UAYESOKVHF Marine Antenna Stainless Steel Whip Low Profile Boat Antenna for Cobra Icom Uniden Standard Horizon Marine Radio VHF Ham Radio W/16.4ft RG-58 coaxial Cable,L-Mount Bracket

VSWR on the marine band was 1:6, absolutely worthless. This was measured with a vector impedance meter. Resonance was around 800MHz with an VSWR of 1:3. I haven't tried a resonant ground plane on the mount yet or characterized the antenna beyond the attempt to use it during the event I attended.