{"product_id":"beitian-bt-35a-antenna","title":"Beitian BT-35A\/BT-35B External GNSS Antenna 28±2dB SMA-J RG174 3m for Car \u0026 Marine Navigation","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe Beitian BT-35 series is an external \u003cstrong\u003eGNSS antenna\u003c\/strong\u003e with an integrated LNA, designed for multi-constellation positioning (GPS\/BDS\/GLONASS\/Galileo). It is available in two mounting variants: \u003cstrong\u003eBT-35A\u003c\/strong\u003e (magnetic bottom) and \u003cstrong\u003eBT-35B\u003c\/strong\u003e (double-sided tape). With an SMA-J connector and RG174 cable, it is suitable for automotive navigation and marine tracking installations where stable signal reception is required.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWorking mode: BDS B1 \/ GPS L1 \/ GLONASS L1 \/ GALILEO E1\u003c\/li\u003e\n\u003cli\u003eLNA gain: 28±2dB\u003c\/li\u003e\n\u003cli\u003eLow VSWR: \u0026lt;1.5\u003c\/li\u003e\n\u003cli\u003ePolarization: RHCP (right-handed circular)\u003c\/li\u003e\n\u003cli\u003e360° horizontal coverage angle\u003c\/li\u003e\n\u003cli\u003eConnector: SMA-J; Cable: RG174; Cable length: 3m\u003c\/li\u003e\n\u003cli\u003eMounting options: magnetic bottom (BT-35A) or double-sided tape (BT-35B)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ch3\u003eReceiving Frequency Range \/ Bands\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBDS B1\u003c\/td\u003e\n\u003ctd\u003e1561MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPS L1\u003c\/td\u003e\n\u003ctd\u003e1575.42MHz (also shown as 1575MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLONASS L1\u003c\/td\u003e\n\u003ctd\u003e1602MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGALILEO E1\u003c\/td\u003e\n\u003ctd\u003e1575.42MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eCeramic Antenna Characteristics\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e2dBi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput VSWR\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e50Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolarization\u003c\/td\u003e\n\u003ctd\u003eRHCP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxis ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorizontal coverage angle\u003c\/td\u003e\n\u003ctd\u003e360°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eLNA Specification\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLNA Gain\u003c\/td\u003e\n\u003ctd\u003e28±2dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise figure\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2dB (Only LNA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput VSWR\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1.5\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\u003ePassband ripple\u003c\/td\u003e\n\u003ctd\u003e±2.0dB (Only LNA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e2.8V-5.0V (also shown as 3.0-5.0V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply current\u003c\/td\u003e\n\u003ctd\u003e≤20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eEnvironment\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\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% - 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eMechanical \/ Interface\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eSMA-J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003eRG174 Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable length\u003c\/td\u003e\n\u003ctd\u003e3m (also shown as 3000±30)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;120g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eModel Variants\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBT-35A\u003c\/td\u003e\n\u003ctd\u003e49.5*49.5*16mm (also shown as 49.50±0.2 and 16.00±0.1)\u003c\/td\u003e\n\u003ctd\u003eMagnetic Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBT-35B\u003c\/td\u003e\n\u003ctd\u003e49.5*49.5*17.8mm\u003c\/td\u003e\n\u003ctd\u003eDouble-sided tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e1 x Beitian BT-35 series external GNSS antenna (selected model: BT-35A or BT-35B)\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCar navigation\u003c\/li\u003e\n\u003cli\u003eMarine tracking \/ shipboard installations\u003c\/li\u003e\n\u003cli\u003eDash cam positioning systems\u003c\/li\u003e\n\u003cli\u003eTraffic light and infrastructure timing\/positioning equipment\u003c\/li\u003e\n\u003cli\u003eMeasuring instruments (including acreage meters)\u003c\/li\u003e\n\u003cli\u003eElectric vehicles and unmanned vehicles\u003c\/li\u003e\n\u003cli\u003ePrecision agriculture, shipbuilding industry, driving test and driver training equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor selection help between BT-35A (magnet) and BT-35B (tape), or to confirm your device’s antenna bias voltage and SMA-J interface requirements, contact support at \u003ca href=\"https:\/\/rcdrone.top\/\"\u003ehttps:\/\/rcdrone.top\/\u003c\/a\u003e or email \u003ca href=\"mailto:support@rcdrone.top\"\u003esupport@rcdrone.top\u003c\/a\u003e.\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"BT-35A vs BT-35B GNSS antenna comparison table with size, mounting (magnet or tape), and 3m RG174 cable\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning.png?v=1783480287\"\u003e\u003cp\u003eChoose BT-35A for a magnetic base or BT-35B for double-sided tape mounting, with the same multi-constellation L1 reception and 3m lead.\u003c\/p\u003e\n\u003cimg alt=\"Beitian BT-35A\/BT-35B External GNSS Antenna promotional panel with supported GPS, BDS, GLONASS and Galileo bands\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning_b4dd3e9c-284c-4ad9-9818-5995a527d026.png?v=1783480299\"\u003e\u003cimg alt=\"Beitian BT-35A GNSS antenna product features listing: SMA-J interface, 28±2 dB LNA gain, VSWR \u0026lt;1.5, RHCP, 360° coverage\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning_c96bfc3e-8c71-4727-8164-ffba3b5a6bf6.png?v=1783480309\"\u003e\u003cp\u003eThe integrated LNA and RHCP ceramic element are designed for stable reception across GPS\/BDS\/GLONASS\/Galileo L1 bands.\u003c\/p\u003e\n\u003cimg alt=\"Close-up of BT-35 series antenna with SMA-J connector and RG174 coax cable, plus mechanical outline dimensions\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning_883c069d-4066-4a51-aeb9-fdf3fc1eb921.png?v=1783480319\"\u003e\u003cp\u003eSMA-J connectivity and an RG174 cable make it easy to route the antenna to your receiver while mounting the patch externally.\u003c\/p\u003e\n\u003cimg alt=\"Application collage for external GNSS antenna: car navigation, dash cam, traffic lights, unmanned vehicles and measurement instruments\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning_ea08c700-5b50-4e11-90d8-2113ac4928b3.png?v=1783480332\"\u003e\u003cimg alt=\"Package contents and ceramic antenna parameters table showing frequency bands, 2 dBi gain, 50Ω impedance, RHCP and VSWR \u0026lt;1.5\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning_bcf3b041-0e80-492d-bf02-a8714c6dd86a.png?v=1783480340\"\u003e\u003cp\u003eCore antenna specs are summarized for quick compatibility checks, including bands, impedance, polarization, and VSWR.\u003c\/p\u003e\n\u003cimg alt=\"Specification tables for LNA gain 28±2 dB, supply 2.8–5.0 V, operating -40 to +85°C, size 49.5×49.5×16 mm, 3m cable\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-NEO-M8N-28dB-External-GNSS-BDS-GPS-Positioning_08494521-9327-40db-9dab-371678b3de8e.png?v=1783480350\"\u003e\n\u003c\/div\u003e","brand":"Beitian","offers":[{"title":"BT-35A(Magnet)","offer_id":53332476428512,"sku":"BT-35A-1","price":32.82,"currency_code":"USD","in_stock":true},{"title":"BT-35B(Glue)","offer_id":53332476461280,"sku":"BT-35A-2","price":32.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/BT-35A-E.png?v=1783477009","url":"https:\/\/rcdrone.top\/hi\/products\/beitian-bt-35a-antenna","provider":"RCDrone","version":"1.0","type":"link"}