"Wilbur Hubbard" wrote in message
anews.com...
I have personal experience with respect to this topic. Putting a wi-fi
antenna at the masthead is the WRONG thing to do. You don't want it high
up. You want it low down. It gets better reception low. The signals seem
to be stronger low. Mount a good amplified antenna at deck level for the
best reception. No need to worry about long lengths of co-ax at all.

Here's a good antenna that works well and is priced reasonably.
http://www.radiolabs.com/products/wi...ne-antenna.php

Wilbur Hubbard


If your antenna is vertically polarized you could see a 3 dB increase in
signal if it placed over a conducting ground plane such as salt water. This
is explained by the theory of images, which in effect doubles the antenna
gain toward the horizon. If the antenna is horizontally polarized the
radiation pattern become directed more skyward and there is an associated
decrease in gain toward the horizon. Wilbur, you have a keen sense of
observation.