James Li Title: Board Chairman Date: 2023-03-09

Horizon Hobby, LLC Cover Letter Federal Communications Commission Authorization and Evaluation Division FCC ID: BRWSPMR1275 Please be notified that we, the undersigned, Horizon Hobby, LLC declares that the product which bears the above FCC ID is also compliant with the FCC requirements for Supplier’s Declaration of Conformity(SDoC). And the SDoC procedure shall be carried out prior to marketing the device in the US. Sincerely, _________________ Name: Jason Rosa Title: Lead Quality and Compliance Associate Email: [email protected] Date: 2023-03-04

Horizon Hobby, LLC Declaration of Authorization We Name: Horizon Hobby, LLC Address: 2904 Research Road, Champaign, IL, 61822 Declare that: Name Representative of agent: Marlin Chen Agent Company name: MRT Technology (Suzhou) Co., Ltd Address: D8 Building, Youxin Industrial Park, No.2 Tian'edang Rd., Wuzhong Economic Development Zone City: Suzhou Country: China is authorized to apply for Certification of the following product(s): Product: SLT6 FCC ID: BRWSPMR1275 Model No.: SPMR1275 Sincerely, Name: Jason Rosa Title: Lead Quality and Compliance Associate Email: [email protected] Date: 2023-03-04

Report No.: 2211RSU028-UE 1 of 3 External Photograph (1) EUT Photo (2) EUT Photo Report No.: 2211RSU028-UE 2 of 3 (3) EUT Photo (4) EUT Photo (5) Report No.: 2211RSU028-UE 3 of 3 (5) EUT Photo (6) EUT Photo

Report No.: 2211RSU028-UE 1 of 4 Internal Photograph (1) EUT Photo (2) EUT Photo Report No.: 2211RSU028-UE 2 of 4 (3) EUT Photo (4) EUT Photo (5) Report No.: 2211RSU028-UE 3 of 4 (5) EUT Photo (6) EUT Photo Antenna Location Report No.: 2211RSU028-UE 4 of 4 (7) EUT Photo (8) EUT Photo

MRT Technology (Suzhou) Co., Ltd Report No.: 22 11RSU028-U2 Phone: +86-512-66308358 Report Version: V02 Web: www.mrt-cert.com Issue Date: 2023-05-05 Template Version:0.0 1 of 10 RF Exposure Evaluation Declaration FCC ID: BRWSPMR1275 Applicant: Horizon Hobby, LLC Product: SLT6 Model No.: SPMR1275 Brand Name: Horizon Hobby FCC Classification: Digital Transmission System (DTS) FCC Rule Part(s): FCC Part 2.1091 Result: Complies Reviewed By: Kevin Guo Approved By: Robin Wu The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. Report No.: 2211RSU028-U2 2 of 10 Revision History Report No. Version Description Issue Date Note 2211RSU028-U2 V01 Initial Report 2023-03-30 Invalid 2211RSU028-U2 V02 Add some description 2023-05-05 Valid Report No.: 2211RSU028-U2 3 of 10 CONTENTS Description Page 1. General Information ................................................................................................................................ 4 1.1. Applicant ........................................................................................................................................ 4 1.2. Manufacturer ................................................................................................................................. 4 1.3. Testing Facility ............................................................................................................................... 4 1.4. Product Information ....................................................................................................................... 5 1.5. Device Classification ..................................................................................................................... 5 1.6. Applied Standards ......................................................................................................................... 5 1.7. Duty Cycle ..................................................................................................................................... 6 2. RF Exposure Evaluation ......................................................................................................................... 7 2.1. Test Limits ..................................................................................................................................... 7 2.2. MPE Exemptions ........................................................................................................................... 8 2.3. Calculated Result ......................................................................................................................... 11 Report No.: 2211RSU028-U2 4 of 10 1. General Information 1.1. Applicant Horizon Hobby, LLC 2904 Research Road, Champaign, IL, 61822 1.2. Manufacturer Horizon Hobby, LLC 2904 Research Road, Champaign, IL, 61822 1.3. Testing Facility Test Site – MRT Suzhou Laboratory Laboratory Location (Suzhou - Wuzhong) D8 Building, No.2 Tian’edang Rd., Wuzhong Economic Development Zone, Suzhou, China Laboratory Location (Suzhou - SIP) 4b Building, Liando U Valley, No.200 Xingpu Rd., Shengpu Town, Suzhou Industrial Park, China Laboratory Accreditations A2LA: 3628.01 CNAS: L10551 FCC: CN1166 ISED: CN0001 VCCI: R-20025 G-20034 C-20020 T-20020 R-20141 G-20134 C-20103 T-20104 Test Site – MRT Shenzhen Laboratory Laboratory Location (Shenzhen) 1G, Building A, Junxiangda Building, Zhongshanyuan Road West, Nanshan District, Shenzhen, China Laboratory Accreditations A2LA: 3628.02 CNAS: L10551 FCC: CN1284 ISED: CN0105 Test Site – MRT Taiwan Laboratory Laboratory Location (Taiwan) No. 38, Fuxing 2nd Rd., Guishan Dist., Taoyuan City 333, Taiwan (R.O.C.) Laboratory Accreditations TAF: L3261-190725 FCC: 291082, TW3261 ISED: TW3261 Report No.: 2211RSU028-U2 5 of 10 1.4. Product Information Product Name SLT6 Model No. SPMR1275 Wireless Specification 2403 ~ 2480MHz Antenna Type Monopole antenna Antenna Gain 2.84dBi Working Voltage 4 * AA Batteries Note: The information of EUT was provided by the manufacturer, and the accuracy of the information shall be the responsibility of the manufacturer. 1.5. Device Classification According to the user manual, the device is held by the user when using it, this device is classified as a Portable Device. So, the RF exposure evaluation requirements of § 2.1091 for portable device exposure conditions subject to MPE limits. 1.6. Applied Standards According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards:  FCC Part 2.1091 & KDB 447498 D04 Interim General RF Exposure Guidance v01 Report No.: 2211RSU028-U2 6 of 10 1.7. Duty Cycle Frequency Duty Cycle 2403MHz 15.94% Duty cycle is fixed by software and cannot be changed, declared by the manufacturer. The device is a source-based controlled device. Refer to operation description. Report No.: 2211RSU028-U2 7 of 10 2. RF Exposure Evaluation 2.1. Test Limits According to FCC §1.1310: 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 ) Average Time (Minutes) (A) Limits for Occupational/ Control 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 <6 300-1,500 -- -- f/300 <6 1,500-100,000 -- -- 5 <6 (B) Limits for General Population/ Uncontrolled Exposures 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 <30 300-1,500 -- -- f/1500 <30 1,500-100,000 -- -- 1.0 <30 f= frequency in MHz. * = Plane-wave eq…

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MRT Technology (Suzhou) Co., Ltd Report No.: 2211RSU028-U1 Phone: +86-512-66308358 Report Version: V01 Web: www.mrt-cert.com Issue Date: 2023-03-30 Template Version:0.0 1 of 55 RF MEASUREMENT REPORT FCC ID: BRWSPMR1275 Applicant: Horizon Hobby, LLC Product: SLT6 Model No.: SPMR1275 Brand Name: Horizon Hobby FCC Classification: Digital Transmission System (DTS) FCC Rule Part(s): Part 15 Subpart C (Section 15.247) Result: Complies Received Date: 2022-11-11 Test Date: 2023-02-18 ~ 2023-02-24 Reviewed By: Kevin Guo Approved By: Robin Wu The test results relate only to the samples tested. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in ANSI C63.10-2013. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. Report No.: 2211RSU028-U1 2 of 55 Revision History Report No. Version Description Issue Date Note 2211RSU028-U1 V01 Initial Report 2023-03-30 Valid Report No.: 2211RSU028-U1 3 of 55 CONTENTS Description Page 1. General Information ................................................................................................................................ 5 1.1. Applicant ...................................................................................................................................... 5 1.2. Manufacturer ................................................................................................................................ 5 1.3. Testing Facility ............................................................................................................................. 5 1.4. Product Information ...................................................................................................................... 6 1.5. Radio Specification under Test .................................................................................................... 6 1.6. Working Frequencies ................................................................................................................... 7 2. Test Configuration ................................................................................................................................... 8 2.1. Test System Connection Diagram................................................................................................ 8 2.2. Test Software ............................................................................................................................... 8 2.3. Applied Standards ........................................................................................................................ 8 2.4. Test Environment Condition ......................................................................................................... 9 3. Antenna Requirements ......................................................................................................................... 10 4. Measuring Instrument ........................................................................................................................... 11 5. Decision Rules and Measurement Uncertainty .................................................................................. 12 5.1. Decision Rules ........................................................................................................................... 12 5.2. Measurement Uncertainty .......................................................................................................... 12 6. Test Result .............................................................................................................................................. 13 6.1. Summary .................................................................................................................................... 13 6.2. 6dB Bandwidth Measurement .................................................................................................... 14 6.2.1. Test Limit .................................................................................................................................... 14 6.2.2. Test Procedure ........................................................................................................................... 14 6.2.3. Test Setting ................................................................................................................................ 14 6.2.4. Test Setup .................................................................................................................................. 14 6.2.5. Test Result ................................................................................................................................. 14 6.3. Output Power Measurement ...................................................................................................... 15 6.3.1. Test Limit .................................................................................................................................... 15 6.3.2. Test Procedure ........................................................................................................................... 15 6.3.3. Test Setting ................................................................................................................................ 15 6.3.4. Test Setup .................................................................................................................................. 15 6.3.5. Test Result ................................................................................................................................. 15 6.4. Power Spectral Density Measurement ...................................................................................... 16 6.4.1. Test Limit ................................................................…

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KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  1 Product Specifications for Approval Customer Name: Sales Coordinator Antenna band：2400-2500MHz Edition: A0 Production date： 2023-3-22 Number：1.0236.88 Structure： Jack.Peng Radio frequency： Mike.Li Examine and verify: Tom.Qin Ratify: Tom.Qin Customer confirmation Customer review： Customer Approval: Address：No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  2 INDEX. 1) Cover.......................................................................................... 1 2) Contents..................................................................................... 2 3) 2D Drawings.............................................................................. 3 4) Product specification parameters............................................... 4 5) Active and passive waveform matching test report.................5-9 KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  3 KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  4 Product characteristic specification table 1、Basic product characteristics： Product Type ： Copper tube -WIFI-1.13IPEX -1.13wire-grey-L=90MM DESCRIPTION VALUE Frequency range 2400-2500MHz Impedance 50Ω V.S.W.R Comparison sample waveform Gain 2.84DBi Radiation Omni-directional Polarization linear Vertical Admitted power 1W Connector IPEX CONN Operating temp -45°C~+85°C Storage temp -45°C~+85°C KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  5 1. Summary： This report to account for the measurement setup and result of the Antenna. The measurement setup includes s-parameter, The measured data for Antenna are presented and analysis. 2. S-Parameter Measurement S： A. Reflection coefficient: (a) Instrument：Network Analyzer. (b) Setup： (1) Calibrate the Network Analyzer by one port calibration using O.S.L. calibration kits. (2) Connect the antenna under test to the Network Analyzer. (3) Measure the S11(reflection coefficient) shown in Fig. 1. (4) Generally, the S11 is less than –10dB to ensure the 90% VSWR 2.0:1 power into antenna and only less than 10% power back to system. Fig.1 Antenna measured in Network Analyzer 3. S-Parameter Measurement Result S： KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  6 S-Parameter test data S： S-Parameter test image ： Passive value： Frequency MHz 2400 2450 2500 V.S.W.R 1.38 1.39 1.75 KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  7 2D、3D KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  8 KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province KUNSHAN RUI-QI ELECTRONICS CO.,LTD No. 39, Taoyuan Road, Zhangpu Town, Kunshan City, Jiangsu Province  9

Report No.: 2211RSU028-UT Test Setup Photograph Description: Radiated Spurious Emission Test Setup for Below 1GHz Description: Radiated Spurious Emission Test Setup for Above 1GHz Report No.: 2211RSU028-UT Description: Radiated Restricted Band Edge Test Setup Description: Conducted Test Setup