FrSky Tandem TD MX Dual-Band 2.4GHz/900MHz Receiver

The FrSky Tandem TD MX is a dual-band 2.4GHz/900MHz RC receiver with a triple-antenna design that delivers long-range, low-latency control and multiple telemetry/output options for FPV drones and RC models.

The TD MX combines simultaneous dual-band reception with a compact build and robust connectivity to serve pilots who need reliable link performance in demanding environments. Built for Tandem-series radios and TD-protocol RF modules, the receiver supports OTA updates, multiple output formats, and a race-ready 4ms mode while offering redundancy and telemetry for advanced setups.

How does the dual-band Tandem system improve connection reliability?

By listening on both 2.4GHz and 900MHz at the same time, the receiver reduces the risk of link interruption from band-specific interference. The TD protocol coordinates both bands to provide a seamless handover and more robust reception across varied distances and environments.

• Simultaneous 2.4GHz and 900MHz operation for fewer dropouts
• Triple antenna geometry for multi-directional coverage
• Designed for Tandem-series transmitters and TD RF modules

What performance can I expect for racing and long-range flights?

The TD MX supports a 4ms race mode for low-latency response and offers telemetry and long-control-range capability suitable for serious pilots. Depending on antenna placement and local regulations, it can achieve very extended links when paired with appropriate RF modules and aerials.

• 4ms race mode for fast control feedback
• Telemetry via S.Port and inverted S.Port for real-time data
• Reported long-range potential with correct RF setup and antennas

What outputs and interfaces does the receiver provide for flight controllers?

The Tandem TD MX offers flexible connectivity to integrate with a wide range of flight controllers and setups. It includes both SBUS input and output, FBUS support, plus four independent PWM channels for legacy servos or redundant configurations.

• SBUS Out and SBUS In for direct flight controller links and redundancy
• FBUS and S.Port telemetry compatibility for sensors and OSDs
• Four PWM channels for servo connections or backup systems

How do firmware updates and antenna design affect long-term use?

Over-the-air firmware updates simplify keeping the receiver current without disassembly, while the triple-antenna layout increases odds of clean reception in complex flight conditions. Together these design choices extend usability and ease maintenance for evolving setups.

• OTA firmware updates for convenient feature and bug fixes
• Two external 2.4GHz IPEX1 antennas plus a dedicated 900MHz aerial
• Hardware designed for multi-directional signal resilience

Who is this for: The FrSky Tandem TD MX is aimed at FPV racers, long-range flyers, and advanced RC modelers who require a compact receiver with dual-band redundancy, telemetry, and flexible outputs. If you use Tandem-series radios and TD-capable RF modules—or plan to build a setup that benefits from OTA updates, low-latency race modes, and multiple output formats—the TD MX provides a future-proof communication backbone.