Image: Rotor Riot
Components · Radio Receivers
XR3 Nano Multi-Frequency Antenna Diversity Receiver for ELRS Protocol
MFR RadioMasterMODEL RR2237
XR3 Nano Multi-Frequency Antenna Diversity Receiver for ELRS Protocol — radio receivers by RadioMaster.
Vendor-supplied listing. This part is made by RadioMaster and listed from Rotor Riot. Full specifications and current availability are held by the manufacturer; this listing carries the part, its price and its category.
No second supplier matched for this listing — Rotor Riot is the only route we can offer today. 6 of our suppliers carry RadioMaster, though, so it may be listed elsewhere under a different product name: GetFPV, NewBeeDrone, Pyrodrone, RaceDayQuads, ReadyMadeRC.
Rotor Riot: usually ships same day. Its shipping policy says: “Orders for in-stock items, placed before 2 PM EST, Mondays through Fridays, are typically fulfilled the same day.” Policy, read 8 Oct 2026. That is the supplier’s dispatch time, not a delivery date; carrier transit is extra.
Specifications· 7 fields
As published by RadioMaster, the manufacturer. View the manufacturer's page
- RF chip
- LR1121
- Weight
- 1.3 g(vendor states 1.3g (without antenna))
- Processor
- ESP32C3
- Dimensions
- 22mm * 15mm * 4mm
- Frequency range
- 2.4GHz / Sub-G 900MHz
- Telemetry power
- 100mw
- Operating voltage
- DC 4.5 - 8.4V