Telescopic 1m VHF Antenna Handheld VHFs with BNC Connector. Marine VHF 1.0m telescopic antenna for portable radios. The telescopic whip extends to 935mm making the antenna a fully operating half wave. Designed to screw directly to your handheld radio. Specs: Frequency: VHF 156-162 MHz, Radome: Telescopic, Ferrule: Nylon, Antenna Type: Half Wave, Gain: 3dBi, Marine Gain: 6dB, Typical VSWR at 156.8 MHz: 1.2:1, DC Meter Reader: Open Circuit, Height: 1m.