gain whip antenna.boost the range of your two way radio Features:High quality and high VHF/UHF with frequency never interrupt frequency Great alternative and very durable Magnet mount and antenna combination. Gain Max power 70W SWERVE X Impedance ohm Connector Type SL16/PL259 Band Dual Band VHF/UHF Frequency | 144MHz/430MHz Antenna Length 18.