Four Element Directional Outdoor Fm Antenna New Condition Specifications: Nominal range: 60 - 70 miles. Frequency range: 87.5 - 108Mhz. Forward gain: 7dB max. Front to back ratio: 15dB max. Impedance: 75ohm, female F connector. Horizontal beam width: 65. Width (widest element): 64". Boom length: 66"