{"product_id":"src-207-brotherhobby-c3-900-2400-dual-band-100mw-nano-rx","title":"BrotherHobby C3 ExpressLRS Receiver 915MHz\/2.4GHz Dual Band 100mW Nano RX, ESP32-C3 LR1121 TCXO","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX is an ExpressLRS Receiver designed for 915MHz \/ 2.4GHz operation in a compact 13mm*20mm, 1g (receiver only) format. The receiver uses an ESP32-C3+LR1121+TCXO chipset and provides IPEX1 antenna connection and 5V input power.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDual-band ExpressLRS receiver: 2.4GHz \/ 915MHz\u003c\/li\u003e\n\u003cli\u003eTX Power: 100mW\u003c\/li\u003e\n\u003cli\u003eChipset: ESP32-C3+LR1121+TCXO (LR1121 RF chip design; ESP32-C3 main control)\u003c\/li\u003e\n\u003cli\u003eBuilt-in temperature compensated crystal oscillator (TCXO)\u003c\/li\u003e\n\u003cli\u003eIPEX1 antenna connector; supports a 915M+2.4G dual band antenna\u003c\/li\u003e\n\u003cli\u003ePad labels: GND, 5V, TX, RX\u003c\/li\u003e\n\u003cli\u003eRGB indicator light\u003c\/li\u003e\n\u003cli\u003eBoard marking: “915MHz\/2.4GHz Dual Band Nano RX V1.0”\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eName\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExpressLRS Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRF Freq\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.4GHz \/ 915MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTX Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIPEX1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1g(receiver only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13mm*20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESP32-C3+LR1121+TCXO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eExpressLRS Dual-band Mode Compatibility (Chart)\u003c\/h2\u003e\u003ch3\u003eModulation modes shown\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFLRC\u003c\/li\u003e\n\u003cli\u003eLoRa\u003c\/li\u003e\n\u003cli\u003eFSK\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequency band notes shown\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2.4G frequency band: 2400 - 2480 MHz\u003c\/li\u003e\n\u003cli\u003eLow band: 433, 866, 868, 915 MHz\u003c\/li\u003e\n\u003cli\u003eGemX dual-band: 2.4G + low frequency band\u003c\/li\u003e\n\u003cli\u003eRemark: “Din” in the name indicates CVCA mode\u003c\/li\u003e\n\u003cli\u003eRemark: The ones with “Full” in the name indicate full resolution mode\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRanger (2.4G frequency band, SX128x) rates shown\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFLRC: F1000 Hz, F500 Hz, D500 Hz, D250 Hz\u003c\/li\u003e\n\u003cli\u003eLoRa: 500 Hz, Full 333 Hz, 250 Hz, 150 Hz, Full 100 Hz, 50Hz\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNomad (Dual Band, LR1121) rates shown\u003c\/h3\u003e\u003cul\u003e\n\u003cli\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\u003c\/li\u003e\n\u003cli\u003eFSK: DK 500 Hz, Full K1000 Hz\u003c\/li\u003e\n\u003cli\u003eNote shown: Available with ELRS v3.4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBandit (Low Band, SX127x) rates shown\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eLoRa: 200 Hz, Full 100 Hz, 100 Hz, 50 Hz, 25 Hz, D50 Hz\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eWiring \u0026amp; Betaflight Setup (Example)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConnect receiver pads to the flight controller: GND to GND, 5V to 5V, TX to FC RX, RX to FC TX.\u003c\/li\u003e\n\u003cli\u003eIn Betaflight Configurator “Ports”: enable the corresponding UART (example shown: UART2) as Serial Rx (Configuration\/MSP shown at 115200).\u003c\/li\u003e\n\u003cli\u003eIn “Configuration”: set Receiver Mode to “Serial Digital Receiver”, and set Serial Receiver Provider (Serial ReceiverProvider) to “CRSF”.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBinding\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe receiver enters the frequency matching state by being powered on three times in a row.\u003c\/li\u003e\n\u003cli\u003eNote: Once the receiver is bound, it will remember the information and will automatically connect successfully after restarting without the need to re-bind.\u003c\/li\u003e\n\u003c\/ul\u003e\u003col\u003e\n\u003cli\u003eTurn off the remote control.\u003c\/li\u003e\n\u003cli\u003eRepeatedly power on the receiver three times; the receiver light flashes twice, indicating frequency matching mode.\u003c\/li\u003e\n\u003cli\u003eTurn on the remote control, enter the LUA operation interface of ExpressLRS, and select the [BIND] button to confirm.\u003c\/li\u003e\n\u003cli\u003eThe receiver indicator light stays constantly on, indicating successful frequency matching.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch2\u003eLED Indicator Meanings\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRainbow color gradient\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower on self test\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGreen and orange lights flash alternately\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnter WiFi upgrade mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRed light flashing fast\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo RF chip detected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrange dual flash\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCrossover Mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrange triple flash\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnected, but does not match the settings in model match\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrange slow flash\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaiting for connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlways on\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003cli\u003e4*30awg connection line*1\u003c\/li\u003e\n\u003cli\u003eT-Shape Dual Band Antenna*1\u003c\/li\u003e\n\u003cli\u003eTransparent Heat Shrinkable Tubing*2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor compatibility questions or setup support, contact support@rcdrone.top or visit https:\/\/rcdrone.top\/.\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX.jpg?v=1776874158\"\u003e\u003cp\u003eBrotherHobby C3 dual-band nano receiver uses solder pads labeled RX, TX, 5V, and GND for straightforward wiring.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_f4482ba9-e06d-44bc-88b5-22b2d1ae4923.jpg?v=1776874170\"\u003e\u003cp\u003eBrotherHobby C3 ExpressLRS Receiver uses a Semtech LR1121 RF chip and supports sub-GHz and 2.4GHz LoRa with up to 100mW telemetry power.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_7cce4f55-3c56-4dcf-ad8e-f2257981470f.jpg?v=1776874181\"\u003e\u003cp\u003eThe ExpressLRS dual-band mode compatibility chart lists supported packet rates across Ranger, Nomad, and Bandit module options.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_bd0b1dd0-7153-4eff-ba2c-edd27456fe70.jpg?v=1776874194\"\u003e\u003cp\u003eBrotherHobby C3 ExpressLRS Nano RX uses an ESP32-C3 main control chip and provides clearly labeled GND, 5V, TX, and RX pads for wiring.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_7b424841-9021-4e69-969f-4b53f31b5e5e.jpg?v=1776874206\"\u003e\u003cp\u003eA built-in temperature compensated crystal oscillator (TCXO) helps maintain stable frequency performance across hot and cold conditions.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_ba0f65a2-8703-4923-9984-d842fd892353.jpg?v=1776874216\"\u003e\u003cp\u003eThe 915MHz\/2.4GHz dual-band antenna design supports switching bands without swapping antennas.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_1686ea29-1e1b-4188-be5e-a8a93e74d4e5.jpg?v=1776874227\"\u003e\u003cp\u003eBrotherHobby C3 ExpressLRS receiver uses an ESP32-C3 with LR1121+TCXO, supports 915MHz\/2.4GHz, and provides 5V power and IPEX1 antenna connection.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_3384373c-60a1-4dc1-86fd-0cd1d3c39519.jpg?v=1776874238\"\u003e\u003cp\u003eBrotherHobby C3 ExpressLRS receiver setup uses GND and 5V power plus FC TX\/RX wiring, with UART Serial RX enabled and CRSF selected in Betaflight.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_83df8c48-fbc7-4a44-92d6-541625b9d9ef.jpg?v=1776874250\"\u003e\u003cp\u003e\u003ca href=\"https:\/\/rcdrone.top\/collections\/brotherhobby\" title=\"BrotherHobby\"\u003eBrotherHobby\u003c\/a\u003e C3 ExpressLRS receiver binding uses a three-power-cycle method, with LED patterns indicating bind and connection status.\u003c\/p\u003e\n\u003cimg alt=\"BrotherHobby C3 900\/2400 Dual Band 100mW Nano RX\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/BrotherHobby-C3-9002400-Dual-Band-100mW-Nano-RX_0d094e7a-2d96-46d3-bb5e-8347906ac86c.jpg?v=1776874262\"\u003e\u003cp\u003eBrotherHobby C3 dual-band nano receiver includes the RX board, T-shape dual-band antenna, 30AWG connection cable, user manual, and heat-shrink tubing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BrotherHobby","offers":[{"title":"Default Title","offer_id":51965232644320,"sku":"bro-C3-100mw-rx","price":39.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/300ed97721.jpg?v=1776845126","url":"https:\/\/rcdrone.top\/products\/src-207-brotherhobby-c3-900-2400-dual-band-100mw-nano-rx","provider":"RCDrone","version":"1.0","type":"link"}