The FrSky Tandem TD MX is a compact, lightweight dual-band receiver designed to operate simultaneously across both 2.4GHz and 900MHz frequencies. By combining both bands in Tandem TD mode, the receiver delivers low-latency control and long-range performance with enhanced reliability and resistance to interference.

The TD MX features a triple-antenna design for broad, multi-directional signal coverage, including two external 2.4GHz antennas and a newly designed compact 900MHz antenna. Despite its small 25 × 21 × 4mm footprint and 7.1g weight, it provides a useful range of connectivity options for advanced RC aircraft and models.

With four PWM channels plus SBUS Out, S.Port and FBUS connectivity, the TD MX is suitable for compact installations where flexible signal and telemetry integration is important. The built-in Black Box function can record power- and signal-related data during unusual flight conditions, while OTA firmware updates make future maintenance straightforward.

Key Features

• Simultaneous dual-band operation at 2.4GHz and 900MHz
  
• Tandem TD protocol for low-latency, long-range control
  
• Enhanced reliability and anti-interference performance
  
• Triple-antenna design for multi-directional signal coverage
  
• Two external 2.4GHz antennas using IPEX1 connectors
  
• Newly designed compact 900MHz antenna
  
• Built-in Black Box function for recording power- and signal-related flight data
  
• 4ms Race Mode with telemetry
  
• Long control range
  
• Over-The-Air (OTA) firmware updates
  
• 4 PWM output channels
  
• SBUS Out
  
• S.Port support
  
• FBUS support for simplified wiring and telemetry integration
  
• Compact and lightweight design

Perfect For

• RC aircraft and model aircraft
  
• Compact models where receiver size and weight are important
  
• Pilots using FrSky Tandem transmitters
  
• Setups requiring simultaneous 2.4GHz and 900MHz operation
  
• Models using advanced telemetry devices such as compatible Neuron ESCs and sensors
  
• Installations benefiting from FBUS connectivity and simplified wiring
  
• Applications requiring long-range and low-latency control

Product Summary

The FrSky Tandem TD MX combines simultaneous 2.4GHz and 900MHz operation with a compact 4-channel design. Its triple-antenna configuration, 4ms Race Mode, Black Box recording, OTA updates and SBUS/S.Port/FBUS connectivity make it a versatile receiver for modern FrSky Tandem systems.

Specifications

• Model: TD MX
  
• Frequency: 2.4GHz & 900MHz
  
• Protocol: Tandem TD
  
• Dimensions: 25 × 21 × 4mm (L × W × H)
  
• Weight: 7.1g
  
• Operating voltage: 3.5–10V
  
• Recommended battery: 2S
  
• Operating current: ≤185mA @ 5V
  
• PWM channels: 4
  
• Antennas: Triple 2.4GHz/900MHz antenna system
  
• 2.4GHz antennas: 2 × external, IPEX1
  
• 900MHz antenna: 1 × newly designed compact antenna
  
• Connectivity: SBUS Out, S.Port, FBUS
  
• Race Mode: 4ms with telemetry
  
• Black Box: Yes
  
• OTA firmware update: Yes
  
• Compatibility: FrSky Tandem series transmitters and TD-protocol-capable RF modules
  
• Compatibility note: Requires a Tandem-series transmitter with a dual-band transmitter module

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