{"product_id":"robofusion-a5800-5-8ghz-fpv-antenna-3dbi-omni-dipole-sma-178mm-for-vt5804-vt5805-video-transmitters","title":"Robofusion A5800 5.8GHz FPV Antenna — 3dBi Omni Dipole, SMA, 178mm, for VT5804 \/ VT5805 Video Transmitters","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRobofusion A5800\u003c\/strong\u003e is a 5.8GHz \u003cstrong\u003eomnidirectional dipole antenna\u003c\/strong\u003e purpose-matched to the \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual\"\u003eVT5804\u003c\/a\u003e and \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual\"\u003eVT5805\u003c\/a\u003e analog video transmitters. Built with \u003cstrong\u003eLDS (Laser Direct Structuring)\u003c\/strong\u003e — the antenna element is laser-drawn onto a molded carrier, so every unit is tuned identically — and protected by a semi-transparent radome. Lab-verified performance: up to \u003cstrong\u003e3.56dBi gain\u003c\/strong\u003e, radiation efficiency of \u003cstrong\u003e60–84%\u003c\/strong\u003e across the band, and \u003cstrong\u003eVSWR of 1.25–1.87\u003c\/strong\u003e — a clean, well-matched load that protects your high-power VTX output stage.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue lab data, not marketing numbers\u003c\/strong\u003e — anechoic-chamber measured: 3.56dBi peak gain, \u0026gt;60% efficiency at every point from 5350–5900MHz, VSWR under 2.0 across the design band\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOmnidirectional dipole pattern\u003c\/strong\u003e — even signal in all horizontal directions; ideal aircraft-side antenna that keeps video steady through turns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLDS construction\u003c\/strong\u003e — laser-formed radiator for unit-to-unit consistency; no hand-tuned wire whips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemi-transparent protective radome\u003c\/strong\u003e — impact and weather protection, −30°C to +85°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible RG141 lead with SMA connector\u003c\/strong\u003e — 178mm overall length routes cleanly on fixed-wing and multirotor airframes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna type\u003c\/td\u003e\n\u003ctd\u003eDipole, omnidirectional (LDS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign frequency range\u003c\/td\u003e\n\u003ctd\u003e5350–5850MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak gain\u003c\/td\u003e\n\u003ctd\u003e3.0dBi nominal (3.56dBi measured)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRadiation efficiency\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;60% across the band (max 83.6%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVSWR\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2.0 (measured 1.25–1.87)\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\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eSMA (male pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e178 ± 1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRadome diameter\u003c\/td\u003e\n\u003ctd\u003eØ18.27mm, semi-transparent housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003eRG141, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e−30°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eConnects to the \u003cstrong\u003eVT5804 (2.5W)\u003c\/strong\u003e and \u003cstrong\u003eVT5805 (4W)\u003c\/strong\u003e video transmitter modules via the MMCX extension feeder included with each module. The 5350–5850MHz design band covers the LOW band, Raceband, FS\/IRC, and A\/B bands — everything North American pilots normally fly. Full lab test data, radiation patterns, and mounting guidance: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/a5800-fpv-antenna\"\u003eA5800 Antenna Guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eDocumentation \u0026amp; Guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/a5800-fpv-antenna\"\u003eA5800 Specifications \u0026amp; Guide\u003c\/a\u003e — measured gain\/efficiency tables, radiation patterns, how to mount it\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual\"\u003eVT5804 2.5W VTX User Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual\"\u003eVT5805 4W VTX User Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackage List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Robofusion A5800 5.8GHz antenna\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Support\u003c\/h2\u003e\n\u003cp\u003eQuestions before or after purchase? Email \u003ca href=\"mailto:info@robofusion.net\"\u003einfo@robofusion.net\u003c\/a\u003e — answered by the Robofusion engineering team.\u003c\/p\u003e","brand":"Robofusion","offers":[{"title":"Default Title","offer_id":54073276662079,"sku":"A5800","price":9.9,"currency_code":"USD","in_stock":true}],"url":"https:\/\/robofusion.ca\/products\/robofusion-a5800-5-8ghz-fpv-antenna-3dbi-omni-dipole-sma-178mm-for-vt5804-vt5805-video-transmitters","provider":"RoboFusion","version":"1.0","type":"link"}