144/430MHz(2m/70cm), 300MHz band receiving only, Spring base structure, Gain:2.15dBi(144MHz), 5.5dBi(430MHz), Max. power rating:200W, Impedance:50ohms, VSWR: Less than 1.5:1, Length:1.00m, Weight:230g, Connector:M, Type:1/2wave radialless(144MHz), 2x5/8wave radialless(430MHz).