Antenna Plus has worked very hard to be a top quality antenna manufacturer. They were the first company to design and patent low profile antennas that are now seen on most police and field service vehicles. The benefit of this form factor is a very long product life. These antennas survive car washes, being swept by tree branches, and all environmental conditions. Each of our communicating frequency antennas has an omnidirectional 3 dBi gain – ideal for mobile solutions. Built in the USA.