The RP3-H receiver uses the Skyworks SKY66112 power amplifier to increase telemetry performance, the PA provides up to 100mw of telemetry power, and antenna switching for antenna diversity. It is developed around the ESP8285 MCU and SX1281IMLTRT RF Chip, offering Lora and FLRC 2.4GHz RF links that provide incredible range and low latency. With Wifi built-in, firmware updates can be done on your craft without the need to remove the receiver.
- 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 x2
- Frequency Range: 2.404 - 2.479 GHz
- Maximum receive refresh rate: 500Hz / F1000Hz
- Minimum receiver refresh rate: 25Hz
- Working voltage: DC 4.5 - 8.4V
- Battery voltage detection range: DC 4.0 - 35V
- Weight: 5.1g (Including two antenna)
- Dimension: 28mm*24mm*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 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. Click here to learn more about the TCXO.







A special thanks to the Rotorflight development team who without their hardwork and dedication this project would not have been possible. Learn more about Rotorflight HERE.
Dimensions

RadioMaster RP Series Receivers
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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
