{"id":941,"date":"2021-08-06T17:28:33","date_gmt":"2021-08-06T15:28:33","guid":{"rendered":"http:\/\/originhobbies.com\/?post_type=product&#038;p=941"},"modified":"2026-04-06T01:06:57","modified_gmt":"2026-04-05T23:06:57","slug":"radiomaster-r81-nano-receiver-2-4ghz-8ch-sbus-frsky","status":"publish","type":"product","link":"https:\/\/originhobbies.com\/da\/shop\/radio-control\/radio-receivers\/frsky-protocol\/radiomaster-r81-nano-receiver-2-4ghz-8ch-sbus-frsky\/","title":{"rendered":"Radiomaster R81 Nano receiver 2.4GHz 8CH SBUS FrSky D8"},"content":{"rendered":"<p>Radiomaster R81 Nano receiver is a great choice for FPV drones\/race quads. It is a light weight full range 8CH 2.4GHz receiver, compatible with FrSky D8 protocol and supports RSSI signal strength on channel 9.<\/p>\n<p><em>* Only for Multi-protocol radios. Doesn\u2019t support Frsky transmitters.<\/em><\/p>\n<h4>Specifications<\/h4>\n<p><span class=\"markedContent\"><span dir=\"ltr\" role=\"presentation\">Channels: 8 for functions<\/span> 1 for RSSI strength<br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Frequency range: 2400-2483.5Mhz<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Power input range: 4.5-6V<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Signal format: D8<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Output format: SBUS<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Support return: support return RSSI<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Control distance: more than 1km<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Antenna length: Approximaltly 6cm<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Size: 17x11mm<\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">Weight: 2grams<\/span><\/span><\/p>\n<h4>RSSI output<\/h4>\n<p><span class=\"markedContent\"><span dir=\"ltr\" role=\"presentation\">This receiver has a total of 9 SBUS channels (Sbus has 8 control channels + 1 RSSI channel). Channels 1-8 <\/span><span dir=\"ltr\" role=\"presentation\">are controlled by the remote controller, the 9th channel is the signal strength RSSI value output by the <\/span><span dir=\"ltr\" role=\"presentation\">receiver, which can be read by various flight controllers and sent to the OSD to Show signal strength in the <\/span><br role=\"presentation\" \/><span dir=\"ltr\" role=\"presentation\">FPV video feed.<\/span><\/span><\/p>\n<h4>Includes<\/h4>\n<ul>\n<li>R81 Nano Receiver with 2 antennae<\/li>\n<li>Servo connector cable<\/li>\n<li>Heat shrink sleeve for receiver<\/li>\n<li>Instruction sheet<\/li>\n<\/ul>\n<h4>Downloads<\/h4>\n<ul>\n<li><a href=\"https:\/\/originhobbies.com\/wp-content\/uploads\/2021\/08\/rx-r81-user-manual.pdf\" target=\"_blank\" rel=\"noopener\">User Manual<\/a><\/li>\n<\/ul>\n<h4>Channel Map<\/h4>\n<p>Please use the following channel map for M1\/M2 helicopter on EdgeTX\/OpenTX<\/p>\n<ol>\n<li>Aileron<\/li>\n<li>Elevator [<strong>Inverted<\/strong>]<\/li>\n<li>Throttle [<strong>Inverted<\/strong>]<\/li>\n<li>Rudder<\/li>\n<li>Stability mode (ON\/OFF) [<strong>Inverted<\/strong>]<\/li>\n<li>Collective Pitch<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Radiomaster R81 Nano receiver is a great choice for FPV drones\/race quads. It is a light weight full range 8CH 2.4GHz receiver, compatible with FrSky D8 protocol and supports RSSI signal strength on channel 9. * Only for Multi-protocol radios. Doesn\u2019t support Frsky transmitters. Specifications Channels: 8 for functions 1 for RSSI strengthFrequency range: 2400-2483.5MhzPower [&hellip;]<\/p>\n","protected":false},"featured_media":944,"comment_status":"open","ping_status":"closed","template":"","meta":{"_eb_attr":""},"product_brand":[],"product_cat":[50,233],"product_tag":[],"class_list":{"0":"post-941","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-radio-receivers","7":"product_cat-frsky-protocol","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/product\/941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/comments?post=941"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/media\/944"}],"wp:attachment":[{"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/media?parent=941"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/product_brand?post=941"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/product_cat?post=941"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/originhobbies.com\/da\/wp-json\/wp\/v2\/product_tag?post=941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}