Base ant. 0,5-200 Mhz Length:approx.1.56mD303: 0.5 to 200MHz wide band receiving antenna Length:approx.1.56m - Weight:0.85kg Impedance:50ohms - Connector:M-J - Rated wind velocity:60m-sec. Mast diameter accepted:30mm to 62mm - Coaxial cable assembly(RG58U 10m with M-P connectors at both ends) is included.