{"title":"Analog Video Transmitter(VTX)","description":"\u003cp\u003eHigh-power 5.8GHz analog FPV video transmitters with TBS SmartAudio — the 2.5W VT5804, 4W VT5805, and the lab-tested A5800 omni antenna. Complete manuals and test reports at \u003ca href=\"https:\/\/docs.robofusion.net\/category\/video-transmitters-fpv\"\u003edocs.robofusion.net\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"robofusion-vt5804-5-8ghz-2-5w-long-range-analog-fpv-video-transmitter-48ch-6-bands-2s-8s-7-36v-tbs-smartaudio-30-5-30-5mm-stack-mount-mmcx","title":"Robofusion VT5804 5.8GHz 2.5W FPV Video Transmitter Module — 48CH Analog VTX, TBS SmartAudio, 25–2500mW, 30.5×30.5 Stack Mount","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRobofusion VT5804\u003c\/strong\u003e is a \u003cstrong\u003e5.8GHz analog video transmitter (VTX) module\u003c\/strong\u003e for long-range and freestyle FPV. It delivers up to \u003cstrong\u003e2.5W (2500mW)\u003c\/strong\u003e across four switchable power levels, covers \u003cstrong\u003e48 channels on 6 bands\u003c\/strong\u003e (including Raceband), and accepts a wide \u003cstrong\u003e7–36V input\u003c\/strong\u003e that runs directly from 2S–8S packs — no external BEC required. The \u003cstrong\u003e30.5×30.5mm bolt pattern\u003c\/strong\u003e drops straight onto standard full-size flight-controller stacks, and band, channel, and power are tunable from your Betaflight\/iNav OSD over \u003cstrong\u003eTBS SmartAudio\u003c\/strong\u003e or with the onboard button.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 power levels\u003c\/strong\u003e — 25 \/ 600 \/ 1200 \/ 2500mW: bench-safe 25mW for setup, 2.5W for extreme long-range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48 channels, 6 bands\u003c\/strong\u003e (A \/ B \/ E \/ FS-IRC \/ RACE \/ LOW) — compatible with every standard analog 5.8GHz receiver and goggles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTBS SmartAudio\u003c\/strong\u003e — change band, channel, and power from your flight controller OSD or radio (Betaflight, iNav, ArduPilot)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide 7–36V input\u003c\/strong\u003e — runs directly from 2S–8S; regulated 5V output powers your FPV camera\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum heatsink chassis\u003c\/strong\u003e — integrated cooling fins maintain output stability at 1.2W and 2.5W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-profile 7.2mm, only 11g\u003c\/strong\u003e — the lightweight option in the series (the \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual#vt5804-or-vt5805--which-one\"\u003efan-cooled 4W VT5805\u003c\/a\u003e is the max-range option)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 30.5×30.5mm mounting\u003c\/strong\u003e, MMCX antenna connector with RP-SMA extension included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency band\u003c\/td\u003e\n\u003ctd\u003e5.8GHz (5362–5945MHz, 48 channels \/ 6 bands)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmit power\u003c\/td\u003e\n\u003ctd\u003e25 \/ 600 \/ 1200 \/ 2500mW (4 levels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVideo format\u003c\/td\u003e\n\u003ctd\u003eCVBS (analog composite) input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput voltage\u003c\/td\u003e\n\u003ctd\u003e7–36V (2S–8S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax current\u003c\/td\u003e\n\u003ctd\u003e850mA @ 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera power output\u003c\/td\u003e\n\u003ctd\u003e5V regulated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration protocol\u003c\/td\u003e\n\u003ctd\u003eTBS SmartAudio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna connector\u003c\/td\u003e\n\u003ctd\u003eMMCX (RP-SMA extension feeder included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions \/ mounting\u003c\/td\u003e\n\u003ctd\u003e38 × 36.5 × 7.2mm \/ 30.5 × 30.5mm pattern\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e11g (excluding antenna)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eGetting Started\u003c\/h2\u003e\n\u003cp\u003eWiring takes minutes with the single 6-pin connector: battery or PDB to \u003cstrong\u003eVIN\/GND\u003c\/strong\u003e, camera video to \u003cstrong\u003eVIDEO\u003c\/strong\u003e, camera power from the regulated \u003cstrong\u003e5V VOUT\u003c\/strong\u003e, and (optionally) a flight-controller UART TX to \u003cstrong\u003eRX_OSD\u003c\/strong\u003e for SmartAudio control. Full pinout and diagram: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual#wiring\"\u003eVT5804 Wiring Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e⚠ Never power on without an antenna attached\u003c\/strong\u003e — reflected RF energy can permanently damage the output stage within seconds.\u003c\/p\u003e\n\n\u003ch2\u003eConfiguration\u003c\/h2\u003e\n\u003cp\u003eSet channel, band, and power with the onboard button and LED indicators — see the \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual#button-configuration\"\u003ebutton configuration guide\u003c\/a\u003e and \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual#bands-channels-and-frequency-table\"\u003e48-channel frequency table\u003c\/a\u003e. Or wire SmartAudio and control it from Betaflight, iNav, or ArduPilot: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual#smartaudio--configure-from-your-flight-controller\"\u003eSmartAudio setup\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\/vt5804-user-manual\"\u003eVT5804 User Manual\u003c\/a\u003e — full specifications, wiring, frequency table, LED reference, FAQ\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual#transmit-power-and-the-law\"\u003eTransmit power \u0026amp; licensing\u003c\/a\u003e — operation above 25mW generally requires an amateur (HAM) radio license in the US\/Canada\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual\"\u003eVT5805 4W User Manual\u003c\/a\u003e — the higher-power sibling, if you need maximum range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho Is This For?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-range pilots\u003c\/strong\u003e pushing analog video links to multi-kilometer distances where 1W is no longer enough\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreestyle builders\u003c\/strong\u003e flying in obstacle-dense environments where RF penetration matters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6S and 8S build owners\u003c\/strong\u003e — the 7–36V input means no extra step-down regulator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepair or upgrade swaps\u003c\/strong\u003e — the 30.5×30.5mm bolt pattern fits directly onto most full-size FC stacks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackage List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Robofusion VT5804 video transmitter module\u003c\/li\u003e\n\u003cli\u003e1 × MMCX-to-RP-SMA extension feeder cable (87mm)\u003c\/li\u003e\n\u003cli\u003e2 × Flight controller signal\/power cables (100mm each)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote: antenna not included.\u003c\/strong\u003e The VTX must never be powered on without a 5.8GHz antenna connected to the MMCX port — running a high-power VTX without an antenna will permanently damage the output stage. Please source a compatible antenna before first use.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this VTX work with Betaflight OSD power control?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. It speaks TBS SmartAudio over a single UART TX pad. Once enabled in Betaflight or iNav, you can switch band, channel, and power from the OSD without landing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I power it directly from a 6S or 8S battery?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — 7–36V covers 2S (≈7.4V) through 8S (≈33.6V fully charged) directly. For 8S HV packs that may exceed 36V at full charge, use a standard 8S pack or add a step-down regulator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will it fit a standard FC stack?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — the 30.5×30.5mm pattern matches common full-size FC\/ESC stacks. It does not natively fit 20×20mm micro stacks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the LOW band legal in my country?\u003c\/strong\u003e\u003cbr\u003e\nA: The LOW band (5362–5621MHz) overlaps frequencies not authorized for unlicensed operation in many regions, including the US (FCC) and Canada (ISED). Compliance is the operator's responsibility — North American pilots typically operate on Raceband, FS\/IRC, or specific A\/B\/E channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it have a built-in microphone?\u003c\/strong\u003e\u003cbr\u003e\nA: No — the VT5804 transmits CVBS video only. For audio, use an FPV camera with an integrated microphone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it support IRC Tramp?\u003c\/strong\u003e\u003cbr\u003e\nA: No — TBS SmartAudio only, which is natively supported by all current Betaflight and iNav firmware.\u003c\/p\u003e\n\n\u003ch2\u003eCompliance \u0026amp; Legal\u003c\/h2\u003e\n\u003cp\u003e5.8GHz transmitters operating above 25mW require an amateur radio license or equivalent authorization in many jurisdictions, including the United States (FCC) and Canada (ISED). Operators are responsible for ensuring frequency, power, and operating conditions comply with all applicable local regulations. This product is sold for radio-controlled hobby, professional drone development, and other lawful applications.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Support\u003c\/h2\u003e\n\u003cp\u003eQuestions before or after purchase? Email \u003ca href=\"mailto:support@robofusion.net\"\u003esupport@robofusion.net\u003c\/a\u003e — answered by the Robofusion engineering team.\u003c\/p\u003e","brand":"RoboFusion","offers":[{"title":"Module Only","offer_id":52967260356927,"sku":"VT5804","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Module + A5800 Antenna","offer_id":54073307791679,"sku":"VT5804-A5800","price":49.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5241\/8879\/files\/PXL_20260713_140750189_9ff3d920-17a8-4721-9918-3071b310cbf7.jpg?v=1783954432"},{"product_id":"robofusion-vt5805-5-8ghz-4w-fpv-video-transmitter-module-48ch-analog-vtx-tbs-smartaudio-25-4000mw","title":"Robofusion VT5805 5.8GHz 4W FPV Video Transmitter Module — 48CH Analog VTX, TBS SmartAudio, 25–4000mW","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRobofusion VT5805\u003c\/strong\u003e is a high-power \u003cstrong\u003e5.8GHz analog video transmitter (VTX) module\u003c\/strong\u003e with selectable output up to \u003cstrong\u003e4W (4000mW)\u003c\/strong\u003e — built for genuine long-range FPV. It transmits a standard \u003cstrong\u003eCVBS analog video signal\u003c\/strong\u003e on any of \u003cstrong\u003e48 channels across 6 bands\u003c\/strong\u003e (including Raceband), supports remote configuration over \u003cstrong\u003eTBS SmartAudio\u003c\/strong\u003e, and pairs a machined aluminum heatsink case with a \u003cstrong\u003ebuilt-in cooling fan\u003c\/strong\u003e to sustain full power. A wide \u003cstrong\u003e7–36V input (2S–8S)\u003c\/strong\u003e and a regulated \u003cstrong\u003e5V camera output\u003c\/strong\u003e make it a complete, drop-in video link for long-range fixed-wing aircraft, mapping platforms, and industrial drones.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 power levels\u003c\/strong\u003e — 25 \/ 1000 \/ 2000 \/ 4000mW: bench-safe 25mW for setup, 4W for maximum range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48 channels, 6 bands\u003c\/strong\u003e (A \/ B \/ E \/ FS-IRC \/ RACE \/ LOW) — compatible with every standard analog 5.8GHz receiver and goggles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTBS SmartAudio\u003c\/strong\u003e — change band, channel, and power from your flight controller OSD or radio (Betaflight, iNav, ArduPilot)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive cooling\u003c\/strong\u003e — aluminum heatsink plus built-in fan sustains 4W output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide 7–36V input\u003c\/strong\u003e — runs directly from 2S–8S; regulated 5V output powers your camera\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-button configuration\u003c\/strong\u003e — set everything in the field with LED band\/channel readout, no computer needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 30.5×30.5mm mounting\u003c\/strong\u003e, MMCX antenna connector, only 16.9g\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency band\u003c\/td\u003e\n\u003ctd\u003e5.8GHz (5362–5945MHz, 48 channels \/ 6 bands)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmit power\u003c\/td\u003e\n\u003ctd\u003e25 \/ 1000 \/ 2000 \/ 4000mW (4 levels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVideo format\u003c\/td\u003e\n\u003ctd\u003eCVBS (analog composite) input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput voltage\u003c\/td\u003e\n\u003ctd\u003e7–36V (2S–8S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax current\u003c\/td\u003e\n\u003ctd\u003e1100mA @ 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera power output\u003c\/td\u003e\n\u003ctd\u003e5V regulated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eAluminum heatsink + built-in fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration protocol\u003c\/td\u003e\n\u003ctd\u003eTBS SmartAudio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna connector\u003c\/td\u003e\n\u003ctd\u003eMMCX (RPSMA extension feeder included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions \/ mounting\u003c\/td\u003e\n\u003ctd\u003e38 × 36.5 × 13.5mm \/ 30.5 × 30.5mm pattern\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e16.9g (excluding antenna)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eGetting Started\u003c\/h2\u003e\n\u003cp\u003eWiring takes minutes with the single 6-pin connector: battery or PDB to \u003cstrong\u003eVIN\/GND\u003c\/strong\u003e, camera video to \u003cstrong\u003eVIDEO\u003c\/strong\u003e, camera power from the regulated \u003cstrong\u003e5V VOUT\u003c\/strong\u003e, and (optionally) a flight-controller UART TX to \u003cstrong\u003eRX_OSD\u003c\/strong\u003e for SmartAudio control. Full pinout and diagram: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual#wiring\"\u003eVT5805 Wiring Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e⚠ Never power on without an antenna attached\u003c\/strong\u003e — at 4W, reflected RF energy can permanently damage the output stage within seconds.\u003c\/p\u003e\n\n\u003ch2\u003eConfiguration\u003c\/h2\u003e\n\u003cp\u003eSet channel, band, and power with the onboard button and LED indicators — see the \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual#button-configuration\"\u003ebutton configuration guide\u003c\/a\u003e and \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual#bands-channels-and-frequency-table\"\u003e48-channel frequency table\u003c\/a\u003e. Or wire SmartAudio and control it from Betaflight, iNav, or ArduPilot: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual#smartaudio--configure-from-your-flight-controller\"\u003eSmartAudio setup\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\/vt5805-user-manual\"\u003eVT5805 User Manual\u003c\/a\u003e — full specifications, wiring, frequency table, LED reference, FAQ\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual#transmit-power-and-the-law\"\u003eTransmit power \u0026amp; licensing\u003c\/a\u003e — operation above 25mW generally requires an amateur (HAM) radio license in the US\/Canada\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.robofusion.net\/telemetry-radios\/ardupilot-telemetry-setup\"\u003eArduPilot Telemetry Setup\u003c\/a\u003e — pair your video link with a Robofusion telemetry radio\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackage List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × VT5805 video transmitter module\u003c\/li\u003e\n\u003cli\u003e1 × 6-pin ribbon cable\u003c\/li\u003e\n\u003cli\u003e1 × MMCX-to-RPSMA extension feeder cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote: antenna not included.\u003c\/strong\u003e At 4W, antenna quality matters — pair the VT5805 with a well-matched 5.8GHz antenna rated for high power.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Support\u003c\/h2\u003e\n\u003cp\u003eQuestions before or after purchase? Email \u003ca href=\"mailto:support@robofusion.net\"\u003esupport@robofusion.net\u003c\/a\u003e — answered by the Robofusion engineering team.\u003c\/p\u003e","brand":"RoboFusion","offers":[{"title":"Module Only","offer_id":54072087478591,"sku":"VT5805","price":59.0,"currency_code":"USD","in_stock":true},{"title":"Module + A5800 Antenna","offer_id":54073307824447,"sku":"VT5805-A5800","price":68.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5241\/8879\/files\/vt5805-product.png?v=1783691697"},{"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 (2-Pack) — 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. Unlike most FPV antennas sold on marketing claims, the A5800 ships with a \u003cstrong\u003ecomplete anechoic-chamber lab report\u003c\/strong\u003e: measured VSWR, gain, efficiency, and full radiation patterns, all published in our knowledge base.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSold as a 2-pack\u003c\/strong\u003e — the antenna is the first thing to take a hit in any rough landing, and a matched spare in your field bag means the session doesn't end there.\u003c\/p\u003e\n\n\u003ch2\u003eLab-Measured Performance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e up to 3.56dBi measured (3.0dBi nominal) — the right figure for an aircraft-side omni: even coverage in every direction, no deep overhead nulls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRadiation efficiency:\u003c\/strong\u003e 60–84% at every point from 5350–5900MHz — cheap FPV whips typically sit at 30–50%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVSWR:\u003c\/strong\u003e 1.25–1.87 across the design band, well under the 2.0 spec limit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eMeasured VSWR\u003c\/th\u003e\n\u003cth\u003ePower reflected back into your VTX\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5350MHz\u003c\/td\u003e\n\u003ctd\u003e1.77\u003c\/td\u003e\n\u003ctd\u003e~7.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5550MHz\u003c\/td\u003e\n\u003ctd\u003e1.26\u003c\/td\u003e\n\u003ctd\u003e~1.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5750MHz\u003c\/td\u003e\n\u003ctd\u003e1.25\u003c\/td\u003e\n\u003ctd\u003e~1.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5850MHz\u003c\/td\u003e\n\u003ctd\u003e1.87\u003c\/td\u003e\n\u003ctd\u003e~9.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eWhy VSWR matters: any mismatch reflects transmit power straight back into the VTX output stage. At 2.5–4W that reflected power becomes heat inside your transmitter — a well-matched antenna like this one is cheap insurance for a high-power module. Full test data, charts, and radiation patterns: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/a5800-fpv-antenna\"\u003eA5800 Lab Test Report\u003c\/a\u003e.\u003c\/p\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), 8.0mm hex\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\u003c\/td\u003e\n\u003ctd\u003eSemi-transparent housing, Ø18.27mm head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003eRG141, black, heat-shrink strain relief\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\u003eMounting Tip\u003c\/h2\u003e\n\u003cp\u003eA dipole radiates a \"donut\" pattern with nulls off its tip. Mount the A5800 \u003cstrong\u003evertically\u003c\/strong\u003e (radome up or down) so the strong equator of the pattern sweeps the horizon — video stays steady as the aircraft turns. Never point the antenna tip at your ground station. The RG141 lead is stiff-but-formable: bend it gently to route the antenna and it holds position. Full guidance with measured pattern plots: \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/a5800-fpv-antenna#radiation-patterns--where-the-signal-actually-goes\"\u003eradiation patterns explained\u003c\/a\u003e.\u003c\/p\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. (The three highest E-band channels, 5905–5945MHz, sit above the design band.)\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 Full Lab Test Report \u0026amp; Guide\u003c\/a\u003e — VSWR\/gain\/efficiency charts, radiation patterns, antenna basics in plain English\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/a5800-fpv-antenna#vswr--how-well-the-antenna-is-matched\"\u003eWhat VSWR means for your VTX\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5804-user-manual\"\u003eVT5804 2.5W VTX User Manual\u003c\/a\u003e · \u003ca href=\"https:\/\/docs.robofusion.net\/video-transmitters\/vt5805-user-manual\"\u003eVT5805 4W VTX User Manual\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackage List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2 × Robofusion A5800 5.8GHz antenna (individually bagged)\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:support@robofusion.net\"\u003esupport@robofusion.net\u003c\/a\u003e — answered by the Robofusion engineering team.\u003c\/p\u003e","brand":"RoboFusion","offers":[{"title":"Default Title","offer_id":54073276662079,"sku":"A5800-2PK","price":19.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5241\/8879\/files\/Image_Jul_13_2026_12_31_24_PM.png?v=1783954920"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/5241\/8879\/collections\/Screenshot_2026-05-13_150427.jpg?v=1778693795","url":"https:\/\/robofusion.net\/collections\/analog-video-transmittervtx.oembed","provider":"RoboFusion","version":"1.0","type":"link"}