Radiomaster RP1 V2 ExpressLRS 2.4GHz Nano Receiver

A dependable everyday ELRS receiver

The RadioMaster RP1 V2 is an ExpressLRS 2.4 GHz nano receiver built for precision drone control. It is aimed at freestyle quads, FPV racers and fixed-wing aircraft, and the maker highlights low latency and rock-solid connectivity.

It uses a Semtech SX1281 RF chip with an ESP8285-class processor. It supports a maximum receive refresh rate of 500 Hz or F1000 Hz, has a built-in TCXO and comes with ExpressLRS v2.4 preinstalled.

Installation notes

The receiver runs on 5 V, measures 13 x 11 x 3 mm and weighs 2.2 g with its antenna. The interface is CRSF, and the board has a status LED on top and solder pads that are easier to work with than on the first RP1. A 65 mm UFL T-antenna is included, along with a CRSF wire and a manual.

Point the T-antenna away from carbon fibre and wiring, secure it so it does not flop around, and bind it with the same binding phrase as your transmitter module. Update the firmware to match your radio if you have changed ELRS versions.

Who it is for

Pilots who want a proven, well-supported ELRS receiver for a first or second build. It is a good default choice for 5 inch and larger quads.

First-flight checklist

Connect the receiver to a flight controller UART with the CRSF wire, remembering that transmit on one side goes to receive on the other. Power up, bind with your transmitter's binding phrase, and watch the LED to confirm a link. Set your failsafe in the flight controller, do a short range test with reduced transmitter power on the ground, and only then take off.

Questions buyers ask

What firmware is preinstalled?

ExpressLRS v2.4.

What is the refresh rate?

Up to 500 Hz or F1000 Hz.

Which antenna is included?

A 65 mm UFL 2.4 GHz T-antenna.

What is the bus interface?

CRSF.