RP4TD ExpressLRS 2.4GHz True Diversity Receiver
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RP4TD ExpressLRS Receiver
Featuring dual-channel 2.4GHz radios, the RP4TD delivers excellent signal sensitivity, signal-to-noise ratio, and overall RF performance. Its optimized circuit design helps maximize performance, while the reliable DC-DC power supply helps reduce operating temperatures during extended use.
The RP4TD is equipped with dual TCXOs (Temperature-Compensated Crystal Oscillators) for enhanced frequency stability and accuracy, helping maintain reliable signal performance across varying operating conditions.
With built-in Wi-Fi, firmware updates and receiver configuration are quick and convenient. Simply connect to the built-in WebUI using a PC or mobile device—no need to physically remove the receiver.
Compact and versatile, the RP4TD is well suited for a wide range of RC applications where a high-performance, space-efficient serial link is required.

Features
- Gemini mode compatible
- Reliable DCDC Power supply circuit
- Class leading SNR and RSSI performance
- Optimized PCB design for better heat dissipation
- Upgraded antenna with greater durability and performance
- UART pads for extended applications
- Dual TCXO (temperature compensated crystal oscillator)
- 2x 100mW RF Telemetry power output
- Compatible with all 2.4GHz ExpressLRS modules and transmitters with built in 2.4GHz ExpressLRS
Specifications
| Item | RP4TD ExpressLRS 2.4GHz Diversity Receiver |
| Type | ISM |
| MCU | ESP32 |
| RF Chip | SX1281 x 2 |
| Antenna | 65mm 2.4GHz T Antenna x 2 |
| Frequency Range | 2.4GHz |
| Maximum Refresh Rate | 500Hz / F1000Hz |
| Telemetry RF Power | Max 2 x 100mW |
| Working Voltage | DC 4.5 – 12.0V |
| Weight | 1.4g (without antenna) |
| Dimensions | 23.7 × 16.3 × 4.0mm |
| Firmware Version | ExpressLRS V3.3.0 (pre-installed) |
| FW Target | RadioMaster RP4TD 2400 RX |
| Bus Interface | CRSF |
| Extended Interface | UART |
Dual TCXO (Temperature-Compensated Crystal Oscillator)
The TCXO ensures high stability and accuracy in frequency control, compensating for temperature variations. This results in consistent and reliable signal reception, even in extreme temperature conditions. It also reduces frequency drift over time, providing long-term frequency stability and preventing signal degradation. In our testing, we found that two TCXOs offer better advantages in true diversity receivers.




Package Includes
- 1 * RP4TD ExpressLRS 2.4GHz Diversity Receiver
- 1 * CRSF wire
- 3 * Heat-Shrinkable Tube
- 2 * 65mm 2.4GHz T Antenna (Installed on receiver)
- 1 * User Manual