{"id":8949,"date":"2025-04-09T21:16:35","date_gmt":"2025-04-09T21:16:35","guid":{"rendered":"https:\/\/1dronas.lt\/?post_type=product&p=8949"},"modified":"2026-04-10T08:19:10","modified_gmt":"2026-04-10T05:19:10","slug":"radiomaster-xr4-gemini-xrossband-dual-band-expresslrs-receiver","status":"publish","type":"product","link":"https:\/\/1dronas.lt\/en\/produktas\/radiomaster-xr4-gemini-xrossband-dual-band-expresslrs-receiver\/","title":{"rendered":"RadioMaster XR4 Gemini Xcrossband Dual-Band ExpressLRS Receiver"},"content":{"rendered":"

\"\"<\/p>\n

XR4 is an advanced, dual-band receiver with two LR1121 RF transceivers designed to operate with the modern ExpressLRS Gemini Xrossband (Gem-X) protocol. It seamlessly supports both 2.4 GHz and Sub-G 900 MHz frequency bands, and two T-shaped antennas ensure the highest level of signal sensitivity and connection stability for optimal performance. Integrated two independent RF circuits allow XR4 to operate flexibly: you can choose single-frequency (Gemini) or dual-frequency (Xrossband) operating modes, adapting the device to individual needs. The installed Wi-Fi module allows you to easily update the software and configure the receiver via a convenient WebUI interface on a computer or mobile device. XR4 features extremely low latency and high refresh rate, ensuring stable and reliable RF communication even in difficult conditions or over long distances. Thanks to its compact design, this receiver is ideal for drones or fixed-wing models. XR4 is the safest and most reliable RF communication solution even in the most challenging conditions.<\/p>\n

Features:<\/strong><\/p>\n

\u2022 True dual-channel reception \u2013 for greater signal reliability;
\n\u2022 Unparalleled connection stability with ExpressLRS Gemini Xrossband technology;
\n\u2022 Compatible with ExpressLRS 2.4 GHz, Sub-G 900 MHz, Gemini and Gemini Xrossband (Gem-X) modes;
\n\u2022 ESP32D4 \u2013 high-performance microcontroller;
\n\u2022 Two Semtech LR1121 transceivers;
\n\u2022 Additional UART port for advanced functions;
\n\u2022 Castled type contacts \u2013 for convenient soldering.<\/p>\n

Specification:<\/strong><\/p>\n

\u2022 Item: XR4 Gemini Xrossband dual-frequency receiver;
\u2022 Controller (MCU): ESP32D4;
\u2022 RF chip: LR1121 \u00d7 2;
\u2022 RF connector: IPEX-1 \u00d7 2;
\u2022 Antennas: Dual-frequency T-shaped antennas \u00d7 2 (included);
\u2022 Frequency range: 2.4 GHz \/ Sub-G 900 MHz;
\u2022 Telemetry transmission power: 100 mW;
\u2022 Maximum reception refresh rate: DK500 Hz \/ K1000 Hz;
\u2022 Minimum receiver refresh rate: 50 Hz;
\u2022 Operating voltage: DC 4.5 \u2013 8.4 V;
\u2022 Weight: 1.7 g (without antennas);
\u2022 Dimensions: 22 mm \u00d7 18 mm \u00d7 4 mm;
\u2022 Software version: ExpressLRS v3.5.1 (pre-installed);
\u2022 Software (FW Target): RadioMaster XR4 2.4\/900 Gemini RX;
\u2022 Interface 1: CRSF;
\u2022 Interface 2: UART.<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\" \"\" \"\" \"\"<\/p>\n

\"\"\"\"<\/p>\n

Package:<\/strong><\/p>\n

1\u00d7 XR4 Gemini Xrossband dual-frequency receiver;
\n2\u00d7 Dual-frequency T-shaped antennas;
\n1\u00d7 CRSF connection cable;
\n3\u00d7 Thermo tubes;
\n1\u00d7 Instruction card.<\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

The XR4 is an advanced, dual-frequency receiver featuring two LR1121 RF transceivers designed to operate with the advanced ExpressLRS Gemini Xrossband (Gem-X) protocol.<\/span><\/p>\n

\"\"\u00a0 \u00a01 \u2013 2 days<\/strong><\/span><\/p>","protected":false},"featured_media":8964,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[497],"product_cat":[682],"product_tag":[569,568,563,176,571,357,570],"class_list":{"0":"post-8949","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-radiomaster","7":"product_cat-imtuvai-rx","8":"product_tag-2-4-ghz","9":"product_tag-900-mhz","10":"product_tag-dual-band","11":"product_tag-elrs","12":"product_tag-gemini-xrossband","13":"product_tag-radiomaster","14":"product_tag-xr4","16":"first","17":"instock","18":"taxable","19":"shipping-taxable","20":"purchasable","21":"product-type-simple"},"yoast_head":"\nRadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver - 1dronas.lt<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/1dronas.lt\/en\/produktas\/radiomaster-xr4-gemini-xrossband-dual-band-expresslrs-receiver\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver - 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