On 27 Jul 2006 12:15:00 -0700, "Queeg" wrote:

A second use will be to receive from my home wi-fi access point when at
the marina 1/4 mile from my house. Do I need to use one of these
antennas to emit from home, and one to receive on the boat?

If you are line-of-sight with your house with no obstructions, you
might be OK but I doubt it. Best bet is to use an external antenna
with a high power access point at your house also.