{"product_id":"horizon1090-active-1090-mhz-ads-b-antenna-with-integrated-saw-filter","title":"Horizon1090 — Active 1090 MHz ADS-B Antenna with Integrated SAW Filter","description":"\u003cstyle\u003e\n\/* RF.Guru Shopify product page styles (standard) *\/\nh2, h3, h4 { font-weight: bold; margin-top: 1.2em; }\nul { margin-left: 1.2em; margin-bottom: 0.8em; }\nul li { margin-bottom: 0.4em; }\np { margin-bottom: 0.8em; }\n\n\/* Inline note *\/\n.inline-note { color: #8a8a8a; font-style: italic; display:block; margin-top:0.3em; }\n\n\/* Info box (yellow variant) *\/\n.cert-box,\n.handmade-box {\n  background: #fff8e5;\n  border: 1px solid #f0d78c;\n  border-radius: 6px;\n  padding: 0.8em;\n  margin: 1.2em 0;\n}\n.cert-box b,\n.handmade-box b { color:#b26d00; }\n\n\/* Specs table *\/\n.specs-table { width: 100%; border-collapse: collapse; margin: 1em 0; }\n.specs-table th, .specs-table td { border: 1px solid #ddd; padding: 6px 8px; text-align: left; }\n.specs-table thead th { background: #f7f7f7; }\n\n\/* Responsive video *\/\n.video-container {\n  position: relative;\n  width: 100%;\n  aspect-ratio: 16 \/ 9;\n  border-radius: 12px;\n  overflow: hidden;\n  margin: 1em 0;\n}\n.video-container iframe {\n  width: 100%;\n  height: 100%;\n  border: 0;\n}\n\n\/* Mini-FAQ *\/\n.mini-faq {\n  background: #f9f9f9;\n  border: 1px solid #ddd;\n  border-radius: 6px;\n  padding: 1em;\n  margin-top: 2em;\n}\n.mini-faq h3 { margin-top: 0; }\n.mini-faq ul { list-style: none; padding-left: 0; margin: 0; }\n.mini-faq li { margin-bottom: 0.6em; }\n.mini-faq li b { margin-right: .3em; }\n\n\/* Blue technical highlight box *\/\n.tech-box {\n  background: #eef6fb;\n  border: 1px solid #c6d9e8;\n  border-radius: 6px;\n  padding: 1em;\n  margin-top: 1.5em;\n  margin-bottom: 1.5em;\n  font-size: 0.95em;\n  line-height: 1.5em;\n}\n\u003c\/style\u003e\n\n\u003c!-- HANDMADE + CE BOXES --\u003e\n\u003cdiv class=\"handmade-box\"\u003e\n\u003cb\u003eHandmade in Belgium\u003c\/b\u003e — Our antenna enclosures are handmade in Belgium, and each unit is assembled and tested by hand. Fulfilment times may vary with order volume. Please allow \u003cb\u003e1–4 weeks\u003c\/b\u003e for assembly and shipping.\n\u003c\/div\u003e\n\n\u003cdiv class=\"cert-box\"\u003e\n\u003cb\u003eCE Certified\u003c\/b\u003e — Fully tested for safety, quality, and compliance.\n\u003c\/div\u003e\n\n\u003c!-- INTRO --\u003e\n\n\u003cp\u003e\nThe \u003cb\u003eHorizon1090\u003c\/b\u003e is a purpose-built \u003cb\u003eactive 1090 MHz ADS-B receiving antenna\u003c\/b\u003e built around a custom \u003cb\u003ePCB-based shifted vertical dipole\u003c\/b\u003e. Unlike a generic whip, the geometry is designed to favor \u003cb\u003elower elevation angles\u003c\/b\u003e, helping your receiver detect aircraft earlier and keep them longer near the horizon.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe antenna combines the radiator, a \u003cb\u003ebuilt-in SAW band-pass filter\u003c\/b\u003e, and an \u003cb\u003eintegrated low-noise amplifier\u003c\/b\u003e into one compact outdoor assembly. It is powered through the coax with a \u003cb\u003ebias-t\u003c\/b\u003e and supports both \u003cb\u003e3.3 V and 5 V operation\u003c\/b\u003e, which makes it a practical match for many SDR receivers and ADS-B setups, including common \u003cb\u003eAirspy\u003c\/b\u003e and \u003cb\u003eRTL-SDR\u003c\/b\u003e dongles with bias-t capability.\n\u003c\/p\u003e\n\n\u003c!-- TECH BOX --\u003e\n\u003cdiv class=\"tech-box\"\u003e\n\u003ch3\u003e\u003cb\u003eWhy this design works\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eShifted vertical dipole geometry\u003c\/b\u003e helps bring the effective reception angle down toward the horizon, where long-range ADS-B targets first appear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated SAW filter\u003c\/b\u003e removes much of the unwanted out-of-band energy before it can desensitize the active front end.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBuilt-in LNA\u003c\/b\u003e adds about \u003cb\u003e+15 dB\u003c\/b\u003e of gain directly at the antenna, before coax loss and receiver noise can bury weak aircraft replies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOut-of-band rejection\u003c\/b\u003e of the SAW filter is typically around \u003cb\u003e25–30 dB\u003c\/b\u003e from \u003cb\u003eDC to ~970 MHz\u003c\/b\u003e and again from \u003cb\u003e~1150 to 1300 MHz\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBias-t powered over coax\u003c\/b\u003e keeps installation simple and avoids separate local power wiring at the antenna.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003c!-- SPECS --\u003e\n\u003ch3\u003e\u003cb\u003eSpecs at a Glance\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eADS-B \/ Mode S \/ 1090ES reception\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e1090 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna Type\u003c\/td\u003e\n\u003ctd\u003ePCB-based shifted vertical dipole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltering\u003c\/td\u003e\n\u003ctd\u003eIntegrated SAW band-pass filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOut-of-Band Rejection\u003c\/td\u003e\n\u003ctd\u003eApprox. 25–30 dB from DC to ~970 MHz and from ~1150 to 1300 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive Gain\u003c\/td\u003e\n\u003ctd\u003eApprox. +15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowering\u003c\/td\u003e\n\u003ctd\u003eBias-t over coax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBias-t Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3 V and 5 V supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eBottom-mounted N connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Impedance\u003c\/td\u003e\n\u003ctd\u003e50 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Material\u003c\/td\u003e\n\u003ctd\u003ePA12-HP Nylon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse\u003c\/td\u003e\n\u003ctd\u003eReceive only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cb\u003eIncluded with the Product\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eComplete tested Horizon1090 antenna\u003c\/b\u003e with integrated SAW filter and LNA\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eHandmade PA12-HP Nylon enclosure\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBottom-mounted N connector\u003c\/b\u003e for direct outdoor coax connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLocking antenna foot\u003c\/b\u003e for simple mounting on the recommended tube size\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- VIDEO --\u003e\n\u003cdiv class=\"video-container\"\u003e\n  \u003ciframe title=\"Horizon1090 YouTube video\" src=\"https:\/\/www.youtube.com\/embed\/FcjYSymwj-Q?rel=0\u0026amp;vq=hd1080\u0026amp;autoplay=1\u0026amp;mute=1\u0026amp;playsinline=1\u0026amp;controls=1\"\u003e\n  \u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCustom PCB shifted vertical dipole\u003c\/b\u003e optimized for low-angle ADS-B reception\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated SAW filter\u003c\/b\u003e for a cleaner 1090 MHz front end\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApprox. +15 dB active gain\u003c\/b\u003e from the built-in low-noise amplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3.3 V \/ 5 V bias-t compatible\u003c\/b\u003e for easy use with many SDR receivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBottom-mounted N connector\u003c\/b\u003e for robust installation and low-loss outdoor cabling\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHandmade enclosure\u003c\/b\u003e and individually tested assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eReal-World Performance\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\nIn comparative testing by \u003cb\u003eRF.Guru\u003c\/b\u003e and \u003cb\u003eON5SEL\u003c\/b\u003e, Horizon1090 detected \u003cb\u003emore aircraft\u003c\/b\u003e than commercial comparison antennas used in the same environment. The improvement is not just extra gain: the lowered reception angle, cleaner filtered front end, and low-noise amplification translate into \u003cb\u003emore planes detected\u003c\/b\u003e and \u003cb\u003emore usable decodes\u003c\/b\u003e, which is what really matters in ADS-B reception.\n\u003cbr\u003e\u003cspan class=\"inline-note\"\u003eActual results depend on installation height, local RF noise, coax quality, and receiver type.\u003c\/span\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eMounting \u0026amp; Installation\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eRecommended mast\/tube:\u003c\/b\u003e \u003cb\u003ePVC tube 40 mm diameter × 3.0 mm SN4\u003c\/b\u003e. Any other tube with the same diameter can also be used.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLocking foot:\u003c\/b\u003e there is a screw in the antenna foot that locks the antenna in place by pressing firmly against the tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNon-conductive supports are best:\u003c\/b\u003e PVC or fiberglass poles help raise the antenna without disturbing the reception pattern like a conductive mast can.\u003c\/li\u003e\n\u003cli\u003eAt our test site, the antenna was mounted at around \u003cb\u003e1.25 m above ground\u003c\/b\u003e and still delivered excellent results.\u003c\/li\u003e\n\u003cli\u003eThis is a \u003cb\u003ereceive-only active antenna\u003c\/b\u003e and must \u003cb\u003enever\u003c\/b\u003e be connected to a transmitter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"tech-box\"\u003e\n\u003ch3\u003e\u003cb\u003eEnclosure Material \u0026amp; UV Protection\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\nThe enclosure is made from \u003cb\u003ePA12-HP Nylon\u003c\/b\u003e, a tough engineering material well suited to outdoor RF hardware. For long-term outdoor exposure, it is best to protect the enclosure with a \u003cb\u003enon-conductive coating\u003c\/b\u003e such as \u003cb\u003ePlasti Dip\u003c\/b\u003e. This adds a practical UV barrier and helps preserve the surface over time, while avoiding conductive paints or metallic coatings that can interfere with antenna performance.\n\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- MINI FAQ --\u003e\n\u003cdiv class=\"mini-faq\"\u003e\n\u003ch3\u003e\u003cb\u003eMini-FAQ\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDoes it need a separate power cable?\u003c\/b\u003e — No. The antenna is powered over the coax via \u003cb\u003ebias-t\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhich voltages are supported?\u003c\/b\u003e — It supports both \u003cb\u003e3.3 V and 5 V\u003c\/b\u003e bias-t operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWill it work with common SDR receivers?\u003c\/b\u003e — Yes, it is designed for many \u003cb\u003ebias-t capable SDRs\u003c\/b\u003e, including popular Airspy and RTL-SDR dongles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat tube fits best?\u003c\/b\u003e — The recommended fit is a \u003cb\u003e40 mm diameter PVC tube with 3.0 mm wall thickness, SN4\u003c\/b\u003e, or any other tube with the same diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHow is it locked onto the mast?\u003c\/b\u003e — A screw in the antenna foot presses against the tube and secures the antenna in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCan I coat the enclosure for outdoor use?\u003c\/b\u003e — Yes. A \u003cb\u003enon-conductive coating\u003c\/b\u003e such as \u003cb\u003ePlasti Dip\u003c\/b\u003e is recommended for improved UV protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCan I transmit into it?\u003c\/b\u003e — No. Horizon1090 is a \u003cb\u003ereceive-only\u003c\/b\u003e active antenna for 1090 MHz ADS-B reception.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"RF Guru","offers":[{"title":"Default Title","offer_id":52822988357974,"sku":"2026-P-003","price":89.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4402\/4764\/files\/1090Horizon-1.25M-blur.webp?v=1773490389","url":"https:\/\/shop.rf.guru\/products\/horizon1090-active-1090-mhz-ads-b-antenna-with-integrated-saw-filter","provider":"RF Guru","version":"1.0","type":"link"}