The most popular wire-wound CB antenna in the world. This is the original Firestik design, and proven performer since 1975. The "KW" antennas are compatible with autos, trucks, vans, motorcycles and ATV's in single antenna configuration when metallic ground plane is available. Or, they may be used in dual (co-phased) configuration on any vehicle made from any type of material. Like all CB antennas, the "KW" antennas require fine-tuning (SWR) in their final mounting location. The loading coil on all "KW" antennas is easily accessable for precise SWR adjustments. All "KW" antennas exceed the requirements of any CB radio, new or old. Aside from the hi-performance loading coil that maximizes the transmit/receive functions of your CB, these top-loaded antennas will also receive the NOAA emergency weather alert and national weather broadcasts for radios with those features.