HotRC CT-6A/CT-6B 2.4Ghz Radio System

1. Introduction

Thank you for choosing the HotRC CT-6A/CT-6B 2.4Ghz Radio System. This system provides reliable and interference-free control for your RC models, including cars, boats, aircraft, and tanks. Featuring advanced FHSS frequency hopping technology and a 32-bit ARM core microcontroller, it ensures stable performance and extended range. This manual will guide you through the setup, operation, and maintenance of your new radio system.

2. Package Contents

Please check the contents of your package against the list below. If anything is missing or damaged, contact your retailer.

CT-6A Package:

• CT-6A Remote Control Transmitter
• F-06A PWM Receiver
• 1.25x2P Wire
• Instruction Book
• Packaging Box

Image: CT-6A Product Packaging showing the remote control, receiver, wire, and manual.

CT-6B Package:

• CT-6B Remote Control Transmitter
• F-08A PWM Receiver
• Voltage Return Line
• Charging Line
• Instruction Book
• Packaging Box

Image: CT-6B Product Packaging showing the remote control, receiver, voltage return line, charging line, and manual.

3. Key Features

• Advanced 2.4Ghz FHSS Technology: New independently owned frequency hopping technology with strong anti-interference performance and stability, allowing multiple users in the same area without interference.
• High-Performance Microcontroller: Main control chip features a 32-bit ARM core microcontroller and a 2.4G module with PA amplifier for enhanced range.
• Extended Control Range: Up to 300 meters on the ground and 800 meters in the air (actual distance may vary depending on environment).
• LCD Display: Visually displays transmitter voltage, return voltage, return signal, and mixed control status.
• Versatile Power Supply: Supports 18650 battery, 2S lithium battery, and AA batteries (batteries not included).
• Type-C Port: Features a Type-C interface for direct charging of 18650 batteries and simulation functions.
• Ergonomic Design: Unique design structure allows for comfortable single-handed operation with a dual-color sponge wheel.
• Control Functions:
  • Lock Function: Prevents accidental operation of the remote control.
  • Mixed Control: CH1/CH2 and CH5/CH6 can be set for mixed control modes.
  • Runaway Protection: Includes a loss of control protection function.
  • Channel Reversing: CH1 & CH2 can be set with both positive and negative positions.
  • Automatic Shutdown: Transmitter automatically shuts down after fifteen minutes of inactivity.
  • Electronic Fine Tuning: Precise adjustments for channels.
• Receiver Feedback: Standard receivers (F-06A/F-08A) provide feedback on battery voltage and receiver signal.

Image: Diagram illustrating the HotRC 2.4Ghz frequency hopping technology chip.

Image: Explanation of Lock Function and Hybrid Control Function on the CT-6A transmitter.

4. Specifications

4.1. CT-6A Transmitter Specifications

Image: Production Information table for CT-6A.

4.2. CT-6B Transmitter Specifications

Image: Production Information table for CT-6B.

4.3. F-06A Receiver Specifications

Image: Specifications table for the F-06A receiver.

4.4. F-08A Receiver Specifications

Image: Specifications table for the F-08A receiver.

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

5. Setup

5.1. Transmitter Battery Installation

The HotRC CT-6A/CT-6B transmitters support multiple power supply options:

• One 18650 battery
• One 2S lithium battery
• Four AA batteries

To install batteries:

1. Open the battery compartment cover on the bottom of the transmitter handle.
2. Insert the chosen battery type, ensuring correct polarity for AA batteries or proper connection for 18650/2S LiPo.
3. Close the battery compartment cover securely.

Note: Batteries are NOT included and must be purchased separately. The transmitter can directly charge 18650 batteries via the Type-C port.

Image: CT-6A battery compartment showing options for 18650, 2S LiPo, and AA batteries.

Image: CT-6B battery compartment showing options for 18650, 2S LiPo, and AA batteries.

5.2. Receiver Connection

Connect the receiver to your model's components (servos, ESC, etc.) according to the wiring diagram. Ensure all connections are secure and correctly oriented.

Image: F-06A Receiver wiring diagram showing connections for digital/simulated steering gear, voltage return interface, and code matching button.

Image: F-08A Receiver wiring diagram showing connections for digital/simulated steering gear, voltage return interface, and code matching button.

The receiver is equipped with a return function, which can return the voltage of the power battery and the signal of the receiver. It includes a voltage return interface and a connecting cable.

5.3. Binding the Transmitter and Receiver

To establish communication between the transmitter and receiver (binding):

1. Ensure both the transmitter and receiver are powered off.
2. Connect power to the receiver. The receiver's LED should start flashing, indicating it's in binding mode.
3. Press and hold the 'Code matching button' on the receiver.
4. While holding the button, power on the transmitter.
5. The receiver's LED should turn solid, indicating successful binding.
6. Release the 'Code matching button' and power cycle both the transmitter and receiver to confirm the binding.

6. Operation

6.1. Transmitter Controls Overview

Familiarize yourself with the main controls of your HotRC transmitter:

Image: Labeled diagram of CT-6A controls including charging port, internal antenna, directional joystick, throttle trigger, 18650 battery compartment, AA battery compartments, and 2S lithium battery interface.

Image: Labeled diagram of CT-6B controls including charging port, internal antenna, directional joystick, throttle trigger, 18650 battery compartment, operation panel channel buttons, and other key features.

6.2. LCD Display Information

The LCD screen provides real-time information about your radio system:

• Transmitter Voltage (T): Displays the current voltage of the transmitter battery.
• Receiver Voltage (R): Displays the voltage returned from the receiver (if connected and configured).
• Signal Strength: Indicates the strength of the radio signal.
• Lock Icon: Shows if the control lock function is active.
• Mixed Control Icon: Indicates if mixed control is enabled.
• Channel Indicators (CH5, CH6): Displays current settings or positions for auxiliary channels.
• Fine Tuning Indicators (CH1, CH2): Shows the current fine-tuning adjustments.

Image: CT-6A LCD display showing transmitter voltage, return voltage, signal, lock, and mixed control icons.

Image: CT-6B LCD display showing transmitter voltage, return voltage, signal, lock, and mixed control icons.

6.3. Special Functions

• Lock Function: To prevent accidental operation, the setting function keys can be locked. Refer to the manual's specific instructions for activating/deactivating the lock.
• Mixed Control Function: CH1 & CH2 can be mixed control, and CH5 & CH6 can also be mixed control. This allows for complex control schemes for multi-axis vehicles.
• Runaway Protection (Loss of Control Protection): This feature helps prevent your model from running away if signal is lost. Configure this function according to your model's requirements.
• Channel Positive and Negative: CH1 & CH2 can be set with both positive and negative positions, allowing for reversing servo direction as needed.
• Automatic Shutdown: If the remote control is not in use, it will automatically shut down within fifteen minutes to conserve battery life.
• Electronic Fine Tuning: Use the trim buttons (e.g., ST.TRIM, TH.TRIM) to make small adjustments to steering and throttle center points for precise control.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the transmitter and receiver. Avoid using solvents or harsh chemicals.
• Storage: Store the radio system in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries from the transmitter if storing for extended periods.
• Battery Care: Always use appropriate chargers for your batteries. Do not overcharge or over-discharge LiPo batteries.
• Inspection: Regularly check all cables and connectors for signs of wear or damage.

8. Troubleshooting

• No Power: Check battery installation and charge level. Ensure the power switch is in the 'ON' position.
• No Signal/Loss of Control: Re-bind the transmitter and receiver. Check the distance between the transmitter and receiver. Ensure no major obstructions or strong interference sources are present.
• Erratic Servo Movement: Check all wiring connections to the receiver. Ensure servos are properly connected to the correct channels. Verify battery voltage to the receiver is sufficient.
• Transmitter Display Not Working: Check transmitter battery voltage. If the issue persists, contact support.

9. User Tips

• Always perform a range check before operating your model, especially in new environments.
• Ensure all batteries (transmitter and model) are fully charged before use.
• Familiarize yourself with all transmitter functions and settings in a safe, open area before operating your model at speed or in complex maneuvers.
• Keep the transmitter's antenna pointed towards your model for optimal signal reception.
• Consider using a neck strap for the transmitter during operation for added security and comfort.

10. Warranty and Support

For warranty information or technical support, please refer to the contact details provided by your retailer or visit the official HotRC website. Keep your proof of purchase for any warranty claims.