1. Introdución
This manual provides essential information for the proper setup, operation, and maintenance of your LDARC X-BOSS FM900 2.4GHz FASST Receiver. Please read this manual thoroughly before using the product to ensure safe and efficient operation.
2. Produto rematadoview

Image: The LDARC X-BOSS FM900 receiver, a compact circuit board featuring surface-mount components, an integrated antenna, and clearly labeled 'FM900' branding. This image illustrates the physical design and component layout of the receiver.
3. Características
- Offers great reliability, stable signal link, precision antenna, and high sensitivity.
- Compact and lightweight design for various applications.
- Integrated LNA (Low Noise Amplifier) for enhanced signal reception.
- RSSI (Received Signal Strength Indicator) output for real-time signal monitoring.
4. Especificacións
| Especificación | Detalle |
|---|---|
| Elemento | FM900 Receiver |
| Peso | 1.2 g |
| Dimensións | 11.5 mm x 21 mm |
| Voltage | 4-6 V |
| Rango de traballo | >900m (air distance without electromagnetic interference) |
| Protocolo | RÁPIDO |
| Saída 1 | LNA |
| Saída 2 | RSSI |
| Transmisores compatibles | T8FG, T14SG, T16SZ, T18SZ, T18MZ, T32MZ TX |
| Real-Time RSSI Compatibility | F3, F4, F7, etc. flight controllers |
5. Contido do paquete
- 1x LDARC X-BOSS FM900 Receiver
6. Configuración
6.1. Instalación
Carefully connect the receiver to your flight controller or power source, ensuring correct polarity and signal connections. Mount the receiver securely in your model, away from sources of electrical interference. Position the antenna for optimal signal reception, avoiding obstructions.
6.2. Procedemento vinculante
To establish communication between your transmitter and the FM900 receiver, follow these general binding steps:
- Power on your transmitter and select the FASST protocol.
- Place your transmitter in binding mode (refer to your transmitter's manual for specific instructions).
- Apply power to the FM900 receiver. The receiver's LED indicator should begin to flash, indicating it is ready for binding.
- Once the binding process is complete, the receiver's LED will typically turn solid green, indicating a successful connection.
- Power cycle both the transmitter and receiver to confirm the binding is retained.
7. Instrucións de funcionamento
After successful binding and installation, ensure your transmitter and receiver are powered on before operating your model. Always perform a range check and verify all control surfaces respond correctly before flight. Monitor the RSSI output on your flight controller or OSD (On-Screen Display) to ensure a strong signal link during operation.
8. Mantemento
- Manteña o receptor limpo e libre de po, sucidade e humidade.
- Regularly inspect antenna connections for damage or loose contacts.
- Evite expoñer o receptor a temperaturas extremas ou á luz solar directa durante períodos prolongados.
- Ensure proper ventilation around the receiver during operation.
9 Solución de problemas
- No Signal/Loss of Link: Re-check binding procedure. Ensure transmitter and receiver are powered on. Verify antenna connection and placement. Check for potential interference sources.
- Sinal intermitente: Inspect antenna for damage. Ensure receiver is not too close to high-current wires or other electronic components that may cause interference.
- O receptor non se acende: Verifique as conexións de enerxía e voltage supply (4-6V). Check for shorts or incorrect wiring.
- Resposta de control incorrecta: Confirm correct channel mapping in your flight controller or model setup. Re-bind the receiver if necessary.
10. Información sobre garantía e soporte
LDARC products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support, please reach out to your authorized LDARC dealer or visit the official LDARC websitio de asistencia.




