{"product_id":"beitian-bt-236-antenna","title":"Beitian BT-236 RTK GNSS Quadrifilar Helix Antenna SMA-J RG178 Fixed-Hole for Surveying Robots","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eBeitian BT-236 is an RTK GNSS antenna with a quadrifilar helix (four-star) full-frequency design. It is designed for small RTK equipment and supports use with a variety of receivers in surveying\/mapping and robotics applications where compact size, light weight, and positioning accuracy are required.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFull-frequency GNSS support: BDS B1\/B2\/B3\/B2a, GPS L1\/L2\/L5, GLONASS G1\/G2\/G3, GALILEO E1\/E6\/E5\u003c\/li\u003e\n\u003cli\u003eRight-hand circular polarization (RHCP)\u003c\/li\u003e\n\u003cli\u003e360° horizontal coverage angle\u003c\/li\u003e\n\u003cli\u003eLow VSWR: ≤ 1.5 (antenna), output VSWR ≤ 2\u003c\/li\u003e\n\u003cli\u003eFixed-hole mounting with 4 × M3 mounting holes (mechanical drawing)\u003c\/li\u003e\n\u003cli\u003eSMA-J connector with RG178 cable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cb\u003eAntenna Specifications\u003c\/b\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency range\u003c\/td\u003e\n\u003ctd\u003eBDS B1\/B2\/B3\/B2a; GPS L1\/L2\/L5; GLONASS G1\/G2\/G3; GALILEO E1\/E6\/E5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e2 dBi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna AR\u003c\/td\u003e\n\u003ctd\u003e≤ 3 dB\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\u003ctr\u003e\n\u003ctd\u003eVSWR\u003c\/td\u003e\n\u003ctd\u003e≤ 1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePolarization\u003c\/td\u003e\n\u003ctd\u003eRight-hand circular polarization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePort impedance\u003c\/td\u003e\n\u003ctd\u003e50 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase center error\u003c\/td\u003e\n\u003ctd\u003e± 3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cb\u003eElectrical Specifications\u003c\/b\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLNA gain\u003c\/td\u003e\n\u003ctd\u003e33 ± 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\u003eOperating voltage\u003c\/td\u003e\n\u003ctd\u003e3.3-12.0 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating current\u003c\/td\u003e\n\u003ctd\u003e≤ 50 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput VSWR\u003c\/td\u003e\n\u003ctd\u003e≤ 2\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\u003eDifferential transmission delay\u003c\/td\u003e\n\u003ctd\u003e≤ 5 ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cb\u003eStructural Characteristics\u003c\/b\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector type\u003c\/td\u003e\n\u003ctd\u003eSMA-J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna size\u003c\/td\u003e\n\u003ctd\u003eΦ56.9 × 21 mm\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 (mechanical drawing)\u003c\/td\u003e\n\u003ctd\u003e200 ± 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna weight\u003c\/td\u003e\n\u003ctd\u003e82 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting (mechanical drawing)\u003c\/td\u003e\n\u003ctd\u003e4 × M3; outer size 50.5 ± 0.3 mm; inner dimension 43.1 ± 0.1 mm; Φ56.9 ± 0.3 mm; height 21 ± 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cb\u003eWorking Environment\u003c\/b\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-55 to +85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSurveying and mapping RTK equipment\u003c\/li\u003e\n\u003cli\u003eUnmanned vehicles\u003c\/li\u003e\n\u003cli\u003eHandheld terminal equipment\u003c\/li\u003e\n\u003cli\u003eRobotics platforms requiring multi-constellation GNSS reception\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor integration or connector\/cable selection questions before ordering, contact support@rcdrone.top or visit https:\/\/rcdrone.top\/.\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Beitian BT-236 RTK GNSS quadrifilar helix antenna mechanical drawing with dimensions, SMA-J and 4×M3 mount\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Beitian-BT-236-RTK-GNSS-Quadrifilar-Helix-Antenna.webp?v=1783584412\"\u003e\u003cp\u003eCompact housing with 4 × M3 fixed-hole mounting and an SMA-J connector on a 200 mm RG178 pigtail for easy integration.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Beitian","offers":[{"title":"BT-236","offer_id":53341082910944,"sku":"Beitian_RTK_G_a9897b-1","price":68.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/BT-236-E.png?v=1783582647","url":"https:\/\/rcdrone.top\/nl\/products\/beitian-bt-236-antenna","provider":"RCDrone","version":"1.0","type":"link"}