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Old 03-13-2021, 05:53 PM   #4
sledge
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City: Eastcoast
Vessel Model: American Tug 41
Join Date: Sep 2018
Posts: 254
Phil,
a 36-inch VHF is a half-wave end-fed monopole. They generally do not require a ground plane, however, there could be some type of transformer or matching circuit inside the base that is used to help match the very high impedance of the antenna to the low (50-ohm) impedance of the coax. I can't speak for shakespeare so I don't know how they do this matching.
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