RadioMaster TX16S MKII MAX Radio Control System

1. Introduction

Thank you for purchasing the RadioMaster TX16S MKII Multi-protocol radio system. RadioMaster is proud to bring this ground-breaking product to the market. The MKII version has had several improvements thanks to feedback from users like you. This quick start reference guide will help you get started with your new TX16S MKII radio.

The TX16S MKII remote control device is suitable for all types of model products as well as any other equipment you may build, as long as you can assemble it, then RadioMaster will be able to control it.

The TX16S MKII uses a powerful operating system called EdgeTX. For more information, visit the EdgeTX website.

Image: RadioMaster TX16S Mark II branding.

2. Safety Information

WARNING:

Many radio control models are equipped with powerful motors and sharp spinning propellers. Please exercise caution when working on models. Ensure power is disconnected from your models and remove propellers when performing maintenance.

Do not operate the TX16S MKII remote control system under the following conditions:

• In severe weather or strong windy conditions, such as rain, hail, snow, storms or electromagnetic environments.
• In any situation where visibility is limited.
• In areas where people, property, high-voltage power lines, public roads, vehicles or animals may be present.
• If you feel tired or unwell, or under the influence of drugs or alcohol.
• If the remote control or model seems to be damaged or not working properly.
• In areas with high 2.4GHz interference or where 2.4GHz radio is prohibited.
• When the radio's battery voltage is too low to be used.
• In areas where local regulations prohibit the use of R/C aircraft.

FCC Disclaimer:

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This product contains a radio transmitter with wireless technology which has been tested and found to be compliant with the applicable regulations governing a radio transmitter in the 2.400GHz to 2.4835GHz frequency range.

Antenna Separation Distance:

When operating your RadioMaster transmitter, please be sure to maintain a separation distance of at least 20 cm between your body (excluding fingers, hands, wrists, ankles and feet) and the antenna to meet RF exposure safety requirements as determined by FCC regulations.

3. Package Contents

The RadioMaster TX16S MKII MAX package typically includes:

• TX16S MKII MAX Radio Control System
• Battery Tray (for 18650 cells, batteries not included)
• USB-C Cable
• Screen Protector
• Flat and Raised Grips (interchangeable)
• Quick Start Guide

Image: RadioMaster TX16S MKII MAX with included accessories.

4. Setup

4.1. Transmitter Overview

Familiarize yourself with the controls and ports of your TX16S MKII MAX.

Image: Front panel diagram of the TX16S MKII MAX, showing labels for antenna, handle, S1/S2 dials, 6-position buttons, SH/SG/SC/SD switches, LS/RS slider pots, speaker, left/right gimbals, power LED, power button, T1-T6 trim buttons, lanyard loop, SYS/RTN/PAGE/TELE buttons, MDL button, menu wheel, and 4.3" color screen.

4.2. Gimbal Adjustment

The V4.0 Hall Gimbals can be adjusted without disassembly for stick travel, tension, and mode setting.

Image: Diagram showing gimbal adjustment points. 1/2 Stick Travel Limiter: Turn clockwise to decrease travel, counter-clockwise to increase. 3 Horizontal Axis Tensioner (Left-Right): Turn clockwise to increase tension, counter-clockwise to decrease. 4 Gimbal Mode Setting: Turn clockwise to disable self-centering (Throttle), counter-clockwise to enable self-centering (Elevator). 5 Vertical Axis Tensioner (Up-Down): Turn clockwise to increase tension, counter-clockwise to decrease.

4.3. Ports and Connections

The TX16S MKII MAX features various ports for connectivity and charging.

Image: Side view of the TX16S MKII MAX showing UART Port, Charging Port (USB-C), and SD Card Slot.

Image: Close-up of the top ports showing USB Data port and TRS 3.5mm Trainer Socket.

4.4. Battery Installation & Charging

The TX16S MKII has built-in USB-C charging for 3.7V Lithium cells. The charging circuit is designed for 2x 3.7V Li-ion 18650 unprotected cells or 2x 3.7V Li-poly cells (2S 7.4V LiPO pack) only with a nominal cell voltage of 3.7V and maximum charge capacity of 4.2V.

• Approved for Use: 2x 3.7V Li-ION 18650 (7.4V using supplied tray), 2x 3.7V Li-ION 21700 (Assembled as 7.4V 2S Battery pack), 2x 3.7V Lithium-polymer (Assembled as 7.4V 2S Battery pack).
• Do Not Use: 2S 6.6V LiFE battery pack, 18650 lithium-ion cells with a nominal voltage of 3.6V or LiFEP04 18650 Round cells. Using the built-in USB charger with incorrect battery types and voltage may cause damage to the remote control or fire.
• If using Li-ion, ensure the cells are not protected and are button-top cells.
• Check the health and condition of the batteries regularly. DO NOT use damaged cells. Never charge your device unattended. Always charge in a safe area away from flammable materials. If the remote control gets wet or damaged in any way, DO NOT charge it.

RadioMaster does not assume any responsibility for any adverse consequences caused by the use or misuse of this product.

4.5. Firmware Update

The TX16S MKII is pre-installed with factory approved EdgeTX firmware. To download the latest software manual and firmware, please visit the RadioMaster website: www.radiomasterrc.com.

Further firmware information:

• EdgeTX: www.edgetx.org
• ExpressLRS: www.expresslrs.org
• Multi Protocol Module: www.multi-module.org

5. Operating Instructions

5.1. Model & Protocol Selection

The TX16S MKII MAX supports various internal RF options (4-in-1 multi-protocol or ELRS 2.4GHz) and external module bays.

• Long press the MDL button to enter the model settings, select MULTI in the SETUP page, and select the protocol to be used in the sub-options. The system will automatically turn on the corresponding RF module according to the protocol you selected.
• The 'Bind' [BND] button is used to start the binding process.
• The 'Range' [RNG] button can reduce the power to 1/30 to facilitate testing of remote-control distance.

Image: Visual representation of available MULTI (4-in-1) and ExpressLRS versions.

Image: Rear view of the TX16S MKII MAX highlighting the external module bay, compatible with MasterFire and TBS Crossfire modules.

5.2. Binding Instructions

1. TURN OFF the transmitter.
2. Cycle power to the receiver 3 times; the receiver LED will flash twice, indicating bind mode.
3. TURN ON the transmitter, long press the SYS button and choose ExpressLRS LUA under the TOOLS menu. Scroll to [Bind] and press enter.
4. The LED on the receiver should now be solid, indicating a successful bind.

5.3. EdgeTX Companion Software

Program all your model and radio settings from your PC with EdgeTX Companion PC software.

Image: The TX16S MKII MAX connected to a laptop running EdgeTX Companion software for programming.

Image: Graphic indicating support for both EdgeTX and OpenTX firmware.

6. Maintenance

6.1. Gimbal Care

The V4.0 Hall Gimbals are designed for durability. Keep them free from dust and debris. Periodically check the tension and centering, adjusting as needed per the setup instructions.

6.2. Battery Care

Always use approved battery types and follow safe charging practices. Do not overcharge or fully discharge batteries. Store the transmitter in a cool, dry place when not in use, and remove batteries if storing for extended periods.

6.3. Cleaning

Use a soft, dry cloth to clean the transmitter's exterior. Avoid using solvents or abrasive cleaners, which can damage the plastic and screen. For the screen, use a microfiber cloth specifically designed for electronics.

7. Troubleshooting

• Transmitter not powering on: Check battery installation and charge level. Ensure the power button is pressed correctly.
• No signal to receiver: Verify model and protocol selection. Ensure the receiver is properly bound to the transmitter. Check antenna connection.
• Gimbal erratic behavior: Check for physical obstructions. Recalibrate gimbals through the EdgeTX menu.
• Firmware issues: If the remote control becomes inoperable after a firmware update, refer to the official RadioMaster website for recovery procedures or contact support.
• General performance issues: Ensure firmware is up-to-date. Consult the EdgeTX documentation for advanced settings and diagnostics.

8. Specifications

Image: Dimensions of the TX16S MKII MAX: 183mm width, 212mm height, 66mm depth.

9. User Tips

• Verify Gimbal Type: If specific gimbal features like AG01 CNC are important to you, confirm the exact gimbal version included with your purchase. The TX16S MKII MAX comes with V4.0 Hall Gimbals, with AG01 as an optional upgrade.
• Explore EdgeTX: The EdgeTX operating system is powerful. Take time to explore its features and customization options for your models.
• Keep Firmware Updated: Regularly check the official RadioMaster website for the latest firmware updates for both the radio and its internal modules (4-in-1 or ELRS) to ensure optimal performance and compatibility.

10. Warranty & Support

If there is any problem with your remote control hardware, please keep the proof of purchase and contact the retailer where you purchased the TX16S MKII.

You may also visit the RadioMaster warranty support page: www.radiomasterrc.com/contact.

11. Statement of Compliance

11.1. Disclaimer

⚠️ For recreation use only. Illegal modification of drones/planes is prohibited. Please also pay attention to the relevant laws and regulations on the use of drones/planes in your country/area to ensure legal use.

11.2. EU Simple Declaration of Conformity

RadioMaster declares the radio equipment TX16S MKII is in compliance with EU directives Directive 2014/53/EU.

Manufacturer: ShenZhen RadioMaster Co., Ltd, 3th Floor, Yangtian Building, No. 18 Yangtian Road, Xin'an Street, Baoan District, Shenzhen, Guangdong.

FCC ID: 2AV3G-TX16S 2A337-TX165

Full text of the declaration of conformity is available at: www.radiomasterrc.com.