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4G Marine Antennas are designed to provide mobile phone and data coverage both when out to sea and when docked at the marina. These antennas have been manufactured to provide a high degree of weather survivability, with particular attention paid to UV and Salt-Spray resistances.

From an electrical design perspective, marine antennas need to provide consistent omnidirectional coverage while maintaining a vertical beam angle that tolerates the pitching and rolling of the marine vessel. Accordingly, antennas are typically collinear in construction and maintain an ideal Peak Gain between 5 and 7 dBi – too low wastes RF energy transmitted into the sky, and too high gain results in connection fluctuation in even modest swell.

Key to providing reliable mobile coverage and data speed when out at sea is raising the antenna as high as practical – this is a vital step to minimising the impact of earth curvature which ordinarily sees ground-level cellular communication start to suffer beyond 35 kilometres. As salt water is an excellent dielectric and not impacted by thermal fade, out-to-sea communication is often possible beyond 80 kilometres, depending of course on the location of coastal base stations.

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