{"product_id":"radiomaster-rp3-h-receiver","title":"RadioMaster RP3-H ExpressLRS 2.4GHz Nano Receiver, Dual Antenna, TCXO, CRSF\/S.Bus for Helicopters","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe RadioMaster RP3-H ExpressLRS 2.4GHz Nano Receiver is designed for use with the Nexus Control System and is compatible with CRSF\/S.Bus enabled flight controllers. It features a rugged integrated housing for modern helicopter frames, built-in TCXO oscillators for stable RF performance, and an Ext-V telemetry input for older ESCs that do not provide battery voltage telemetry via the control unit. Built-in WiFi supports firmware updates without removing the receiver.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePerfect for helicopters and applications needing a rugged cased serial receiver\u003c\/li\u003e\n\u003cli\u003ePlug'n'play, solder-free receiver compatible with NEXUS Heli flight controller\u003c\/li\u003e\n\u003cli\u003eDual-antenna diversity (antenna switching) for improved signal stability and range\u003c\/li\u003e\n\u003cli\u003eLow Noise Amplifier (LNA) for better receiver range\u003c\/li\u003e\n\u003cli\u003eSkyworks SKY66112 power amplifier (PA) for improved telemetry performance (up to 100mW telemetry RF power)\u003c\/li\u003e\n\u003cli\u003eOptimized PCB design for better heat dissipation\u003c\/li\u003e\n\u003cli\u003eBuilt-in TCXO (temperature compensated crystal oscillator)\u003c\/li\u003e\n\u003cli\u003eAuto-detects voltage telemetry from external battery voltage or receiver battery\/ESC BEC voltage\u003c\/li\u003e\n\u003cli\u003eSupports LoRa and FLRC 2.4GHz RF links\u003c\/li\u003e\n\u003cli\u003eCompatible with all 2.4GHz ExpressLRS modules and transmitters with built-in 2.4GHz ExpressLRS\u003c\/li\u003e\n\u003cli\u003eReceiver label markings include: BOOT, TX, RX, and EXT-V\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem\u003c\/td\u003e\n\u003ctd\u003eRP3-H ExpressLRS 2.4GHz Nano Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eISM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMCU\u003c\/td\u003e\n\u003ctd\u003eESP8285\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Chip\u003c\/td\u003e\n\u003ctd\u003eSX1281\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelemetry RF power\u003c\/td\u003e\n\u003ctd\u003eMax 100mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna\u003c\/td\u003e\n\u003ctd\u003e150mm 2.4GHz Antenna x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e2.404 - 2.479 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum receive refresh rate\u003c\/td\u003e\n\u003ctd\u003e500Hz \/ F1000Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum receiver refresh rate\u003c\/td\u003e\n\u003ctd\u003e25Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking voltage\u003c\/td\u003e\n\u003ctd\u003eDC 4.5 - 8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage detection range\u003c\/td\u003e\n\u003ctd\u003eDC 4.0 - 35V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5.1g (including two antennas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e28 x 24 x 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware Version\u003c\/td\u003e\n\u003ctd\u003eExpressLRS v3.3.1 pre-installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFW Target\u003c\/td\u003e\n\u003ctd\u003eRadioMaster RP3-H Diversity 2400 RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus interface\u003c\/td\u003e\n\u003ctd\u003eCRSF\/S.Bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eTCXO (temperature compensated crystal oscillator)\u003c\/h2\u003e\u003cp\u003eThe built-in TCXO oscillators help maintain stability and accuracy in frequency control across temperature changes, supporting consistent signal reception and reduced frequency drift over time. Reference: \u003ca href=\"https:\/\/www.expresslrs.org\/hardware\/crystal-frequency-error\" rel=\"noopener\" target=\"_blank\"\u003ehttps:\/\/www.expresslrs.org\/hardware\/crystal-frequency-error\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eDimensions\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpecification: 28 x 24 x 8mm\u003c\/li\u003e\n\u003cli\u003eDimension diagram labels: 28.00MM, 15.40MM, 8.00MM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelicopters (rugged cased serial receiver for modern heli frames)\u003c\/li\u003e\n\u003cli\u003eCRSF\/S.Bus receiver installations requiring Ext-V telemetry input support\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor installation help or order support, contact support@rcdrone.top or visit https:\/\/rcdrone.top\/.\u003c\/p\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x RP3-H ExpressLRS 2.4GHz Nano Receiver\u003c\/li\u003e\n\u003cli\u003e2 x 150mm IPX1 2.4GHz T Antenna (installed)\u003c\/li\u003e\n\u003cli\u003e1 x JST-GH CRSF 4 wire Pigtail\u003c\/li\u003e\n\u003cli\u003e1 x JST-GH 4 wire to JST-GH CRSF cable\u003c\/li\u003e\n\u003cli\u003e1 x JST-GH 4 wire to single Servo pin (single dupont connectors)\u003c\/li\u003e\n\u003cli\u003e1 x Voltage telemetry wire\u003c\/li\u003e\n\u003cli\u003e1 x Quick start guide\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eManuals\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/RP3-H_Receiver_User_Manual.pdf?v=1718329786\" rel=\"noopener\" target=\"_blank\"\u003eRP3-H Receiver User Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eExpressLRS project information: \u003ca href=\"https:\/\/www.expresslrs.org\/\" rel=\"noopener\" target=\"_blank\"\u003ehttps:\/\/www.expresslrs.org\/\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eRotorflight project information: \u003ca href=\"https:\/\/www.rotorflight.org\/\" rel=\"noopener\" target=\"_blank\"\u003ehttps:\/\/www.rotorflight.org\/\u003c\/a\u003e\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"RadioMaster RP3-H ExpressLRS 2.4GHz nano receiver in rugged case with labeled BOOT, TX\/RX and EXT-V ports\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver.jpg?v=1780749504\"\u003e\u003cp\u003eThe RadioMaster RP3-H ExpressLRS 2.4GHz Nano Receiver is built for rugged helicopter installs and CRSF\/S.Bus flight controllers.\u003c\/p\u003e\n\u003cimg alt=\"Graphic highlighting dual TCXO oscillators for stable, accurate RF performance across temperature changes\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_04fd6f42-c86d-411c-9a05-33eb287f5722.jpg?v=1780749510\"\u003e\u003cp\u003eDual TCXO oscillators help keep the link stable by reducing frequency drift in changing conditions.\u003c\/p\u003e\n\u003cimg alt=\"RP3-H ExpressLRS receiver installed with plug-and-play, solder-free cable connection to the Nexus Heli controller\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_bcad835e-ab9a-4823-be54-15acbb7af7c4.jpg?v=1780749516\"\u003e\u003cp\u003ePlug-and-play wiring makes it easy to connect to the NEXUS Heli flight controller without soldering.\u003c\/p\u003e\n\u003cimg alt=\"Receiver mounted in a helicopter frame, emphasizing rugged cased serial receiver design and EXT-V telemetry input\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_e47c773d-ec37-452f-9c72-e56e9ae971a5.jpg?v=1780749522\"\u003e\u003cp\u003eA tough integrated housing fits modern heli frames, with an EXT-V input for battery voltage telemetry on older ESC setups.\u003c\/p\u003e\n\u003cimg alt=\"Promo graphic calling out low-noise amplifier for range and power amplifier supporting up to 100mW telemetry power\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_e4d2ee9f-f3cc-4d68-a876-97328cd33f06.jpg?v=1780749529\"\u003e\u003cp\u003eAn onboard LNA and PA are designed to improve reception and support up to 100mW telemetry RF power.\u003c\/p\u003e\n\u003cimg alt=\"Dual 150mm 2.4GHz antennas laid out to illustrate antenna diversity for improved signal stability and range\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_d993c2ad-0bd3-49a1-b4ff-209dcfd688d0.jpg?v=1780749535\"\u003e\u003cp\u003eDual-antenna diversity improves signal stability and helps maintain control in challenging orientations.\u003c\/p\u003e\n\u003cimg alt=\"RP3-H receiver PCB exposed, highlighting optimized PCB layout for better heat dissipation during operation\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_da5b67ab-25b0-4dde-9b59-261736478940.jpg?v=1780749542\"\u003e\u003cp\u003eAn optimized PCB layout is designed to dissipate heat efficiently during demanding use.\u003c\/p\u003e\n\u003cimg alt=\"Specifications table for the RP3-H ExpressLRS 2.4GHz receiver with voltage range, refresh rates, and interfaces\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_9b1d7ab5-f66b-42d7-8493-b12846bd1656.jpg?v=1780749548\"\u003e\u003cp\u003eKey specifications are summarized for quick compatibility checks, including CRSF\/S.Bus and supported refresh rates.\u003c\/p\u003e\n\u003cimg alt=\"RP3-H receiver dimension graphic showing 28.00 mm length, 24.00 mm width, and 8.00 mm height with antennas\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_2d0cb65e-10bc-4d48-882f-2197e399d7c5.jpg?v=1780749554\"\u003e\u003cimg alt=\"Package contents layout showing RP3-H receiver, voltage telemetry wire, and included JST-GH\/SF cable options\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP3-H-ExpressLRS-24GHz-Nano-Receiver_1b2994c1-6fca-4c5a-8210-354c5846d3ba.jpg?v=1780749561\"\u003e\u003cp\u003eEverything needed for common installs is included: the RP3-H receiver plus telemetry and connection cables.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RadioMaster","offers":[{"title":"FCC","offer_id":52970863460576,"sku":"HP0157.0088-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"LBT","offer_id":52970863493344,"sku":"HP0157.0088-2","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/1_e932576b-2489-4707-ac44-476723c2a244.jpg?v=1780600226","url":"https:\/\/rcdrone.top\/zh\/products\/radiomaster-rp3-h-receiver","provider":"RCDrone","version":"1.0","type":"link"}