HOTRC 2.4G Transmitter and Receiver User Manual

1. Introduction

This manual provides detailed instructions for the operation and maintenance of your HOTRC CT-6B and CT-8B 2.4G transmitters and compatible F-series receivers. These systems are designed for remote control of various models including RC cars, boats, and tanks. Please read this manual thoroughly before use to ensure proper setup and safe operation.

2. Features

• Receiver Voltage Return: F-04AT, F-06A, F-06AT, F-08A, F-01A, and F-01AT receivers support voltage return functionality.
• Integrated Gyroscope: F-04AT, F-06AT, F-08AT, and F-01AT receivers feature built-in gyroscopes for enhanced model stability, preventing tail swinging and rollovers. Note: Gyroscope function is not supported for aircraft models.
• Expanded Channels: F-04A, F-04AT, F-06A, and F-06AT receivers include an additional level channel.
• Light Group Receivers: F-01A and F-01AT receivers integrate light group functions with 7 rows of LED interfaces for advanced lighting control.
• Extended Range: Receiver range is approximately 300-800 meters, with about 300m on the ground and 800m in the air. Actual range may vary based on environmental conditions.
• FHSS Technology: Utilizes FHSS (Frequency Hopping Spread Spectrum) algorithm for robust anti-interference performance, allowing multiple users to operate simultaneously without interference.

CT-6B Transmitter Specific Features:

• Standard LCD display screen for clear information.
• Voltage return and signal feedback functions.
• Type-C charging port, capable of charging 18650 batteries (battery not included).
• Loss of control protection and locking functions for safety.
• Mixed control, channel forward/reverse, and travel settings.
• Automatic shutdown after 15 minutes of inactivity to conserve power.
• Ergonomic design for single-handed operation with a dual-color sponge wheel and simulated brake disc.
• Rich channel buttons including two knob channels, a three-speed switch, and three key channels.

CT-8B Transmitter Specific Features:

• 2.4-inch TFT color screen for enhanced visual feedback.
• Standard coach function for training and shared control.
• Standard return channel function.
• Type-C charging port, capable of charging 18650 batteries (battery not included).
• Cruise control, loss of control protection, and locking functions.
• Automatic shutdown after 15 minutes of inactivity.
• Advanced 2.4G frequency hopping technology with strong anti-interference.
• Powered by a 32-bit ARM core microcontroller and 2.4G module with PA amplifier.
• Newly designed rocker assembly with four ball bearings and high-precision potentiometers for smooth, accurate control.
• Simple and comprehensive UI with real-time parameters for each channel.
• Adjustable throttle trigger spring force and front/rear positions.
• Rich channel buttons including two knob channels, a three-speed switch, and five key channels.

3. Package Contents

The standard package typically includes the following items. Please check your package upon receipt.

• Product Box
• Remote Control (CT-6B or CT-8B Transmitter)
• Receiver (Specific F-series model, e.g., F-01A, F-08AT, depending on your purchase)
• Voltage Return Line
• Data Cable
• Instruction Manual

4. Specifications

Transmitter Specifications

Receiver Specifications

*Note: Remote control distance is for reference only, and actual use may vary depending on different environments.

5. Setup

5.1 Transmitter Power Supply

• The CT-6B and CT-8B transmitters are powered by one 18650 battery (not included).
• Insert the 18650 battery into the battery compartment located at the bottom of the handle. Ensure correct polarity.
• The transmitter can directly charge the 18650 battery via its Type-C USB port.

5.2 Receiver Connection

Connect your servos, ESCs, and other components to the appropriate PWM channels on the receiver. Refer to the diagrams below for specific connections.

• General Connections: Channels 1-8 are typically used for steering, throttle, and auxiliary functions.
• Voltage Return: For receivers with voltage return function, connect the provided voltage return line to the "EXT.V" port on the receiver and to your model's battery to monitor voltage feedback on the transmitter screen.
• Light Group (F-01A/F-01AT): These receivers have dedicated LED interfaces. Connect your model's lights (e.g., turn signals, headlights) to the corresponding ports.

5.3 Binding Procedure

To establish communication between the transmitter and receiver, a binding process is required. The receiver features a "BIND" button. Consult the full instruction manual for your specific receiver model for detailed binding steps.

6. Operating Instructions

6.1 Transmitter Controls Overview

Familiarize yourself with the main controls and display of your CT-6B or CT-8B transmitter.

• Power Button: Long press to turn the remote control on or off. Short press to return to the previous menu.
• Directional Joystick/Wheel: Controls steering.
• Throttle Trigger: Controls acceleration/braking. The spring force and front/rear positions of the trigger are adjustable for personalized feel.
• Channel Buttons (CH3-CH8): These include knob channels (VRA, VRB) and key channels (SWA, SWB, A, B, C, D) for controlling auxiliary functions.
• Wheel Button (CT-6B): Short press to scroll up/down or select functions. Long press to confirm selection. Press and hold to clear the timer.

6.2 Screen Display and Settings

The transmitter's screen provides real-time information and access to various settings.

• Real-time Data: View transmitter voltage, return voltage (if supported by receiver), signal strength, and individual channel values (CH1-CH8).
• Model Settings: Configure up to 8 different models, including channel mapping, direction mixing, and curve settings.
• System Settings: Access general system configurations, timer functions, and calibration options.
• Electronic Fine Tuning: Adjust channel trims for precise control.

6.3 Coach Function

The CT-8B transmitter supports a coach function. By connecting two remote controls with a data cable, one can act as a master and the other as a slave, enabling shared control for teaching and training purposes.

7. Maintenance

• Cleaning: Keep the transmitter and receiver clean and free from dust and debris. Use a soft, dry cloth for cleaning. Avoid using solvents or harsh chemicals.
• Storage: Store the devices in a cool, dry place away from direct sunlight and extreme temperatures. Remove the 18650 battery from the transmitter if storing for extended periods.
• Battery Care: Ensure proper charging and storage of the 18650 battery. Do not overcharge or deep discharge.
• Rocker Assembly: The CT-8B features a durable rocker assembly with ball bearings. Avoid excessive force or impact to maintain its precision.

8. Troubleshooting

• No Power: Ensure the 18650 battery is correctly inserted and charged. Long press the power button to turn on the transmitter.
• No Signal/Loss of Control: Verify that the transmitter and receiver are properly bound. Check the signal strength indicator on the transmitter. Ensure the receiver is powered correctly. The system includes a loss of control protection function which may activate if signal is lost.
• Erratic Behavior: Check all wiring connections to the receiver. Ensure no interference from other 2.4Ghz devices. Recalibrate the transmitter if necessary through the system settings.
• Automatic Shutdown: The transmitter will automatically shut down after 15 minutes of inactivity. This is a power-saving feature, not a malfunction.
• Gyroscope Issues: If using a gyroscope-equipped receiver, ensure it is not being used with an aircraft model, as this function is not supported for aircraft.

9. User Tips

• Compatibility: Always verify the compatibility of your chosen receiver with your specific RC model (car, boat, or tank) and its components (servos, ESCs, lights).
• Environmental Factors: The effective remote control distance can be influenced by environmental factors such as obstacles, electromagnetic interference, and weather conditions. Always operate your model in an open area.
• Firmware Updates: The CT-8B transmitter supports upgrade features. Check the manufacturer's website for any available firmware updates to improve performance or add new features.

10. Warranty & Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.

11. Compliance

⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.