Designed specifically for use with our Nexus Control System and compatible with all CRSF/S.BUS enabled flight controllers the RP3-H ExpressLRS receiver comes with a built-in TCXO and an integrated housing design that makes the receiver tougher and ready to mount in modern helicopter frames. With the RP3-H receiver, you can get reliable, stable, and accurate signal reception, which enhances your flight experience and allows for superior performance even in demanding environments. The RP3-H also features an Ext-V telemetry input for compatibility with older ESCs that do not provide battery voltage telemetry via the control unit.

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.

RP3-H ExpressLRS 2.4GHz Nano Receiver

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 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.

RP3-H ExpressLRS 2.4GHz Nano Receiver

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

RP3-H ExpressLRS 2.4GHz Nano Receiver

RadioMaster RP Series Receivers

RP1 ELRS 2.4ghz Nano Receiver
RP2 ELRS 2.4ghz Nano Receiver
RP3 ELRS 2.4ghz Nano Receiver
RP4TD ELRS 2.4ghz Diversity Receiver
RP3-H ELRS 2.4ghz Nano Receiver

Download

RP3-H Receiver User Manual

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

RP3-H ExpressLRS 2.4GHz Nano Receiver

RP3-H Receiver is installed with ExpressLRS as standard.

ExpressLRS is an open-source, high-performance radio control link that delivers exceptional range and low-latency communication using advanced LoRa technology. It's highly customizable and perfect for RC enthusiasts looking for reliability and efficiency.

Pair your ExpressLRS with Radiomaster's top-tier transmitters and receivers. Radiomaster products are designed to maximize the benefits of ExpressLRS, offering state-of-the-art performance for your RC adventures. Upgrade your RC experience with the unbeatable combination of ExpressLRS and Radiomaster—engineered for excellence and tailored for you.

Find out more about ExpressLRS here

RP Series Receivers

RP4TD-M ExpressLRS 2.4GHz Mini True Diversity Receiver

RP3-H ExpressLRS 2.4GHz Nano Receiver

RP4TD ExpressLRS 2.4GHz True Diversity Receiver

RP3 V2 ExpressLRS 2.4ghz Nano Receiver

UFL 2.4Ghz T Antenna 65mm/95mm for ELRS Receivers

RP2 V2 ExpressLRS 2.4ghz Nano Receiver

RP1 V2 ExpressLRS 2.4ghz Nano Receiver