RadioMaster RP3 V2 ExpressLRS 2.4GHz Nano Receiver

A compact ELRS receiver with diversity

The RadioMaster RP3 V2 is a nano ExpressLRS 2.4 GHz receiver made for FPV pilots who want range, low latency and steady signal. It uses an ESP8285 MCU, a Semtech SX1281 RF chip, a TCXO and a Skyworks SE2431L front-end module with a low-noise amplifier and a power amplifier.

It runs on 5 V, weighs 4.6 g and measures 22 x 13 x 4 mm. Two 65 mm 2.4 GHz T-antennas provide diversity, telemetry power tops out at 100 mW, and the bus interface is CRSF. The operating range is 2.404 to 2.479 GHz and a refresh rate of 500 Hz or 1000 Hz.

How to use it well

Bind it to any 2.4 GHz ExpressLRS transmitter module, place the two antennas at different angles for the best diversity, and keep them away from carbon and power wiring where you can. The PCB is designed to shed heat better than earlier boards, which helps when the receiver sits inside a warm canopy.

The receiver ships with a CRSF wire, a manual and the two antennas.

Best for

Drones and fixed-wing aircraft where you want a step up from a single-antenna nano receiver. For the simplest small builds, a lighter one-antenna receiver is enough.

Binding and updates

Bind it the same way as other ExpressLRS receivers, with a shared binding phrase or the power-cycle routine, and set the packet rate from the transmitter's ExpressLRS Lua script. The receiver can be updated over Wi-Fi if you need a newer firmware. Because it carries two antennas, point them in different directions and keep them away from carbon and power leads for the best result.

Questions buyers ask

Which link does it use?

ExpressLRS at 2.4 GHz with a CRSF bus.

What voltage does it run on?

5 V DC.

How big and heavy is it?

22 x 13 x 4 mm and 4.6 g.

Does it have diversity?

Yes, with two 65 mm T-antennas.