{"id":1191,"date":"2026-08-31T13:25:35","date_gmt":"2026-08-31T10:25:35","guid":{"rendered":"https:\/\/stech.army\/?post_type=product&#038;p=1191"},"modified":"2026-09-16T14:38:21","modified_gmt":"2026-09-16T11:38:21","slug":"rx-radiomaster-xr4-2-4-915","status":"publish","type":"product","link":"https:\/\/stech.army\/en\/product\/rx-radiomaster-xr4-2-4-915\/","title":{"rendered":"Radiomaster XR4 receiver"},"content":{"rendered":"<p class=\"isSelectedEnd\">RadioMaster XR4 is an ultra-lightweight dual-band ExpressLRS Gemini Xrossband receiver that operates simultaneously at 2.4 GHz and 868\/900 MHz. Two Semtech LR1121 chips provide parallel reception of two data streams to increase communication immunity to interference. Two complete antennas with IPEX-1 connectors can be flexibly placed on the drone. The receiver is pre-installed with ExpressLRS version 3.5.1 with support for DK500 and K1000 modes.<\/p>\n<p class=\"isSelectedEnd\">Key benefits:<\/p>\n<ul>\n<li class=\"isSelectedEnd\">ultra-lightweight design \u2014 weight 1.7 g without antennas;<\/li>\n<li class=\"isSelectedEnd\">simultaneous operation in two bands: 2.4 GHz and 900 MHz;<\/li>\n<li class=\"isSelectedEnd\">two Semtech LR1121 chips;<\/li>\n<li class=\"isSelectedEnd\">support for K-modes DK500 and K1000;<\/li>\n<li class=\"isSelectedEnd\">pre-installed version of ExpressLRS 3.5.1;<\/li>\n<li class=\"isSelectedEnd\">CRSF and UART interfaces;<\/li>\n<li class=\"isSelectedEnd\">supply voltage: 5\u201312.6 V.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Equipment:<\/p>\n<ul>\n<li>XR4 Gemini receiver \u2014 1 pc.;<\/li>\n<li>dual-band T-shaped antennas \u2014 2 pcs.;<\/li>\n<li>CRSF cable \u2014 1 pc.;<\/li>\n<li>heat shrink tubes \u2014 3 pcs.;<\/li>\n<li>instruction card \u2014 1 pc.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>RadioMaster XR4 Gemini Xrossband is an ultra-lightweight receiver that supports operation in the 2.4 GHz and 900 MHz bands. Equipped with two LR1121 chips and IPEX-1 connectors, it operates using CRSF and UART protocols and supports ExpressLRS version 3.5.1.<\/p>","protected":false},"featured_media":1207,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[18,27],"product_tag":[],"class_list":["post-1191","product","type-product","status-publish","has-post-thumbnail","product_cat-uav","product_cat--rx","first","onbackorder","shipping-taxable","product-type-simple"],"acf":{"dl_enabled":false,"dl_label":"","dl_file":false,"dl_label_en":"","dl_file_en":false},"_links":{"self":[{"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/product\/1191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/media\/1207"}],"wp:attachment":[{"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/media?parent=1191"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/product_brand?post=1191"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/product_cat?post=1191"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/stech.army\/en\/wp-json\/wp\/v2\/product_tag?post=1191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}