Hi @Steve, it does. The antenne are generally used in a free-space setting for coverage purposes only. Watch this clip http://www.youtube.com/watch?v=BzxuPfR97jY . Many RF guys on this list know this but will translate what the screen show. The video shows 2 signal outputs, the one the left is a standard outdoor AP while the right is a a very strong RF signal on another AP. But watch the spike on the right AP on the high power signal at 0:03 seconds ( the spike is on the left side of the wave ), that is strongly suggests harmonics in action. In this case, the carrier is now carrying noise within it.

Rgds.

On Tue, Feb 21, 2012 at 12:39 PM, Steve Muchai <smuchai@gmail.com> wrote:

On Tue, Feb 21, 2012 at 12:07 PM, aki <aki275@gmail.com> wrote:
> @Wash, use the 12-27db loss as a indicator of what outputs in gain you need,
> and keeping in mind a lot of RF power hitting a concrete block will produce
> harmonics of frequencies that will either cancel out the carrier or distort

Does this vary depending on the type of antenna used (ie omni vs. directional)?

BR
S