{"product_id":"src-140604-geprc-elrs-915m-2-4g-c3-gemini-xrossband-receiver","title":"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, ExpressLRS Dual-Band LR1121x2 ESP32-C3","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver is an ExpressLRS-based dual-band receiver system built around Semtech LR1121 (3rd generation RF) and an ESP32-C3 chip, supporting 150-960MHz (sub-GHz) and 2.4GHz for advanced dual-band communication. It supports up to 1000Hz (FSK) refresh rate and allows operation in 915M Gemini, 2.4G Gemini, and 915M+2.4G dual-band modes (915M+2.4G dual-band mode requires a GeminiX TX \/ GemX TX). In dual-band mode, it can communicate separately on 915MHz and 2.4GHz for improved anti-interference.\u003c\/p\u003e\u003cp\u003eWith a built-in TCXO for stable operation in extreme temperatures, up to 100mW telemetry (TLM) power, a built-in WiFi antenna for firmware upgrades via Wi-Fi, and an SH1.0 connector, it is designed for compact and efficient installation. The receiver can also be used as a TX with 100mW output by selecting the RX_AS_TX option during firmware setup and using a custom JR bay modification kit (ESP32-C3 receiver must select version 3.6 to be used as TX).\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAdvanced ExpressLRS 915M\/2.4G dual-frequency system\u003c\/li\u003e\n\u003cli\u003eBased on Semtech LR1121 RF chip; supports 150-960MHz (sub-GHz) and 2.4GHz\u003c\/li\u003e\n\u003cli\u003eDual LR1121 chips; ESP32-C3 chip\u003c\/li\u003e\n\u003cli\u003eOperating modes: 915M Gemini, 2.4G Gemini, 915M+2.4G dual-band\u003c\/li\u003e\n\u003cli\u003eIntegrated TCXO for stable frequency performance across temperature changes\u003c\/li\u003e\n\u003cli\u003eTelemetry power up to 100mW\u003c\/li\u003e\n\u003cli\u003eRefresh rate: 25Hz-1000Hz (LoRa, FSK)\u003c\/li\u003e\n\u003cli\u003eFirmware upgrade via Wi-Fi (built-in WiFi antenna)\u003c\/li\u003e\n\u003cli\u003eRGB light indicates status\u003c\/li\u003e\n\u003cli\u003eOmni-directional signal reception\u003c\/li\u003e\n\u003cli\u003eCustom 915M+2.4G dual-band T-antenna for reception at both frequencies (no antenna swap needed when switching bands)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor setup help, wiring questions, or firmware guidance, contact support@rcdrone.top or visit https:\/\/rcdrone.top\/.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e18 x 23.6 x 5.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.6g (only receiver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChips\u003c\/td\u003e\n\u003ctd\u003eESP32-C3, LR1121x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Oscillator\u003c\/td\u003e\n\u003ctd\u003eTCXO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Bands\u003c\/td\u003e\n\u003ctd\u003e915MHz Gemini, 2.4GHz Gemini, 915M+2.4G Dual-Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefresh Rate\u003c\/td\u003e\n\u003ctd\u003e25Hz-1000Hz (LoRa, FSK)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Output Protocol\u003c\/td\u003e\n\u003ctd\u003eCRSF, SBUS, SUMD, DJI RS2 Pro, MAVLink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna Connector\u003c\/td\u003e\n\u003ctd\u003eipex1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTLM Power\u003c\/td\u003e\n\u003ctd\u003e100mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware\u003c\/td\u003e\n\u003ctd\u003eGEPRC C3 900\/2400 Gemini Xrossband RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWiring \u0026amp; Installation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRX wiring (SH1.0): GND, 5V, TX, RX. Connect RX TX to FC RX, and RX RX to FC TX.\u003c\/li\u003e\n\u003cli\u003eBetaflight standard wiring sequence differs from the ELRS standard. Always check the connection order between FC and RX before plugging in the connector to avoid RX damage caused by reversed polarity.\u003c\/li\u003e\n\u003cli\u003eSingle-frequency antenna installation:\n\u003cul\u003e\n\u003cli\u003e915M mode: install two 915M antennas\u003c\/li\u003e\n\u003cli\u003e2.4G mode: install two 2.4G antennas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eDual-band mode: install the 915M antenna on ANT1 and the 2.4G antenna on ANT2.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver\u003c\/li\u003e\n\u003cli\u003e2 x 915M\/2.4G Dual-band T-Antennas (ipex1 80mm)\u003c\/li\u003e\n\u003cli\u003e1 x Receiver silicone cable (SH1.0 4pin 100mm)\u003c\/li\u003e\n\u003cli\u003e1 x Heat shrink tube\u003c\/li\u003e\n\u003cli\u003e1 x User manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFPV drones requiring ExpressLRS 915MHz \/ 2.4GHz control link options\u003c\/li\u003e\n\u003cli\u003eClose-range racing and long-range flights requiring enhanced anti-interference performance (dual-band mode requires GemX TX \/ GeminiX TX)\u003c\/li\u003e\n\u003cli\u003eProjects needing bidirectional MAVLink (v2) for 2-in-1 remote control and data transmission\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetails\u003c\/h2\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband receiver boards with dual antennas and LR1121\/ESP32 labels\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_8723d98d-16b9-4a93-aa1f-6cb50ddee282.webp?v=1774347496\"\u003e\u003cp\u003eThe GEPRC ELRS C3 Gemini Xrossband receiver pairs 915M and 2.4G dual-band support with dual antennas and an integrated TCXO.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, Graphic of Semtech LR1121 RF chips on a receiver PCB, noting 150–960MHz (sub-GHz) and 2.4GHz support\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_9091d2fa-3bca-4a07-aba6-a7285c55a3c7.webp?v=1774347513\"\u003e\u003cp\u003eThe receiver uses a Semtech LR1121 RF chip solution that supports 150–960MHz (sub-GHz) and 2.4GHz dual-band communication.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, Diagram of 915MHz and 2.4GHz dual-band communication modes for a GEPRC ELRS C3 Gemini Xrossband receiver\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_30511ad9-e08b-4d6d-b993-5bff245ca800.webp?v=1774347529\"\u003e\u003cp\u003eThe C3 Gemini Xrossband receiver supports 915MHz Gemini, 2.4GHz Gemini, and dual-band communication modes for flexible ELRS setups.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS C3 Gemini receiver with 915MHz + 2.4GHz dual-band T antennas and ANT1\/ANT2 board\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_ec8d0894-e4b0-4475-8a18-2f112f475806.webp?v=1774347546\"\u003e\u003cp\u003eThe 915MHz + 2.4GHz dual-band T-antenna setup pairs with the C3 Gemini receiver board labeled ANT1 and ANT2 for streamlined installation.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS 915M\/2.4G C3 Gemini receiver antenna wiring guide for 915MHz, 2.4GHz, and dual-band modes\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_39c1ade6-cb60-4a59-a5c3-eb9093aa40e8.webp?v=1774347562\"\u003e\u003cp\u003eSingle-band setups use two matching antennas for 915M or 2.4G mode, while dual-band uses 915M on ANT1 and 2.4G on ANT2.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, Graphic highlighting built-in TCXO feature for the GEPRC ELRS 915M\/2.4G C3 receiver\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_b082d077-3022-4418-8328-964d010613ba.webp?v=1774347578\"\u003e\u003cp\u003eThe built-in TCXO helps keep frequency stability for the receiver across changing temperatures.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, Diagram of bidirectional MAVLink v2 communication linking radio controller, drone, GCS laptop, and AAT tracker\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_9038329a-f2f0-4446-91e6-9293846b4773.webp?v=1774347596\"\u003e\u003cp\u003eBidirectional MAVLink (v2) support enables two-way remote control and data transmission between the radio controller, drone, GCS, and AAT.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS C3 Gemini crossband receiver module with dual antennas and RX_AS_TX 100mW option noted\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_2882c92c-a5c5-4ac7-ab6b-54b05e487a8f.webp?v=1774347617\"\u003e\u003cp\u003eThe C3 Gemini receiver supports an RX_AS_TX firmware option for 100mW output when used with a custom JR bay modification kit.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS C3 Gemini Xrossband receiver details showing RGB status LED, Wi‑Fi update, ESP32‑C3 chip, SH1.0 connector\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_af842404-4a4d-40f5-92cc-6938002b5308.webp?v=1774347639\"\u003e\u003cp\u003eThe GEPRC C3 Gemini Xrossband receiver includes an RGB status LED, Wi‑Fi firmware upgrade support, and an SH1.0 connector for straightforward wiring.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, Wiring diagram for GEPRC ELRS C3 Gemini receiver to FC: GND, 5V, TX and RX pin connections\" src=\"https:\/\/geprc.com\/wp-content\/uploads\/2025\/11\/10-2.jpg\"\u003e\u003cp\u003eThe receiver connects to the flight controller with four wires—GND, 5V, TX, and RX—and the Betaflight connector pin order should be verified before plugging in.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, Receiver operating frequency band table showing GEPRC ELRS 915MHz\/2.4GHz receivers and Gemini Xrossband support\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_c09cf0aa-6777-464a-bcc5-998f707c7d79.webp?v=1774347703\"\u003e\u003cp\u003eThe frequency compatibility chart shows the 915M\/2.4G C3 GemX RX supports 915MHz, 2.4GHz, and Gemini Xrossband operation.\u003c\/p\u003e\u003cimg alt=\"Specifications table for GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband receiver, 18×23.6×5.7mm, 1.6g\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_84a607d1-6fbd-45e2-b9a4-45a08319ad26.webp?v=1774347722\"\u003e\u003cp\u003eThe GEPRC ELRS C3 Gemini Xrossband receiver measures 18×23.6×5.7mm, weighs 1.6g, runs on 5V, and uses an IPEX1 antenna connector.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC C3 GemX ELRS 915M\/2.4G receiver board with dual ANT1\/ANT2 antenna connectors and G\/5V\/T\/R pads\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_06a3eaa8-c37d-42d3-b356-3aa28f004aa1.webp?v=1774347744\"\u003e\u003cp\u003eDual ANT1\/ANT2 antenna connectors and clearly labeled G\/5V\/T\/R pads make wiring the C3 GemX ELRS receiver straightforward in a build.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS C3 GemX 915M\/2.4G receiver board with ANT1\/ANT2 connectors, plug header, and G 5V T R pads\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_becf272d-4a64-4410-b29b-482dccb10ecc.webp?v=1774347767\"\u003e\u003cp\u003eThe \u003ca href=\"https:\/\/rcdrone.top\/collections\/geprc\" title=\"GEPRC\"\u003eGEPRC\u003c\/a\u003e ELRS C3 GemX receiver uses dual ANT1\/ANT2 antenna connectors plus clearly labeled G\/5V\/T\/R pads for straightforward wiring.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS C3 Gemini Xrossband receiver board with ANT1\/ANT2 leads and two cross-style antennas (915M\/2.4G)\" src=\"https:\/\/geprc.com\/wp-content\/uploads\/2025\/11\/15-2.jpg\"\u003e\u003cp\u003eThe GEPRC C3 Gemini Xrossband receiver includes two ANT1\/ANT2 coax leads with cross-style antennas for flexible mounting on your build.\u003c\/p\u003e\u003cimg alt=\"GEPRC ELRS 915M\/2.4G C3 Gemini Xrossband Receiver, GEPRC ELRS C3 Gemini Xrossband receiver kit with two dual-band T-antennas, 4-pin cable, and heat shrink\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver_0114e54d-b434-4d01-8cb6-fd9443d1a245.webp?v=1774347833\"\u003e\u003cp\u003eThe GEPRC ELRS C3 Gemini Xrossband receiver kit includes two 915M\/2.4G dual-band T-antennas, a 4-pin SH1.0 silicone cable, and a heat-shrink tube for a tidy install.\u003c\/p\u003e","brand":"GEPRC","offers":[{"title":"Default Title","offer_id":51113204449504,"sku":"GP108091","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/GEPRC-ELRS-915M24G-C3-Gemini-Xrossband-Receiver.jpg?v=1774347358","url":"https:\/\/rcdrone.top\/products\/src-140604-geprc-elrs-915m-2-4g-c3-gemini-xrossband-receiver","provider":"RCDrone","version":"1.0","type":"link"}