What is the most common type of antenna for GMDSS VHF?

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Multiple Choice

What is the most common type of antenna for GMDSS VHF?

Explanation:
GMDSS VHF needs an antenna that provides omnidirectional coverage on all channels, so the usual choice is a vertical whip that is about a quarter-wavelength long. This type gives broad, even radiation in all directions and is simple and robust for maritime use. The options listed are directional or specialized antennas (dipole, Yagi, log-periodic), which are not the typical vessels’ GMDSS VHF antennas. Since a vertical whip is the standard and none of the listed options describe it, the answer is none of the above.

GMDSS VHF needs an antenna that provides omnidirectional coverage on all channels, so the usual choice is a vertical whip that is about a quarter-wavelength long. This type gives broad, even radiation in all directions and is simple and robust for maritime use. The options listed are directional or specialized antennas (dipole, Yagi, log-periodic), which are not the typical vessels’ GMDSS VHF antennas. Since a vertical whip is the standard and none of the listed options describe it, the answer is none of the above.

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