VHF Antennas

By Don Casey

Revised by BoatUS editors in April 2012

As a general rule, mount a new antenna well clear of those already on your boat. For maximum range, mount a VHF antenna as high as possible

The range of SSB (Single Side Band) and ham radios is less dependent on antenna height, so these antennas can be mounted near deck level, but they should have a clear view of the sky, unobstructed by a top or rigging. Radar range and reception are improved by mounting the radar antenna as high as possible. Keep in mind that radar transmissions can damage eyes, so be sure this antenna is well above head level.  

A number of antenna mounts are readily available that will simplify your installation. Some are screwed to a horizontal or vertical surface; others simply clamp around a railing. A ratchet mount allows you to fold the antenna down to reduce the vessel's vertical clearance.