{"product_id":"radiomaster-xr3-nano-receiver","title":"RadioMaster XR3 Nano Multi-Frequency Diversity ExpressLRS Receiver for FPV\/RC, 2.4GHz \u0026 Sub-G 900MHz","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe RadioMaster XR3 Nano is a compact ExpressLRS receiver featuring multi-frequency operation (2.4GHz or Sub-G 900MHz) and antenna diversity for stable control links in RF-challenging areas. It is built around the 3rd generation Semtech LR1121 transceiver with an ESP32C3 MCU, and supports Wi-Fi configuration and firmware updates via WebUI.\u003c\/p\u003e\u003cp\u003eFor help choosing the correct antenna or region\/version for a build, contact \u003ca href=\"https:\/\/rcdrone.top\/\" rel=\"noopener\" target=\"_blank\"\u003ehttps:\/\/rcdrone.top\/\u003c\/a\u003e or email support@rcdrone.top.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMulti-frequency operation: 2.4GHz or Sub-G 900MHz\u003c\/li\u003e\n\u003cli\u003eAntenna diversity\u003c\/li\u003e\n\u003cli\u003eSemtech LR1121 transceiver (3rd generation)\u003c\/li\u003e\n\u003cli\u003eMCU: ESP32C3\u003c\/li\u003e\n\u003cli\u003eBuilt-in Wi-Fi for configuration and firmware updates (WebUI)\u003c\/li\u003e\n\u003cli\u003eSkyworks RFX2401C: LNA (boost sensitivity), PA (up to 100mW telemetry), and antenna switching for diversity\u003c\/li\u003e\n\u003cli\u003eAdditional UART for future expansion (pads labeled TX2 \/ RX2); primary pads labeled RX \/ TX \/ 5V\u003c\/li\u003e\n\u003cli\u003eSecondary port for advanced functionality\u003c\/li\u003e\n\u003cli\u003eCastled pads for easier soldering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem\u003c\/td\u003e\n\u003ctd\u003eXR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver (XR3 Nano ExpressLRS Receiver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType \/ Region (as listed)\u003c\/td\u003e\n\u003ctd\u003eISM2.4; CE868; FCC915\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMCU\u003c\/td\u003e\n\u003ctd\u003eESP32C3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Chip\u003c\/td\u003e\n\u003ctd\u003eLR1121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Connector\u003c\/td\u003e\n\u003ctd\u003eIPEX-1 x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna\u003c\/td\u003e\n\u003ctd\u003e2 x T-Antenna (either 2.4GHz, 900MHz, or Dual-band depending on selected package)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e2.4GHz \/ Sub-G 900MHz (also shown as: ISM 2.4GHz \/ FCC915 \/ EU868)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelemetry Power\u003c\/td\u003e\n\u003ctd\u003e100mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum packet rate \/ receive refresh rate\u003c\/td\u003e\n\u003ctd\u003e500Hz \/ K1000Hz (also listed as: DK500Hz \/ K1000Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum packet refresh rate \/ receiver refresh rate\u003c\/td\u003e\n\u003ctd\u003e25Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Voltage\u003c\/td\u003e\n\u003ctd\u003eDC 4.5 - 8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.3g (without antenna)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e22mm * 15mm * 4mm (board size also shown as 22.00MM x 15.00MM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware Version\u003c\/td\u003e\n\u003ctd\u003eExpressLRS v3.5.1 pre-installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFW Target\u003c\/td\u003e\n\u003ctd\u003eRadioMaster XR3 2.4\/900 Diversity RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface 1\u003c\/td\u003e\n\u003ctd\u003eCRSF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface 2\u003c\/td\u003e\n\u003ctd\u003eUART\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eAntenna Options (Tailored to Your Needs)\u003c\/h2\u003e\u003cp\u003eThe XR3 receiver is offered with different antenna selections: 2.4GHz, Sub-G 900MHz, or a Dual-Band antenna. The receiver includes only the selected antenna type (2.4GHz, 900MHz, or Dual-Band). The XR3 is capable of 2.4GHz or Sub-G 900MHz; using a Dual-Band antenna allows either frequency without needing to change antennas.\u003c\/p\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003ch3\u003eRadio compatibility (as listed)\u003c\/h3\u003e\u003cp\u003eCompatible with existing RadioMaster ExpressLRS radios and modules, including: TX16S MKII, BOXER, GX12, TX12 MKII, ZORRO, POCKET, MT12; and RadioMaster ExpressLRS modules: RANGER, BANDIT, NOMAD.\u003c\/p\u003e\u003ch3\u003eLR1121 Receiver Frequency Chart (as shown)\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReceiver\u003c\/th\u003e\n\u003cth\u003e2.4GHz\u003c\/th\u003e\n\u003cth\u003e900MHz\u003c\/th\u003e\n\u003cth\u003eGem-X 2.4GHz+900MHz Dual-Band\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eXR1\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eNO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXR2\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eNO\u003c\/td\u003e\n\u003ctd\u003eNO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXR3\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eNO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXR4\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003ctd\u003eYES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"4\"\u003eNotes (as shown): Requires 2.4GHz or Dual-Band Antenna; Requires 900MHz or Dual-Band Antenna; Requires Dual-Band Antennas\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eExpressLRS Dual-band Mode Compatibility Chart (as shown)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModulation Modes: FLRC, LoRa, FSK\u003c\/li\u003e\n\u003cli\u003eFrequency Band: 2.4G Band (2400 - 2480 GHz); Low Band (433, 866, 868, 915 MHz); GemX Dual Band (2.4G + Low)\u003c\/li\u003e\n\u003cli\u003eNote: D in the name indicates DVDA modes. Full in the name indicates full resolution modes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003cth\u003eChip Type\u003c\/th\u003e\n\u003cth\u003eListed packet rates \/ modes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRanger\u003c\/td\u003e\n\u003ctd\u003e2.4G (SX128x)\u003c\/td\u003e\n\u003ctd\u003eFLRC: F1000 Hz, F500 Hz, D500 Hz, D250 Hz; LoRa: 500 Hz, Full 333 Hz, 250 Hz, 150 Hz, Full 100 Hz, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNomad\u003c\/td\u003e\n\u003ctd\u003eDual (LR1121)\u003c\/td\u003e\n\u003ctd\u003eLoRa: 200 Hz, Full 100 Hz, 100 Hz, 50 Hz, 500 Hz, Full 333 Hz, 250 Hz, 150 Hz, Full 100 Hz, 50 Hz, X150 Hz, Full X100 Hz, 250 Hz, Full 200 Hz; FSK: DK 500 Hz, Full K1000 Hz; Available with ELRS v3.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandit\u003c\/td\u003e\n\u003ctd\u003eLow (SX127x)\u003c\/td\u003e\n\u003ctd\u003eLoRa: 200 Hz, Full 100 Hz, 100 Hz, 50 Hz, 25 Hz, D 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver\u003c\/li\u003e\n\u003cli\u003e2 x T Antenna (either 2.4GHz, 900MHz, or Dual-band depending on selected package)\u003c\/li\u003e\n\u003cli\u003e1 x CRSF wire\u003c\/li\u003e\n\u003cli\u003e3 x Heat-shrinkable tube\u003c\/li\u003e\n\u003cli\u003e1 x Manual card\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDownloads\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/XR3.pdf?v=1739432399\" rel=\"noopener\" target=\"_blank\"\u003eXR3 Receiver User Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.expresslrs.org\/\" rel=\"noopener\" target=\"_blank\"\u003eExpressLRS documentation\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAssociated Products (names only)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eXR1 Nano Multi-Frequency ExpressLRS Receiver\u003c\/li\u003e\n\u003cli\u003eXR2 Nano 2.4GHz ExpressLRS Receiver\u003c\/li\u003e\n\u003cli\u003eXR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\u003c\/li\u003e\n\u003cli\u003e2.4GHz \/ Sub-G 900MHz Dual-Band T Antenna\u003c\/li\u003e\n\u003cli\u003eUFL 2.4GHz T Antenna 65mm\/95mm for ELRS Receivers\u003c\/li\u003e\n\u003cli\u003eUFL 915\/868MHz T \u0026amp; Y Antenna for BR Series Receivers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"RadioMaster XR3 Nano multi-frequency diversity ExpressLRS receiver board for 2.4GHz and Sub-G 900MHz\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-XR3-Nano-Multi-Frequency-Diversity-ExpressLRS_24e6f8ce-2c36-46cf-aa6e-307fdec3f92c.webp?v=1781142952\"\u003e\u003cp\u003eA compact RadioMaster XR3 Nano ExpressLRS receiver combines multi-frequency support with true antenna diversity for dependable control links.\u003c\/p\u003e\n\u003cimg alt=\"RadioMaster XR3 Nano receiver close-up highlighting low-noise amplifier and power amplifier for sensitivity and telemetry\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS.jpg?v=1781142502\"\u003e\u003cp\u003eOnboard LNA\/PA design helps boost sensitivity while supporting higher-power telemetry for demanding flight environments.\u003c\/p\u003e\n\u003cimg alt=\"XR3 Nano receiver with antenna options: 2.4GHz T-antenna, 900MHz T-antenna, and dual-band antenna\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_d8cd7835-d568-4837-a3b5-a9c4274616b6.jpg?v=1781142508\"\u003e\u003cp\u003eChoose 2.4GHz, 900MHz, or a dual-band T-antenna package to match your build and region requirements.\u003c\/p\u003e\n\u003cimg alt=\"Semtech LR1121 3rd-gen transceiver graphic for XR3 multi-band ExpressLRS receiver (2.4GHz and Sub-G 900MHz)\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-XR3-Nano-Multi-Frequency-Diversity-ExpressLRS_18a206fa-fa9d-4ec1-afac-203eb0c026f3.webp?v=1781142964\"\u003e\u003cp\u003eBuilt on the Semtech LR1121 transceiver, the XR3 platform supports operation on 2.4GHz or Sub-G 900MHz bands.\u003c\/p\u003e\n\u003cimg alt=\"XR3 Nano receiver solder pad close-up with labeled RX, TX, 5V and extra TX2\/RX2 UART pads\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_fb7abac7-fc81-43d5-bfcb-b3e5cce50ff8.jpg?v=1781142561\"\u003e\u003cp\u003eExtra TX2\/RX2 pads provide an additional UART for future expansion while keeping primary RX\/TX\/5V pads easy to access.\u003c\/p\u003e\n\u003cimg alt=\"Compatibility list for RadioMaster ExpressLRS radios and modules (TX16S MKII, Boxer, Zorro, Ranger, Bandit, Nomad)\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_dc9e6d6a-1fc3-4067-9d97-28b7b9950ffc.jpg?v=1781142567\"\u003e\u003cimg alt=\"LR1121 receiver frequency chart comparing XR1, XR2, XR3, and XR4 for 2.4GHz, 900MHz, and dual-band support\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-XR3-Nano-Multi-Frequency-Diversity-ExpressLRS_314acee5-54d0-49f4-8b16-e6751e2abceb.webp?v=1781142975\"\u003e\u003cimg alt=\"ExpressLRS dual-band mode compatibility chart for Ranger, Nomad, and Bandit modules with supported packet rates\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_3f78fce9-4b70-40a9-876b-ab25eb65068f.jpg?v=1781142581\"\u003e\u003cimg alt=\"XR3 Nano ExpressLRS receiver specifications table with LR1121, ESP32C3, 1.3g weight, and 22×15×4mm size\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_a719b9d9-eb64-4acb-8193-5164fee0cf2f.jpg?v=1781142587\"\u003e\u003cimg alt=\"Digital scale showing XR3 Nano ExpressLRS receiver weight at about 1.3g\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_8bef0b48-5cdb-42da-b954-1b4c23bc09ca.jpg?v=1781142600\"\u003e\u003cp\u003eThe ultra-light receiver weight helps keep small FPV builds efficient without sacrificing link features.\u003c\/p\u003e\n\u003cimg alt=\"XR3 Nano receiver dimensions callout showing 22mm by 15mm board size\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_4db8f50e-31c3-446e-a11d-1fe9f7fb9c39.jpg?v=1781142605\"\u003e\u003cimg alt=\"Package contents: XR3 Nano ExpressLRS receiver, two T-antennas, CRSF wire, and heat-shrink tubes\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR3-Nano-Multi-Frequency-Antenna-Diversity-ExpressLRS_62754f44-f682-4f69-9b19-8671739eb658.jpg?v=1781142611\"\u003e\n\u003c\/div\u003e","brand":"RadioMaster","offers":[{"title":"2 x Dual-Band \/ FCC","offer_id":52974283751648,"sku":"HP0157.XR3-DB-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"2 x Dual-Band \/ LBT","offer_id":52974283784416,"sku":"HP0157.XR3-DB-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"2 x 2.4GHz \/ FCC","offer_id":52974283817184,"sku":"HP0157.XR3-DB-3","price":46.99,"currency_code":"USD","in_stock":true},{"title":"2 x 2.4GHz \/ LBT","offer_id":52974283849952,"sku":"HP0157.XR3-DB-4","price":46.99,"currency_code":"USD","in_stock":true},{"title":"2 x Sub-G 900MHz \/ FCC","offer_id":52974283882720,"sku":"HP0157.XR3-DB-5","price":46.99,"currency_code":"USD","in_stock":true},{"title":"2 x Sub-G 900MHz \/ LBT","offer_id":52974283915488,"sku":"HP0157.XR3-DB-6","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/2_9245a0cf-3da9-4cb0-9a6e-9f7d8fcd3781.jpg?v=1780613508","url":"https:\/\/rcdrone.top\/fr\/products\/radiomaster-xr3-nano-receiver","provider":"RCDrone","version":"1.0","type":"link"}