Accepts mast diameters from 1.81 in. Includes bracket and three 20.5 in. The item "TRAM 1480 Amateur Dual-Band Base Antenna" is in sale since Friday, January 8, 2021.This item is in the category "Consumer Electronics\Radio Communication\Antennas\Ham, Amateur Radio Antennas". The seller is "deffaudio" and is located in Erie, Pennsylvania. This item can be shipped to United States.