{"product_id":"radiomaster-xr1-nano-receiver","title":"RadioMaster XR1 Nano Multi-Frequency ExpressLRS Receiver 2.4GHz\/Sub-G 900MHz LR1121 for RC builds","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe XR1 Nano Multi-Frequency \u003cstrong\u003eExpressLRS receiver\u003c\/strong\u003e is an ultra-compact 20mm × 13mm module designed for a wide range of RC builds. It uses a 3rd generation \u003cstrong\u003eSemtech LR1121\u003c\/strong\u003e transceiver to operate on either the \u003cstrong\u003e2.4GHz\u003c\/strong\u003e or \u003cstrong\u003eSub-G 900MHz\u003c\/strong\u003e bands, and features built-in \u003cstrong\u003eWi-Fi\u003c\/strong\u003e for configuration and firmware updates via a WebUI on PC or mobile devices.\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\u003eTelemetry power: 100mW\u003c\/li\u003e\n\u003cli\u003eMCU: ESP32C3\u003c\/li\u003e\n\u003cli\u003eRF chip: Semtech LR1121 (3rd generation)\u003c\/li\u003e\n\u003cli\u003eSecondary UART port (additional UART for future expansion; TX2\/RX2 pads)\u003c\/li\u003e\n\u003cli\u003eCastellated pads for easier soldering\u003c\/li\u003e\n\u003cli\u003eBuilt-in Wi-Fi for configuration and firmware updates (WebUI)\u003c\/li\u003e\n\u003cli\u003eCompatibility note (as labeled): compatible with existing RadioMaster ExpressLRS radios and modules\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\u003eXR1 Nano Multi-Frequency ExpressLRS Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eISM_2.4 or FCC_915 (CE868 is also listed in provided product text)\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\u003eSemtech LR1121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF connector\u003c\/td\u003e\n\u003ctd\u003eIPEX-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna\u003c\/td\u003e\n\u003ctd\u003e1x 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 or Sub-G 900MHz\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\u003c\/td\u003e\n\u003ctd\u003eDK500Hz \/ K1000Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum packet refresh rate\u003c\/td\u003e\n\u003ctd\u003e50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking voltage\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.0g (without antenna)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20mm * 13mm * 3mm (also shown as 20.00MM × 13.00MM)\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 XR1 2.4\/900 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\u003eTailored to Your Needs\u003c\/h2\u003e\u003cp\u003eThe XR1 Receiver is available with different antenna selections: \u003cstrong\u003e2.4GHz\u003c\/strong\u003e, \u003cstrong\u003eSub-G 900MHz\u003c\/strong\u003e, or a \u003cstrong\u003eDual-Band\u003c\/strong\u003e antenna option. The receiver includes only the selected antenna type. A Dual-Band antenna allows switching between 2.4GHz and Sub-G 900MHz without changing antennas.\u003c\/p\u003e\u003cp\u003eLR1121 Receiver Frequency Chart (as labeled): XR1 supports 2.4GHz (YES), 900MHz (YES), Gem-X 2.4GHz+900MHz Dual-Band (NO). It requires a 2.4GHz or Dual-Band antenna for 2.4GHz operation, and a 900MHz or Dual-Band antenna for 900MHz operation.\u003c\/p\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 * XR1 Nano Multi-Frequency ExpressLRS Receiver\u003c\/li\u003e\n\u003cli\u003e1 * T Antenna (either 2.4GHz, 900Mhz, or Dual-band depending on selected package)\u003c\/li\u003e\n\u003cli\u003e1 * CRSF wire\u003c\/li\u003e\n\u003cli\u003e3 * Heat-shrinkable tube\u003c\/li\u003e\n\u003cli\u003e1 * Manual card\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExpressLRS RC control link for FPV drones, multirotors, RC planes, and other compact RC builds\u003c\/li\u003e\n\u003cli\u003eCRSF receiver integration with flight controllers\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor order assistance or setup questions, contact \u003ca href=\"https:\/\/rcdrone.top\/\" rel=\"noopener\" target=\"_blank\"\u003ehttps:\/\/rcdrone.top\/\u003c\/a\u003e or email \u003ca href=\"mailto:support@rcdrone.top\"\u003esupport@rcdrone.top\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eFor ExpressLRS documentation and general support information, visit \u003ca href=\"https:\/\/www.expresslrs.org\/\" rel=\"noopener\" target=\"_blank\"\u003ehttps:\/\/www.expresslrs.org\/\u003c\/a\u003e.\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"RadioMaster XR1 Nano multi-frequency ExpressLRS receiver with LR1121, 2.4GHz\/Sub-G 900MHz support\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver.jpg?v=1781143203\"\u003e\u003cp\u003eThe XR1 Nano packs ExpressLRS performance into a compact receiver that can run on either 2.4GHz or Sub-G 900MHz.\u003c\/p\u003e\n\u003cimg alt=\"XR1 Nano receiver with 2.4GHz, 900MHz and dual-band T-antenna options for RC builds\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_f8e3205b-8b6c-4b6d-a04b-429528132405.jpg?v=1781143209\"\u003e\u003cp\u003eChoose a 2.4GHz, 900MHz, or dual-band T-antenna to match your preferred band and build style.\u003c\/p\u003e\n\u003cimg alt=\"Semtech LR1121 3rd-generation transceiver graphic for XR1 multi-frequency ExpressLRS receiver\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_97e300d4-09aa-4967-9205-9f49b044c9da.jpg?v=1781143214\"\u003e\u003cp\u003eA 3rd-generation Semtech LR1121 transceiver enables flexible operation across 2.4GHz and Sub-G 900MHz bands.\u003c\/p\u003e\n\u003cimg alt=\"Close-up of XR1 receiver solder pads highlighting secondary UART TX2\/RX2 for future expansion\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_2ae63444-25e7-4c38-9864-1f4302d7d8b4.jpg?v=1781143220\"\u003e\u003cp\u003eExtra TX2\/RX2 pads provide a secondary UART for future expansion or custom wiring needs.\u003c\/p\u003e\n\u003cimg alt=\"Ultra-compact XR1 Nano receiver next to earbuds highlighting small size and 1.0g lightweight design\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_e448f9ad-ec1f-4c1e-9d85-546b77c213c8.jpg?v=1781143226\"\u003e\u003cp\u003eBuilt for tight spaces, the board measures 20×13mm and weighs about 1.0g without the antenna.\u003c\/p\u003e\n\u003cimg alt=\"Compatibility graphic: XR1 ExpressLRS receiver works with existing RadioMaster ExpressLRS radios and modules\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_07b6a0fe-8efb-45e3-9ea2-5adddcbce515.jpg?v=1781143232\"\u003e\u003cp\u003eDesigned to pair with existing RadioMaster ExpressLRS radios and modules for a straightforward setup.\u003c\/p\u003e\n\u003cimg alt=\"LR1121 receiver frequency chart for XR1\/XR2\/XR3\/XR4 with 2.4GHz, 900MHz and dual-band support table\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_73dfe546-34e7-4100-8deb-3da5ca867343.webp?v=1781143559\"\u003e\u003cimg alt=\"ExpressLRS dual-band mode compatibility chart comparing Ranger, Nomad and Bandit modulation modes and rates\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_fe80671a-a483-4eb1-a9ad-f49e72a754a7.jpg?v=1781143247\"\u003e\u003cimg alt=\"XR1 Nano ExpressLRS receiver specifications table: ESP32C3, LR1121, IPEX-1, 5V, 100mW telemetry\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_ed767198-075f-448c-a73b-61a8345760fb.jpg?v=1781143253\"\u003e\u003cimg alt=\"XR1 Nano ExpressLRS receiver on digital scale indicating approximately 1.0g weight (without antenna)\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_c2f330ac-5da9-4f49-9e6f-4fd43cd24e06.jpg?v=1781143259\"\u003e\u003cimg alt=\"XR1 Nano receiver dimension view with 20.00mm by 13.00mm footprint and IPEX antenna connector\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_822add25-b405-4683-b52f-538c855cf7f4.jpg?v=1781143264\"\u003e\u003cimg alt=\"Package contents: XR1 Nano receiver, selected T-antenna, CRSF wire, three heat-shrink tubes, manual card\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/XR1-Nano-Multi-Frequency-ExpressLRS-Receiver_a601cb93-fa30-41f5-b942-ed8b2efe45f5.jpg?v=1781143270\"\u003e\u003cp\u003eEverything needed for basic installation is included: receiver, selected antenna, CRSF lead, and heat-shrink tubing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RadioMaster","offers":[{"title":"Dual-Band \/ FCC","offer_id":52974239351008,"sku":"HP0157.XR1-DB-1","price":21.79,"currency_code":"USD","in_stock":true},{"title":"Dual-Band \/ LBT","offer_id":52974239383776,"sku":"HP0157.XR1-DB-2","price":21.79,"currency_code":"USD","in_stock":true},{"title":"2.4GHz \/ FCC","offer_id":52974239416544,"sku":"HP0157.XR1-DB-3","price":21.79,"currency_code":"USD","in_stock":true},{"title":"2.4GHz \/ LBT","offer_id":52974239449312,"sku":"HP0157.XR1-DB-4","price":21.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/RP1-2.4_900.png?v=1780613313","url":"https:\/\/rcdrone.top\/products\/radiomaster-xr1-nano-receiver","provider":"RCDrone","version":"1.0","type":"link"}