The Tune Trapper is a hidden AM/FM/HD/WB antenna that works! Mount it anywhere (in almost any vehicle, boat, RV or motorcycle) in any position, in steel or fiberglass; it's flexible, can be bent 10 to 20 degrees, and works awesome inside H-D fairings! The Tune Trapper is a full half-wave helical dipole antenna, hand tuned to resonance with special instruments and requires no ground. It uses 95% braided shield cable for virtual elimination of EMI electrical noise caused by engines, fans, wipers, etc. These hand-tuned antennas mount behind your fairing and require no power. Your radio has all the preamp it needs built in, it's just looking for a properly tuned antenna to make it rock.