{"product_id":"beitian-bt-4820-antenna","title":"Beitian BT-4820 Full-Frequency L-Band RTK GNSS Antenna OEM, GPS\/BDS\/GLONASS\/Galileo for Survey","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eBeitian BT-4820 is a full-frequency, L-Band-capable RTK GNSS antenna designed for positioning applications such as autonomous driving, surveying\/mapping, and precision agriculture. The series supports multiple satellite systems and offers configurable connector and cable options for OEM integration.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMulti-constellation GNSS reception for positioning applications.\u003c\/li\u003e\n\u003cli\u003eFull-frequency + L-Band support (BT-4820 working mode list includes L-Band).\u003c\/li\u003e\n\u003cli\u003eHigh-gain LNA specification: 35±2 dB (series spec shown for both models).\u003c\/li\u003e\n\u003cli\u003eSupports multiple antenna connector types and cable styles for customization (TNC, SMA, MCX, MMCX, IPEX, etc.).\u003c\/li\u003e\n\u003cli\u003eOperating temperature range: -40°C to +85°C.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ch3\u003eModel: BT-4820\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking mode\u003c\/td\u003e\n\u003ctd\u003eGPS L1\/L2\/L5; BDS B1I\/B2I\/B3I\/B1C\/B2a\/B2b; GLONASS L1\/L2\/L3; GALILEO E1\/E5a\/E5b\/E6; SBAS L1\/L5; QZSS L1\/L2\/L5\/L6; IRNSS L5; L-Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e35±2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise figure\u003c\/td\u003e\n\u003ctd\u003e≤2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput VSWR\u003c\/td\u003e\n\u003ctd\u003e≤2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIn-band flatness\u003c\/td\u003e\n\u003ctd\u003e±2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput impedance\u003c\/td\u003e\n\u003ctd\u003e50Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e3.3-12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply current\u003c\/td\u003e\n\u003ctd\u003e≤45 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector type\u003c\/td\u003e\n\u003ctd\u003eMCX-JW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eDia 120 x 23.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e180 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003eRG178\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable length\u003c\/td\u003e\n\u003ctd\u003e10 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWet degree\u003c\/td\u003e\n\u003ctd\u003e40% to 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eModel: BT-4020 (variant reference)\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking mode\u003c\/td\u003e\n\u003ctd\u003eGPS L1\/L2; GLONASS L1\/L2; BDS B1\/B2\/B3; GALILEO E1\/E5b\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e35±2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise figure\u003c\/td\u003e\n\u003ctd\u003e≤2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput VSWR\u003c\/td\u003e\n\u003ctd\u003e≤2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIn-band flatness\u003c\/td\u003e\n\u003ctd\u003e±2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput impedance\u003c\/td\u003e\n\u003ctd\u003e50Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e3.3-12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply current\u003c\/td\u003e\n\u003ctd\u003e≤45 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector type\u003c\/td\u003e\n\u003ctd\u003eMCX-JW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eDia 120 x 16.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e196 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003eRG178\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable length\u003c\/td\u003e\n\u003ctd\u003e10 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWet degree\u003c\/td\u003e\n\u003ctd\u003e40% to 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eConnector \u0026amp; Cable Options (Customization Reference)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCommon connector types shown: TNC-J, TNC-K, SMA-J, SMA-JW, MCX-JW, MMCX-JW, IPEX.\u003c\/li\u003e\n\u003cli\u003eCommon cable types shown: 50-3 line, 316 line, 174 line, 178 line, 1.13 line.\u003c\/li\u003e\n\u003cli\u003eNote: Cable length, connector, and wire options may require additional customization. For customization requests, contact https:\/\/rcdrone.top\/ or email support@rcdrone.top.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNotes on Model Replacement (As Provided)\u003c\/h2\u003e\u003cp\u003eBT-4020 \/ BT-4820 can replace: BA-4820, BA-4020, BAW-4820, BAW-4020, BMW-4820, BMW-4020, BXW-4820, BXW-4020, BT-4820, BT-4020.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutopilot systems\u003c\/li\u003e\n\u003cli\u003eSurveying and mapping\u003c\/li\u003e\n\u003cli\u003ePrecision agriculture\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"BT-4820 full-frequency L-Band RTK GNSS antenna connector options and BT-4820 vs BT-4020 spec chart\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-RTK-Full-Frequency-L-Band-Autonomous-DrivingSurvey.png?v=1783598285\"\u003e\u003cp\u003eChoose the connector and cable style that fits your OEM build, with BT-4820 specifications listed alongside the BT-4020 variant for reference.\u003c\/p\u003e\n\u003cimg alt=\"Beitian BT-4820 GNSS antenna customization overview with key parameters (GPS L1\/L2, BDS, GLONASS, Galileo)\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-RTK-Full-Frequency-L-Band-Autonomous-DrivingSurvey_4b3b6f51-c020-4a30-980e-f672f7b0e0e4.png?v=1783598295\"\u003e\u003cp\u003eCustomization support covers debugging requirements, sample-based builds, and concept-to-product antenna projects for integration workflows.\u003c\/p\u003e\n\u003cimg alt=\"BT-4820 antenna top and bottom views with marketing panel highlighting full-range reception and 35±2 dB gain\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-RTK-Full-Frequency-L-Band-Autonomous-DrivingSurvey_26fff233-b39e-4a29-b6ef-70121cfe8332.png?v=1783598305\"\u003e\u003cp\u003eFull-constellation, full-frequency reception is paired with a high-gain LNA design to support stable RTK positioning in demanding environments.\u003c\/p\u003e\n\u003cimg alt=\"Multiple connection methods for BT-4820 GNSS antenna with SMA, IPEX, TNC, and MCX connector examples\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-RTK-Full-Frequency-L-Band-Autonomous-DrivingSurvey_04c670d3-994d-4be1-af4a-2942fb499c64.png?v=1783598315\"\u003e\u003cp\u003eMultiple connector families are available for clean routing and easy installation across different GNSS receiver and autopilot platforms.\u003c\/p\u003e\n\u003cimg alt=\"Beitian GNSS antenna product display with BT-4820 housing views highlighting compact round form factor\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-RTK-Full-Frequency-L-Band-Autonomous-DrivingSurvey_66a1eccf-78d1-4276-869f-98cd93a2f546.png?v=1783598324\"\u003e\u003cimg alt=\"Application scenarios collage for BT-4820 GNSS antenna: surveying and mapping, precision agriculture, and vehicle positioning\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-RTK-Full-Frequency-L-Band-Autonomous-DrivingSurvey_2992ec5a-c34e-4d32-a129-92f42e57e9f4.png?v=1783598335\"\u003e\n\u003c\/div\u003e","brand":"Beitian","offers":[{"title":"BT-4020 MCX-JW 10cm","offer_id":53340919136480,"sku":"BT-4020-1","price":69.94,"currency_code":"USD","in_stock":true},{"title":"BT-4820 MCX-JW 10cm","offer_id":53340919169248,"sku":"BT-4020-2","price":79.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/BT-4020-E.png?v=1783565898","url":"https:\/\/rcdrone.top\/ms\/products\/beitian-bt-4820-antenna","provider":"RCDrone","version":"1.0","type":"link"}