More on Amazon.com : http://www.amazon.com/gp/product/B00DHHOZBI?tag=purrfectcatdi-20 <br /> <br />Outdoor Omnidirectional FM Antenna <br /> <br />Round dipole design <br />360 pick up pattern <br />Multiple units may be stacked vertically for increased signal gain <br />Heavy duty construction with rugged mast clamp and associated hardware <br />Frequency range 875 108Mhz Maximum gain 4dB Impedance 75ohm female F connector Diameter 1775
