If you took the proven features and performance of the famous KW" series antennas and added a unique tuning mechanism to the top, you would own the equivalent of a Firestik II, "FS" Series antenna. Aside from the ease of tuning, the patented design broadens the antennas bandwidth to keep SWR lower over more channels.
"Application/Usage:
VehicleApplication/Usage: Radio
CommunicationLimited Warranty: 5 Year