{"product_id":"radiomaster-rp4td-m-receiver","title":"RadioMaster RP4TD-M ExpressLRS 2.4GHz Mini True Diversity Receiver, TCXO, Dual SX1281, CRSF","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe RadioMaster RP4TD-M ExpressLRS 2.4GHz Mini True Diversity Receiver is a compact, lightweight receiver designed for builds where space and weight are critical. It uses dual-channel 2.4GHz radios with Gemini true diversity to help mitigate interference, and includes a built-in TCXO for stable frequency control. Weight is 1.00g (without antennas) \/ 3.30g (with antennas).\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMini size true diversity Gemini receiver\u003c\/li\u003e\n\u003cli\u003eClass leading SNR and RSSI performance\u003c\/li\u003e\n\u003cli\u003eBuilt-in TCXO (temperature compensated crystal oscillator)\u003c\/li\u003e\n\u003cli\u003eOptimized PCB design for better heat dissipation\u003c\/li\u003e\n\u003cli\u003eDual SX1281 transceivers (SX1281 x 2)\u003c\/li\u003e\n\u003cli\u003eUpgraded rigid dual-antenna design for greater durability and performance\u003c\/li\u003e\n\u003cli\u003eTelemetry RF power output: max 2 x 10mW\u003c\/li\u003e\n\u003cli\u003eCompatible with all 2.4GHz ExpressLRS modules and transmitters with built-in 2.4GHz ExpressLRS\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\u003eRP4TD-M ExpressLRS 2.4GHz Diversity 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\u003eESP32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Chip\u003c\/td\u003e\n\u003ctd\u003eSX1281 x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna\u003c\/td\u003e\n\u003ctd\u003e65mm 2.4GHz T Antenna x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e2.4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Refresh Rate\u003c\/td\u003e\n\u003ctd\u003e500Hz \/ F1000Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelemetry RF Power\u003c\/td\u003e\n\u003ctd\u003eMax 2 x 10mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Voltage\u003c\/td\u003e\n\u003ctd\u003eDC 5.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi Updates\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.00g (without antennas) \/ 3.30g (with antennas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e18.10 x 16.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e2.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware Version\u003c\/td\u003e\n\u003ctd\u003eExpressLRS V3.4.3 pre-installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFW Target\u003c\/td\u003e\n\u003ctd\u003eRadioMaster RP4TD-M 2400 RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface\u003c\/td\u003e\n\u003ctd\u003eCRSF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna dimension markings\u003c\/td\u003e\n\u003ctd\u003e79.00mm and 65.00mm (as labeled)\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 TCXO ensures high stability and accuracy in frequency control, compensating for temperature variations. This helps maintain consistent and reliable signal reception and reduces frequency drift over time. More technical background is available here: \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\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x RP4TD-M ExpressLRS True 2.4GHz Diversity Receiver\u003c\/li\u003e\n\u003cli\u003e1 x CRSF wire\u003c\/li\u003e\n\u003cli\u003e3 x Heat-shrinkable tube\u003c\/li\u003e\n\u003cli\u003e2 x 65mm 2.4GHz T antenna (installed on receiver)\u003c\/li\u003e\n\u003cli\u003e1 x User manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor wiring or compatibility questions (CRSF, ExpressLRS versions, or firmware target selection), contact support@rcdrone.top or visit https:\/\/rcdrone.top\/.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLightweight FPV drones and racing builds\u003c\/li\u003e\n\u003cli\u003eRC aircraft and multirotors using ExpressLRS 2.4GHz with CRSF\u003c\/li\u003e\n\u003cli\u003eRobotics and RC projects that require a compact ExpressLRS receiver\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Products\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRP1 ELRS Nano Receiver\u003c\/li\u003e\n\u003cli\u003eRP2 ELRS Nano Receiver\u003c\/li\u003e\n\u003cli\u003eRP3 ELRS Nano Receiver\u003c\/li\u003e\n\u003cli\u003eRP4TD ELRS Diversity Receiver\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"RadioMaster RP4TD-M ExpressLRS 2.4GHz mini true diversity receiver with dual-antenna design and TCXO\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity.jpg?v=1780749843\"\u003e\u003cp\u003eBuilt for tight FPV builds, the RP4TD-M pairs Gemini true diversity reception with a compact footprint and stable TCXO timing.\u003c\/p\u003e\n\u003cimg alt=\"Close-up of RP4TD-M receiver PCB highlighting the TCXO oscillator component for stable 2.4GHz performance\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_639bb9b1-8d37-4bc5-b989-79eca7132c84.jpg?v=1780749849\"\u003e\u003cp\u003eA built-in TCXO helps keep frequency control stable across temperature changes for more consistent link performance.\u003c\/p\u003e\n\u003cimg alt=\"Macro view of RP4TD-M board showing dual Semtech SX1281 transceivers for ExpressLRS 2.4GHz diversity\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_945d8817-61d6-40c9-8fe4-9d1c051bb0a3.jpg?v=1780749855\"\u003e\u003cp\u003eDual SX1281 radios support true diversity operation to help mitigate interference in challenging RF environments.\u003c\/p\u003e\n\u003cimg alt=\"Two rigid 65mm 2.4GHz T antennas for the RP4TD-M receiver, designed for dual-antenna diversity placement\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_cfccbdc0-6cb2-4c86-8b07-1c5ace79fc05.jpg?v=1780749861\"\u003e\u003cp\u003eThe upgraded rigid T antennas are made for durable dual-antenna routing on lightweight frames.\u003c\/p\u003e\n\u003cimg alt=\"Side-by-side size comparison of RadioMaster RP4TD and RP4TD-M ExpressLRS receivers for racing builds\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_25f0238c-0b65-4fc5-8493-f8491da21f09.jpg?v=1780749867\"\u003e\u003cp\u003eSmaller and lighter than the RP4TD, the RP4TD-M is a better fit for racing and ultralight builds.\u003c\/p\u003e\n\u003cimg alt=\"RP4TD-M ExpressLRS receiver specifications table showing ESP32 MCU, dual SX1281, 5V input, CRSF and 500Hz\/1000Hz\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_841e1f27-5485-4b4b-b058-75d511ffeb8d.jpg?v=1780749903\"\u003e\u003cp\u003eKey specs at a glance: ESP32 + dual SX1281, CRSF bus, 5.0V input, and up to 500Hz \/ F1000Hz refresh rates.\u003c\/p\u003e\n\u003cimg alt=\"RP4TD-M receiver on a digital scale reading 1.00g, showing the lightweight mini receiver body without antennas\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_ca5b2498-26a2-44dc-aad9-76624624bbe1.jpg?v=1780749909\"\u003e\u003cp\u003eAt just 1.00g without antennas, the receiver keeps overall AUW down on micro and racing builds.\u003c\/p\u003e\n\u003cimg alt=\"Dimension diagram of RP4TD-M receiver (18.10 x 16.00 x 2.00mm) with antenna length markings 79mm and 65mm\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/RadioMaster-RP4TD-M-ExpressLRS-24GHz-Mini-True-Diversity_5380dd0b-da7d-4c5b-befb-a20c267d0819.jpg?v=1780749915\"\u003e\u003cp\u003eExact dimensions (18.10 × 16.00 × 2.00mm) and antenna length markings help plan mounting and antenna placement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RadioMaster","offers":[{"title":"FCC","offer_id":52970869588192,"sku":"HP0157.RX-RP4TD-M-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"LBT","offer_id":52970869620960,"sku":"HP0157.RX-RP4TD-M-2","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/02_8d22f5a0-d4e1-4b20-9623-388af80da6d8.jpg?v=1780600371","url":"https:\/\/rcdrone.top\/tr\/products\/radiomaster-rp4td-m-receiver","provider":"RCDrone","version":"1.0","type":"link"}