{"product_id":"rfi-cd28-37-73-138-163mhz-ground-independent-mopole-mbc-base-c-w-5m-cable","title":"RFI CD28-37-73 138-163MHz Ground Independent Mopole - MBC Base c\/w 5m Cable","description":"\u003ch2\u003eVHF Ground Independent Mopole Antenna, 138–163MHz, 3dB, MBC Base with 5m Cable\u003c\/h2\u003e\n\u003cp\u003eThe RFI CD28-37-73 is a broadband VHF Mopole antenna delivering a genuine 3dB improvement over a standard 1\/4-wave whip. \u003cstrong\u003eSupplied with MBC base and a 5m RG58C\/U cable already fitted.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe CD28-37-73 is a Ground Independent Mopole antenna covering 138–163MHz, ideal for \"alternative\" mounting positions such as gutter, mirror, or trunk mounts where a full ground plane isn't available.\u003c\/p\u003e\n\u003cp\u003eUsing a patented matching circuit, it's an end-fed dipole combining a durable thermoplastic housing with a flexible tapered stainless steel whip resistant to knocks and bends. Field testing shows a 3dB improvement in received signal level compared with a 1\/4-wave whip (pattern testing shows 1.5-2dB, equivalent to 1.5-2dBi), thanks to a lower radiation angle from the ground independent design.\u003c\/p\u003e\n\u003cp\u003eThis version comes pre-terminated with a 5m length of 8058 RG58C\/U cable, so there's no separate cable to source.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3dB gain Mopole design\u003c\/strong\u003e means stronger signal than a standard unity-gain whip, without needing a ground plane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround independent design\u003c\/strong\u003e means reliable performance from gutter, mirror, or trunk mounts, for vehicles where a full ground plane isn't practical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplied with 5m RG58C\/U cable\u003c\/strong\u003e means no separate cable to source, for a faster, simpler install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible tapered stainless steel whip\u003c\/strong\u003e means resistance to knocks and bends without permanent damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged thermoplastic housing\u003c\/strong\u003e means the matching circuit is virtually indestructible in daily fleet use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnique termination method\u003c\/strong\u003e means simplified installation and re-cabling in the field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial and government fleet vehicles\u003c\/li\u003e\n\u003cli\u003eEmergency service vehicles\u003c\/li\u003e\n\u003cli\u003eUtility and transport communications\u003c\/li\u003e\n\u003cli\u003eAlternative mounting positions where a full ground plane isn't available (gutter, mirror, trunk mounts)\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 CD28-37-73 Mopole antenna\u003c\/li\u003e\n\u003cli\u003eMBC base with 5m RG58C\/U cable fitted\u003c\/li\u003e\n\u003c\/ul\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;\"\u003eCD28-37-73\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;\"\u003e138–163MHz\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;\"\u003e3dB 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\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eFlexible tapered stainless steel whip, thermoplastic housing\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e\u003cstrong\u003eCable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e5m 8058 RG58C\/U, fitted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0026\/7357\/3939\/files\/RFI-CD28-Series-Specifications.pdf?v=1751767281\" target=\"_blank\" rel=\"noopener\"\u003eDownload the RFI CD28 Series specifications (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0026\/7357\/3939\/files\/RFI-CD28-37-5x-Installation-Sheet.pdf?v=1751767301\" target=\"_blank\" rel=\"noopener\"\u003eDownload the RFI CD28-37-5x installation sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eOther Options in This Series\u003c\/h3\u003e\n\u003cp\u003eNeed a different band or no cable? See \u003ca href=\"\/products\/rfi-138-163mhz-ground-independent\"\u003eCD28-37-50 (138-163MHz, no cable)\u003c\/a\u003e or \u003ca href=\"\/products\/rfi-138-163mhz-ground-independent\"\u003eCD28-37-51 (148-175MHz, no cable)\u003c\/a\u003e. These are different configurations or bands, not direct substitutes, so pick the one that matches your licensed frequency and cable needs.\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 two-way 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 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\u003eDoes this antenna include a cable?\u003c\/h4\u003e\n\u003cp\u003eYes, this version comes with a 5m RG58C\/U cable already fitted, saving you sourcing one separately.\u003c\/p\u003e\n\u003ch4\u003eDoes this need a large ground plane to work?\u003c\/h4\u003e\n\u003cp\u003eNo, the ground independent design means it performs reliably without a large metal ground plane, useful for alternative mounting positions like gutters, mirrors, and trunk mounts.\u003c\/p\u003e\n\u003ch4\u003eWhat is the benefit of the 3dB Mopole design?\u003c\/h4\u003e\n\u003cp\u003eField testing shows a 3dB improvement in received signal level over a standard 1\/4-wave whip, thanks to the antenna's lower radiation angle.\u003c\/p\u003e\n\u003ch4\u003eCan Mobile Systems Limited install this antenna?\u003c\/h4\u003e\n\u003cp\u003eYes. We supply, install, test, and support RFI antennas and complete two-way radio systems throughout New Zealand.\u003c\/p\u003e","brand":"RFI","offers":[{"title":"Default Title","offer_id":44665015173171,"sku":"CD28-37-73","price":142.6,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0026\/7357\/3939\/files\/RFI-CD28-37-50-Antenna.jpg?v=1785882277","url":"https:\/\/mobilesystems.nz\/products\/rfi-cd28-37-73-138-163mhz-ground-independent-mopole-mbc-base-c-w-5m-cable","provider":"MobileSystems","version":"1.0","type":"link"}