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The RadioMaster RP2 is an ultra-compact ExpressLRS 2.4 GHz nano receiver for high-performance FPV drones and RC aircraft. Its main claim is size: 13 x 11 x 7 mm and just 0.55 g with its on-board antenna, which makes it a fit for whoops, micro quads and ultralight builds.
It runs open-source ExpressLRS, which gives robust long-range control with low latency. The frequency range is 2.404 to 2.479 GHz, a maximum receive refresh rate of 500 Hz or F1000 Hz, a minimum refresh of 25 Hz and telemetry RF power of 10 mW.
The receiver has an integrated SMT ceramic antenna and can also take a 65 mm 2.4 GHz T-antenna. It works from 5 V, uses a CRSF bus and ships with ExpressLRS v2.4 preinstalled.
Firmware updates are easy, but plan on updating to a version that matches your transmitter module.
Micro drones where weight and size decide everything. On a larger quad you may prefer a receiver with a longer external antenna for better range.
The RP2 is small enough that placement is everything: keep the on-board antenna away from carbon fibre and motor wires, or use the optional 65 mm T-antenna if your frame shields the signal. Connect it to a flight controller UART with a CRSF connection, bind it to your ExpressLRS transmitter, and set the packet rate to suit your model. Solder joints on a receiver this small are delicate, so use fine wire, keep the leads short, and cover the board with a little heat shrink or conformal coating if it will be exposed to moisture.
0.55 g with the on-board antenna.
ExpressLRS v2.4.
500 Hz or F1000 Hz, with a minimum of 25 Hz.
CRSF.
An on-board SMT antenna, with an optional 65 mm T-antenna.
| Brand | Radiomaster |
|---|---|
| Firmware | ExpressLRS v2.4 pre-installed |
| Frequency | 2.404-2.479 GHz |
| MCU / Processor | EPS8285 |
| Weight | 0.550000 g |
| Selling unit | PCS |
