Radiolink F121 FPV Racing Drone Instruction Manual

Introduction

The Radiolink F121 is a lightweight and sensitive FPV racing drone designed for both indoor and outdoor use. It features three distinct flight modes, FPV capability with real-time image transmission, and a durable design with propeller protection. This mini quadcopter is an excellent choice for beginners, intermediate users, and educational purposes, offering an engaging and safe flying experience.

Image: The Radiolink F121 FPV Racing Drone, showcasing its compact design and propeller guards.

Image: The F121 drone is lightweight and sensitive, suitable for practice indoors and outdoors without space restrictions.

Image: The F121 drone being used for education and training.

Safety Information

• Disclaimer: Not suitable for children under 36 months.
• Always operate the drone in open areas, away from people, animals, and obstacles.
• Ensure propellers are securely attached and undamaged before each flight.
• Do not fly near airports or restricted airspace.
• Keep hands and face clear of rotating propellers.
• Use only the provided charger and battery.
• Avoid flying in strong winds or adverse weather conditions.

Package Contents

The contents of your package may vary depending on the version purchased (PNP, RTF Basic, or RTF FPV). Below is a general overview of common components for the RTF Basic Package, which includes the T8S controller and R8SM receiver. Please refer to your specific product variant for exact inclusions.

RTF Basic Package:

• F121 Drone with FPV camera x 1
• T8S Controller x 1
• R8SM Receiver x 1 (pre-installed on drone)
• 3.7V 660mA Li-po Battery x 2
• Spare Propeller Set x 1
• Night Light LED Board x 1 (pre-installed on drone)
• Radiolink Battery Charger CM120 x 1
• Carry Bag x 1
• User Instruction Manual x 1

Note: The PNP version does not include a receiver or Night Light LED accessories.

Image: Components included in the Basic Version package, such as the F121 drone, propellers, battery, and charger.

Setup

1. Charging the Battery

1. Connect the 3.7V 660mA Li-po battery to the Radiolink Battery Charger CM120.
2. Plug the CM120 charger into a USB power source (1A/2A recommended).
3. Allow approximately 2 hours for a full charge. The charger's indicator light will change to show charging status (refer to charger manual for specific light indications).

2. Propeller Installation (if not pre-installed)

• Ensure the drone is powered off.
• Match the propellers to their corresponding motor shafts. Propellers are typically marked (e.g., A or B) and should be installed on the correct motor to ensure proper flight direction.
• Gently push the propellers onto the motor shafts until they are secure.
• Verify that the propeller guards are also securely attached for safety.

Image: Detailed view of drone components, including propeller protectors for safety and the battery compartment.

3. Controller and Receiver Binding (RTF versions)

For RTF versions, the T8S controller and R8SM receiver are typically pre-bound. If re-binding is necessary:

1. Power on the T8S controller.
2. Power on the F121 drone.
3. Refer to the T8S controller and R8SM receiver manuals for specific binding procedures. Generally, this involves pressing a bind button on the receiver while powering it on, then initiating the bind sequence on the transmitter.
4. A solid blue LED light on the R8SM receiver indicates a successful bind.

Image: The T8S controller and R8SM receiver, highlighting features like APP parameter setup, 8-channel functionality, USB charging, and 2KM control distance.

Operating Instructions

Flight Modes

The F121 offers three flight modes to accommodate different skill levels:

• Altitude Hold Mode (Low-speed): Provides stable flight, ideal for beginners. The drone maintains a set altitude automatically.
• Altitude Hold Mode (High-speed): Offers more responsive control while still maintaining altitude, suitable for intermediate pilots.
• Stabilize Mode: Full manual control, allowing for advanced maneuvers and freestyle flying. Recommended for experienced pilots.

Image: Visual representation of the three flight modes and their applications.

First Person View (FPV)

The F121 is equipped with a 25mW 5.8G image transmission system and an integrated camera and OSD module. This allows for real-time video feedback to compatible FPV goggles or monitors, providing an immersive pilot experience. The transmission power can be adjusted to 100mW or 200mW if supported by your region's regulations.

Image: Key features of the F121 drone including FPV, Altitude Holding, Long Control Range, and Long Time Flight.

Image: FPV flying experience with the F121 drone and a monitor.

Thrown Flight

The F121 supports "Thrown Flight," allowing you to launch the drone into the air from any angle. After powering on and arming the motors, gently toss the drone into the air, and it will stabilize itself, ready for control.

Image: The drone's "Thrown Flight" capability, demonstrating its ability to be launched manually.

Night Flight

The RTF version of the F121 includes a Night Light LED board with green and blue LEDs. These lights enhance visibility during night flights, making it easier to track the drone's orientation and direction in low-light conditions.

Image: The F121 drone's LED lights for night flight.

Maintenance

• Cleaning: Gently wipe the drone with a soft, dry cloth after each use to remove dust and debris. Avoid using water or harsh chemicals.
• Propellers: Regularly inspect propellers for cracks, bends, or damage. Replace any damaged propellers immediately using the spare set provided.
• Motors: The F121 uses 8520 coreless motors with noise reduction technology to extend lifespan. Keep them free from obstructions.
• Battery Care: Store Li-po batteries in a cool, dry place. Do not overcharge or over-discharge. Disconnect the battery from the drone when not in use.
• Storage: When not in use, store the drone and its components in the provided carry bag to protect them from dust and physical damage.

Image: The F121 drone and its accessories stored in the portable carry bag.

Troubleshooting

• Drone does not power on:
  • Ensure the battery is fully charged and correctly connected.
  • Check for any visible damage to the battery or drone's power connections.
• Drone does not respond to controller:
  • Verify that the controller is powered on and has sufficient battery.
  • Confirm that the controller and receiver are properly bound.
  • Ensure you are within the remote control distance (approx. 100M for basic control, up to 2000M with R8SM receiver).
• Unstable flight/Drifting:
  • Calibrate the drone's gyroscope and accelerometer as per the controller's instructions.
  • Check for damaged or bent propellers and replace if necessary.
  • Ensure there are no strong air currents or winds affecting flight.
• No FPV video feed:
  • Ensure the FPV camera and image transmission module are powered on.
  • Verify that your FPV goggles/monitor are on the correct frequency and channel.
  • Check for any loose connections to the FPV system.

Specifications

Note: Some specifications may vary slightly based on the specific package version (PNP, RTF Basic, RTF FPV).

User Tips

• For optimal FPV experience, ensure your monitor or goggles are fully charged and properly tuned to the drone's 5.8GHz frequency.
• Practice in Altitude Hold (Low-speed) mode first to get accustomed to the controls before attempting more advanced modes.
• The drone's lightweight design makes it sensitive to wind; consider flying indoors or in calm conditions for the best experience.
• Take advantage of the portable carry bag for easy transport and protection of your drone and accessories.

Image: The F121 drone's mini size and portable design, making it convenient to carry.

Warranty and Support

For warranty claims, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your proof of purchase for any warranty-related requests. Detailed warranty terms and conditions may be available on the manufacturer's official website or included with your product documentation.