The FG4-648-B, 'No ground plane" 4ft CB antenna kits were specifically designed to solve the problems associated with the lack of ground plane (counterpoise). This normally occurs on vehicles constructed of plastic, fiberglass, wood or aluminum. This includes, but is not limited to, motorhomes, boats, automobiles and 18-wheeler trucks. Ground plane problems typically show up in the form of high standing wave ratio (SWR) and poor performance. The isolated ground plane that is built into the FG4-648 kits can also eliminate problems on metal base vehicles that lack the sufficient ground plane for proper operation. This could be due to the size of available ground plane (ATV, bicycle, motorcycle, wheelchair, etc.), or because the operator chooses to mount the antenna in a location that is unable too properly take advantage of available ground plane. The versatility of these kits goes way beyond the normal expected uses of a typical mobile antenna kit. Apartment dwellers can mount them on a balcony railing.
The mount used in these kits is stainless steel, 3-way 90° angle mount. Mounting options are, 1) vertical bar, rail or post, or 2) horizontal bar, rail or post, and 3) flat vertical surface such as the side of the vehicle.