AM/FM & CB Radio 3-Way Antenna Splitter Use Your Existing vehicle AM/FM Radio Antenna for Both the Stereo & CB Radio! Great for "stealth" Applications, no Additional CB antenna needed! Has Fine Tuning adjustment for CB . Use when "Stealth & Cosmetic" considerations are more important than maximum CB range. Hard To Find Item, Use Your Existing Vehicle's AM/FM Antenna, For Both Radio & CB !