{"product_id":"rfi-cd51-68-50-450-520mhz-ground-independent-mopole-mbc-base-flexible-pvc-radiator","title":"RFI CD51-68-50 450-520MHz Ground Independent Mopole - MBC Base (Flexible PVC Radiator)","description":"\u003ch2\u003eUHF Ground Independent Mopole Antenna, 450–520MHz, 4dB Gain\u003c\/h2\u003e\n\u003cp\u003eThe RFI CD51-68-50 is a heavy-duty UHF mobile antenna designed for professional two-way radio systems operating across the 450–520MHz frequency range. \u003cstrong\u003eMBC base included, cable and connector sold separately.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe CD51-68-50 is a Ground Independent Mopole antenna delivering a genuine 4dB improvement over a standard 1\/4-wave whip, thanks to its patented feed design. It's built for commercial fleets, emergency services, utilities, mining, transport, agriculture, and industrial applications that need dependable UHF communications.\u003c\/p\u003e\n\u003cp\u003eIts flexible PVC radiator over a copper element resists impacts, vibration, and harsh weather, and because it doesn't rely on the vehicle body as a ground plane, it can be mounted in alternative positions like bull bars, mirror brackets, roof racks, canopies, and toolboxes where a traditional roof-centre antenna won't work.\u003c\/p\u003e\n\u003cp\u003eNeed a different band or mount type? This antenna is also part of a wider CD51 series, see \"Other Options in This Series\" below.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4dB gain over a standard 1\/4-wave whip\u003c\/strong\u003e means stronger signal for fleet vehicles that can't fit a full-size roof-mount antenna.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Independent Mopole design\u003c\/strong\u003e means reliable performance from bull bars, mirror brackets, canopies, and other non-standard mounting positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible PVC radiator over a copper element\u003c\/strong\u003e means it resists knocks, vibration, and low-clearance impacts without permanent damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty MBC mounting base included\u003c\/strong\u003e means a secure, proven installation standard trusted by fleet operators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField-tuneable with supplied chart\u003c\/strong\u003e means you can dial in the best VSWR for your exact operating frequency within the band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for analogue and digital radio systems\u003c\/strong\u003e means one antenna works across mixed fleets running older and newer radios.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial fleet, transport, and logistics vehicles\u003c\/li\u003e\n\u003cli\u003eEmergency services and local government\u003c\/li\u003e\n\u003cli\u003eUtilities, mining, and civil construction\u003c\/li\u003e\n\u003cli\u003eAgriculture and forestry equipment\u003c\/li\u003e\n\u003cli\u003eVehicles needing alternative mounting positions (bull bars, canopies, toolboxes, fibreglass panels)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x RFI CD51-68-50 Mopole antenna with MBC base\u003c\/li\u003e\n\u003cli\u003eTuning chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot included:\u003c\/strong\u003e coaxial cable and connector, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComplete Your Setup\u003c\/h3\u003e\n\u003cp\u003eThis antenna's MBC base doesn't include a cable or connector. Talk to us and we'll help you choose the right cable length and connector for your installation.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eRFI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eCD51-68-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eFrequency range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e450–520MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e4dB over a 1\/4 wave whip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eTuned bandwidth \/ VSWR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e13MHz at \u0026lt;1.5:1, field-tuneable using supplied chart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003ePower handling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e50W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eWhip length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e360mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eWhip material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eCopper braid element in flexible PVC\/nylon tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eMBC base, included (no cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eSpec sheet PDF linked below covers the CD50\/CD51-68-5x installation family; please confirm with us if you need CD51-specific (PVC whip) diagrams.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDownload the installation sheet (PDF)\u003c\/p\u003e\n\n\u003ch3\u003eOther Options in This Series\u003c\/h3\u003e\n\u003cp\u003eThe CD51 series covers other bands and mount types. See CD51-68-70 (450-520MHz, threaded stud mount) for the same band with a different mount, or CD51-65-70 and CD51-65-53 for the 380-440MHz band. These are different configurations or bands, not direct substitutes, so pick the one that matches your licensed frequency.\u003c\/p\u003e\n\n\u003ch3\u003eVideo\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eNo product video currently available for this model.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Mobile Systems Limited?\u003c\/h3\u003e\n\u003cp\u003eMobile Systems Limited supplies professional mobile radio systems and antenna solutions throughout New Zealand from our base in Mt Maunganui, Bay of Plenty. Our team provides:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFleet communication system design\u003c\/li\u003e\n\u003cli\u003eVehicle antenna selection\u003c\/li\u003e\n\u003cli\u003eProfessional installations\u003c\/li\u003e\n\u003cli\u003eAntenna testing and VSWR optimisation\u003c\/li\u003e\n\u003cli\u003eOngoing servicing and technical support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're fitting out one vehicle or an entire fleet, we'll help you select the right antenna solution for dependable long-term performance.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat frequencies does the CD51-68-50 support?\u003c\/h4\u003e\n\u003cp\u003eThe antenna operates across the 450–520MHz UHF frequency range, making it suitable for many licensed analogue and digital radio systems.\u003c\/p\u003e\n\u003ch4\u003eWhat is Ground Independent Mopole technology?\u003c\/h4\u003e\n\u003cp\u003eGround Independent Mopole technology enables the antenna to perform efficiently without relying on the vehicle body as a ground plane, giving installers greater flexibility when selecting a mounting location.\u003c\/p\u003e\n\u003ch4\u003eWhat are the benefits of the flexible PVC radiator?\u003c\/h4\u003e\n\u003cp\u003eThe flexible PVC radiator provides excellent resistance to impacts, vibration, UV exposure, and harsh weather, making it ideal for commercial, industrial, and off-road vehicles.\u003c\/p\u003e\n\u003ch4\u003eDoes the antenna include a mounting base?\u003c\/h4\u003e\n\u003cp\u003eYes. The CD51-68-50 is supplied with a heavy-duty MBC mounting base, but cable and connector are sold separately.\u003c\/p\u003e\n\u003ch4\u003eIs the antenna suitable for digital radio systems?\u003c\/h4\u003e\n\u003cp\u003eYes. It is compatible with both analogue and digital UHF radio systems operating within the 450–520MHz frequency range.\u003c\/p\u003e\n\u003ch4\u003eCan Mobile Systems Limited install this antenna?\u003c\/h4\u003e\n\u003cp\u003eYes. We supply, install, test, tune, and support RFI antenna systems and complete two-way radio solutions for commercial, industrial, and government customers throughout New Zealand.\u003c\/p\u003e","brand":"RFI","offers":[{"title":"Default Title","offer_id":48442100744418,"sku":"qsn1789683070810","price":62.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0815\/2478\/5378\/files\/rfi-cd51-68-50-450-520mhz-ground-independent-mopole---mbc-base-flexible-pvc-radi_1.png?v=1789683103","url":"https:\/\/ropecoilwear.shop\/products\/rfi-cd51-68-50-450-520mhz-ground-independent-mopole-mbc-base-flexible-pvc-radiator","provider":"My Store","version":"1.0","type":"link"}