The FrSky TD SR18 Tandem Receiver is a flagship dual-band receiver designed for the most demanding RC applications. Operating simultaneously on both 2.4GHz and 900MHz frequencies, it delivers ultra-low latency control, exceptional long-range performance, and outstanding resistance to interference-ensuring maximum reliability in all conditions.

Built with a triple antenna system (2× 2.4GHz and 1× 900MHz), the TD SR18 provides wide, multi-directional signal coverage for secure connectivity. Its advanced dual power system, using dual XT30 inputs, automatically balances power consumption between sources, offering redundancy and stability for high-value or large-scale models.

With 18 fully configurable channel ports, this receiver offers unmatched flexibility. Each port can be assigned as PWM, SBUS, FBUS, or S.Port, enabling seamless integration with complex setups and advanced telemetry systems. FBUS support further simplifies wiring by combining control and telemetry into a single connection.

The integrated ADV Stabiliser system provides superior flight control with programmable stabilised channels and multiple flight modes, including Auto-Level, Hover, and Knife-Edge. Enhanced by built-in high-precision telemetry sensors (altitude, vertical speed, etc.), the TD SR18 gives pilots real-time insight and improved flight performance.

Additional features such as built-in current and voltage sensors, black box data logging, and OTA firmware updates make this receiver a complete high-performance solution for serious RC pilots.

Key Features:

• Simultaneous dual-band operation (2.4GHz & 900MHz TD mode)
  
• Triple antenna design for superior signal coverage and reliability
  
• 18 fully configurable channel ports (PWM / SBUS / FBUS / S.Port)
  
• Advanced ADV stabilisation system with programmable flight modes
  
• Built-in telemetry sensors (altitude, vertical speed, current, voltage)
  
• Dual XT30 power inputs with automatic load balancing
  
• SBUS In & Out support for redundancy and expansion
  
• Integrated black box data recording
  
• Built-in power switch function (via optional NFC switch panel)
  
• 4ms race mode with telemetry
  
• Over-The-Air (OTA) firmware updates
  
• High current handling for large-scale and high-power models

Perfect For:

• Large-scale and complex RC aircraft
  
• Advanced pilots requiring maximum channel flexibility
  
• High-performance and long-range flying applications
  
• Models with multiple servos and telemetry devices
  
• FrSky Tandem system users

Product Summary:
The FrSky TD SR18 is a premium 18-channel dual-band receiver offering ultimate flexibility, advanced stabilisation, and robust power management. Designed for professional and high-end RC setups, it delivers unmatched reliability, control, and telemetry insight.

Specifications:

• Brand: FrSky
  
• Model: TD SR18
  
• Frequency: 900MHz & 2.4GHz (dual-band)
  
• Channels: 18 configurable outputs
  
• Output Types: PWM / SBUS / FBUS / S.Port
  
• Stabilisation: ADV Stabiliser (advanced programmable system)
  
• Telemetry: Built-in sensors (altitude, vertical speed, current, voltage)
  
• Black Box: Yes
  
• Operating Voltage: 4V – 12V (recommended 2S battery)
  
• Operating Current: ≤195mA
  
• Current Handling:
  
  • Continuous: ≤30A
    
  • Peak: ≤60A
    
• Dimensions: 53 × 40 × 16mm
  
• Weight: 29.1g
  
• Antennas: Triple (2 × 2.4GHz, 1 × 900MHz)
  
• Antenna Connector: IPEX1
  
• Power Input: Dual XT30 connectors
  
• Voltage Measurement: 0–35V (via AIN, 1:10 divider)
  
• Firmware Updates: OTA supported
  
• Compatibility: FrSky Tandem transmitters & TD protocol RF modules

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