RP3-H ExpressLRS 2.4GHz Nano Receiver
RP3-H ExpressLRS 2.4GHz Nano Receiver
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RP3-H ExpressLRS Receiver
Designed specifically for RC helicopters, the RP3-H ExpressLRS receiver features a built-in TCXO and integrated protective housing for improved durability and easy installation in modern helicopter frames. It provides stable, accurate, and reliable signal reception, delivering consistent performance even in demanding flying conditions.
The RP3-H also features an Ext-V telemetry input, providing compatibility with older ESCs that do not transmit battery voltage telemetry through the flight controller.
For enhanced telemetry performance, the RP3-H uses a Skyworks SKY66112 power amplifier capable of delivering up to 100mW of telemetry power, along with antenna switching for improved antenna diversity. Powered by an ESP8285 MCU and SX1281IMLTRT RF chip, it supports both LoRa and FLRC 2.4GHz links, offering long-range connectivity and low-latency performance.
With built-in Wi-Fi, firmware updates can be performed directly on the aircraft without removing the receiver, making setup and maintenance quick and convenient.
Features
- Perfect for helicopters and any application that needs a rugged cased serial receiver
- Plug'n'play solder free RP3-H ExpressLRS receivers compatible with NEXUS Heli flight controller
- Optimized PCB design for better heat dissipation
- LNA for better receiver range
- PA for better telemetry range
- Antenna Diversity for improved signal stability and range
- Built-in a TCXO (temperature compensated crystal oscillator)
- Automatically detects voltage telemetry of external battery voltage or receiver battery/ESC BEC voltage
- Compatible with all 2.4GHz ExpressLRS modules and transmitters with built in 2.4GHz ExpressLRS
Specifications
| Item | RP3-H ExpressLRS 2.4GHz Nano Receiver |
| Type | ISM |
| MCU | ESP8285 |
| RF Chip | SX1281 |
| Telemetry RF Power | Max 100mW |
| Antenna | 150mm 2.4GHz Antenna x 2 |
| Frequency Range | 2.404 – 2.479 GHz |
| Maximum Refresh Rate | 500Hz / F1000Hz |
| Minimum Refresh Rate | 25Hz |
| Working Voltage | DC 4.5 – 8.4V |
| Battery Voltage Detection Range | DC 4.0 – 35V |
| Weight | 5.1g (including two antennas) |
| Dimensions | 28 × 24 × 8mm |
| Firmware Version | ExpressLRS v3.3.1 (pre-installed) |
| FW Target | RadioMaster RP3-H Diversity 2400 RX |
| Bus Interface | CRSF / S.Bus |
TCXO (Temperature-Compensated Crystal Oscillator)
The built-in TCXO provides excellent frequency stability and accuracy by compensating for temperature fluctuations. This helps maintain consistent and reliable signal reception across a wide range of operating temperatures.
By minimizing frequency drift over time, the TCXO also helps maintain long-term frequency stability and reliable RF performance, reducing the risk of signal degradation.
Package Includes
- 1 * RP3-H ExpressLRS 2.4GHz Nano Receiver
- 2 * 150mm IPX1 2.4GHz T Antenna (installed)
- 1 * JST-GH CRSF 4 wire Pigtail
- 1 * JST-GH 4 wire to JST-GH CRSF cable
- 1 * JST-GH 4 wire to single Servo pin (single dupont connectors)
- 1 * Voltage telemetry wire
- 1 * Quick start guide
