The UHF Long Range Antenna for RDH 16 Digital Radio, designed specifically for UHF RDH-16 Digital Handheld Radio, increases transmission and reception range by up to 30%. Installation is straightforward, requiring an unscrewing of the existing antenna and threading this one on. Standing at a mere 6.5in, this dedicated UHF antenna supports a frequency of 400mHz-480mHz. For a VHF version, VHF-DUCKY-RDH is needed.