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 Two Way Radio MA-F Dual Band VHF/UHF Reviser Guofeng Ken wood PULING Gain RT21V/RT5R Max power ow SWERVE less than 1.5 Impedance ohm Connector Type MA-F Band Dual Band VHF/UHF Frequency Antenna Length Weight 144MHz/430MHz 14.