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Matek ELRS 2.4GHz True Diversity Receiver, R24-TD
Brand: Matek
Product Code: R24-TD
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Matek ELRS 2.4GHz True Diversity Receiver, R24-TD
Description
1. Product Summary
1.1. Product Description
The Matek ExpressLRS 2.4GHz True Diversity Receiver (R24-TD) is a next-generation dual-antenna receiver designed for reliable long-range control and telemetry. It operates on the ExpressLRS (ELRS) open-source protocol, offering ultra-low latency and robust signal performance in the 2.4 GHz ISM band (2400–2480 MHz). The receiver features True Diversity architecture, utilizing two RF front-ends and dual antennas for superior reception quality, minimized signal loss, and enhanced range stability — ideal for demanding UAV, FPV, and fixed-wing applications.
1.2. Product Features
- Operates on the 2.4 GHz ISM band (2400–2480 MHz).
- Powered by ESP8285 MCU and SX1280/1281 RF chipset.
- Equipped with True Diversity dual-antenna design for superior link reliability.
- Integrated SE2431L PA/LNA module for strong transmission and clean reception.
- Compatible with all ExpressLRS transmitters and modules.
- Ultra-low latency and long-range performance using CRSF protocol link.
- Telemetry support (RSSI, link quality, battery voltage, GPS data, etc.).
- Compact PCB size with dual IPEX MHF-1 antenna connectors.
- Input voltage: 4 – 9 V DC (typical 5 V supply).
- Lightweight design — ideal for FPV drones and fixed-wing aircraft.
- Firmware target: Generic ESP8285 2.4GHz True Diversity RX.
2. Technical Specifications
Table 2-1. ELRS-R24-TD Receiver Specifications
| Parameter | Specification |
|---|---|
| Protocol | ExpressLRS (CRSF compatible) |
| Frequency Band | 2.4 GHz ISM (2400 – 2480 MHz) |
| Architecture | True Diversity – dual RF front-ends with dual antennas |
| MCU / RF Chipset | ESP8285 + SX1280 / SX1281 |
| PA / LNA Module | SE2431L PA + LNA for high sensitivity and power |
| RF Output Power | Up to +20 dBm (typ.) |
| Input Voltage (Vin) | 4 – 9 V DC (V pad) |
| Telemetry | Supported (RSSI, LQ, GPS, Voltage, etc.) |
| Antenna Connectors | 2 × IPEX MHF-1 (dual antennas) |
| Dimensions | ≈ 21 mm × 15 mm PCB (typ.) |
| Weight | ≈ 3 g (with antennas) |
| Firmware Target | Generic ESP8285 2.4 GHz True Diversity RX |
| Status | Active production / limited availability |
3. Applications
- FPV Drones: Dual-antenna diversity ensures stable control link in complex RF environments.
- Fixed-Wing Aircraft: Perfect for long-range and high-altitude missions requiring reliable telemetry.
- UAV Platforms: Provides dependable bidirectional data link for professional flight control systems.
- Research & Development: Suitable for testing signal diversity and advanced ExpressLRS features.
4. Installation & Usage Notes
- Provide a clean, regulated 5 V DC supply to the receiver (operating range 4–9 V).
- Connect both antennas securely to the IPEX MHF-1 connectors — ensure orthogonal placement for optimal diversity performance.
- Bind the receiver to your ExpressLRS transmitter module using the standard bind phrase or button.
- Mount the receiver away from power electronics and carbon fiber to avoid RF interference.
- Update firmware via ExpressLRS Configurator or Wi-Fi interface using the correct target.
5. Integration Recommendations
- Ideal for pilots who require redundancy and robust RF link quality.
- Use coaxial extensions for external antenna mounting if installed inside fuselage or composite shell.
- Ensure both antennas are mounted at least 90° apart to maximize diversity gain.
- Combine with ExpressLRS 2.4 GHz transmitters for low-latency long-range control.
- Perform range-check tests after installation to confirm both antenna paths are active.
6. Practical Summary
The Matek ELRS-R24-TD True Diversity Receiver is a premium dual-antenna 2.4 GHz solution engineered for superior reliability and low-latency control using the ExpressLRS protocol. With dual RF front-ends, PA/LNA amplification, and telemetry support, it provides exceptional signal integrity in challenging flight conditions. Compact, efficient, and field-proven, the R24-TD is the ideal choice for FPV pilots, UAV builders, and engineers demanding maximum link stability and range.
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