{"product_id":"distribucomm-commdisk-5-magnetic-antenna-adhesive-disc-for-aluminum-fiberglass","title":"DistribuComm COMMDISK 5\" Magnetic Antenna Adhesive Disc for Aluminum \u0026 Fiberglass","description":"\u003cstyle\u003e\n\/* --- Verified Fleetwood Digital PDP CSS --- *\/\n.fd-feature-list { list-style: none; padding-left: 0; margin: 20px 0; }\n.fd-feature-list li { display: flex; align-items: flex-start; margin-bottom: 16px; line-height: 1.5; }\n.fd-feature-list .icon { font-size: 20px; margin-right: 12px; width: 24px; text-align: center; flex-shrink: 0; margin-top: 3px; }\n.fd-feature-list .fd-feature-title { display: block; font-weight: bold; font-size: 1.05em; }\n.fd-feature-list .fd-feature-description { display: block; font-size: 1em; }\n\n.specs-table { width: 100%; border-collapse: collapse; margin-top: 20px; }\n.specs-table th, .specs-table td { border: 1px solid #ddd; padding: 10px; text-align: left; }\n.specs-table th { background-color: #f9f9f9; font-weight: bold; width: 40%; }\n.specs-table tr:nth-child(even) { background-color: #fdfdfd; }\n\n.fd-notice-block { background-color: #f8f8f8; border: 1px solid #ddd; border-radius: 8px; padding: 16px; margin: 20px 0; }\n.fd-notice-title { font-weight: bold; font-size: 1.1em; color: #333; margin-top: 0; }\n.fd-warning-notice { background-color: #fef2f2; border: 1px solid #ef4444; border-radius: 8px; padding: 16px; margin: 20px 0; }\n.fd-warning-title { font-weight: bold; font-size: 1.1em; color: #b91c1c; margin-top: 0; }\n\u003c\/style\u003e\n\u003cp style=\"font-size: 1.1em; line-height: 1.6;\"\u003eHow do you mount a magnetic base antenna to an aluminum truck cab, a fiberglass RV roof, or a composite canopy without drilling holes? The \u003cstrong\u003eDistribuComm COMMDISK 5\"\u003c\/strong\u003e is a specialized, black matte ferrous metal disc backed by automotive-grade 3M VHB extra-strong adhesive, engineered to create an instant, permanent magnetic anchor anywhere you need it.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 4px solid #2a6496;\" class=\"fd-notice-block\"\u003e\n\u003cp class=\"fd-notice-title\"\u003e🔍 How It Works: RF Grounding on Aluminum vs. Fiberglass\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 8px;\"\u003eThe COMMDISK provides a ferrous surface for your magnet to adhere to, but performance depends on the vehicle material beneath it:\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; line-height: 1.5;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum Bodies (e.g., Modern Ford F-150 \/ Super Duty):\u003c\/strong\u003e While magnets will not stick to aluminum, aluminum remains an exceptional electrical conductor. At VHF and UHF frequencies, the thin 3M VHB layer acts as a dielectric insulator, enabling \u003cstrong\u003ecapacitive RF coupling\u003c\/strong\u003e. Your antenna magnetically mounts to the disc and capacitively couples directly through to the aluminum body panel, delivering a large, effective ground plane for low SWR.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass, Poly, or Wood Surfaces (RVs, Campers, Canopy Caps, Boats):\u003c\/strong\u003e Fiberglass is non-conductive and cannot create an RF ground plane. Because a 5-inch disc alone is electrically too small to act as a full 1\/4-wave counterpoise on VHF or CB frequencies, you should pair this mount with a \u003cstrong\u003eNo-Ground-Plane (NGP)\u003c\/strong\u003e or \u003cstrong\u003ehalf-wave (1\/2 wave) ground-independent antenna\u003c\/strong\u003e for optimal SWR performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fd-warning-notice\"\u003e\n\u003cp class=\"fd-warning-title\"\u003e⚠️ Maximum Antenna Length \u0026amp; Highway Safety Guidelines\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0;\"\u003eThis disc is engineered for compact, low-profile mobile antennas. Due to high-speed wind resistance and leverage shear forces, \u003cstrong\u003eantennas should not exceed 24 to 36 inches in length\u003c\/strong\u003e. Do not use full-size 5\/8-wave VHF whips, heavy center-loaded coils, or 102\" CB whips, as excessive leverage can tip the magnetic base off the plate at highway speeds. For best results, allow the 3M VHB tape to fully cure for 24 hours at room temperature prior to attaching the antenna or driving at highway speeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003ePerformance \u0026amp; Installation Highlights\u003c\/h3\u003e\n\u003cul class=\"fd-feature-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"icon\"\u003e🧲\u003c\/span\u003e\n\u003cdiv class=\"fd-feature-content\"\u003e\n\u003cspan class=\"fd-feature-title\"\u003eUniversal 5-Inch Magnetic Anchor\u003c\/span\u003e \u003cspan class=\"fd-feature-description\"\u003eLarge 5-inch diameter accommodates all standard 3-inch, 3.5-inch, and 5-inch commercial NMO or UHF magnetic bases.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"icon\"\u003e🚙\u003c\/span\u003e\n\u003cdiv class=\"fd-feature-content\"\u003e\n\u003cspan class=\"fd-feature-title\"\u003eEngineered for Aluminum Fleet Trucks\u003c\/span\u003e \u003cspan class=\"fd-feature-description\"\u003eSolves the magnetic mounting problem on modern aluminum-cab trucks without requiring permanent roof holes or third-brake-light brackets.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"icon\"\u003e🏷️\u003c\/span\u003e\n\u003cdiv class=\"fd-feature-content\"\u003e\n\u003cspan class=\"fd-feature-title\"\u003eAuthentic 3M VHB Bonding\u003c\/span\u003e \u003cspan class=\"fd-feature-description\"\u003ePre-applied 3M extra-strong industrial bonding tape withstands harsh Canadian winters, road salt, summer heat, and car washes.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"icon\"\u003e🎨\u003c\/span\u003e\n\u003cdiv class=\"fd-feature-content\"\u003e\n\u003cspan class=\"fd-feature-title\"\u003eLow-Profile Matte Black Finish\u003c\/span\u003e \u003cspan class=\"fd-feature-description\"\u003eDiscreet black matte coating blends smoothly onto roof skins, tonneau covers, and roof racks while resisting corrosion.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Model\u003c\/th\u003e\n\u003ctd\u003eDistribuComm COMMDISK (5\" Model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisc Diameter\u003c\/th\u003e\n\u003ctd\u003e5.0 Inches (approx. 127 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eFerrous Steel Alloy (Attracts Magnets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdhesive Type\u003c\/th\u003e\n\u003ctd\u003eGenuine 3M VHB High-Strength Automotive Tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eProtective Black Matte Powder Coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Surfaces\u003c\/th\u003e\n\u003ctd\u003eAluminum, Fiberglass, Composites, Glass, Plastics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Max Antenna\u003c\/th\u003e\n\u003ctd\u003eUp to 24\" - 36\" Low-Profile Whips (VHF \/ UHF \/  GMRS \/ 2' CB Antennas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Distribucomm","offers":[{"title":"Default Title","offer_id":55300510712087,"sku":"COMMDisk5","price":29.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1133\/9674\/files\/COMMDISK5-500x500-2.jpg?v=1790021372","url":"https:\/\/www.fleetwooddp.com\/fr\/products\/distribucomm-commdisk-5-magnetic-antenna-adhesive-disc-for-aluminum-fiberglass","provider":"Fleetwood Digital","version":"1.0","type":"link"}