Wireless Network 300m away

"Omni" didn't stand for omni-power nor omni-range, it's omni-directional with 30mW of maximum transmit power.

8dBi omnis transmited that same max 30mW, distributing out 8dB more in particular intended direction and less in others, while true omnis are isotropic and transmited evenly in all direction. There's no free lunch.

Typical 12dBi omni's RF field maps tended toward toroidal shapes, but if you actually get a toric mapping, it is more romboidal.

ok, my plan was for the 2nd AP at site B to be able to service the entire set of buildings in this horseshoe pattern. The AP would be located at the "top" of the horseshoe. If i were to place the AP in the window of this central building, and seeing that each other building has line of sight view to that window..... can i get away with desktop directional antennas for computers wishing to connect to the AP.... and not bother with a bigger omni antenna for the AP?

Anyone, anyone?.... this is the last item I need to be clear on before doing the ordering.

ok guys, still working on this.......
I seem to be having very poor luck with signal range while attempting to place the AP hooked to the Cantenna indoors in a window covered by large grid metal grating (yes i know its bad)...... according to my wifi finder the signal drops alltogether after about 30ft from the window..... yikes. I've also tried it with a panel antenna, and with the regular omni..... seems to be poor range regardless. I'll have to take the setup fully outdoors to see what happens i guess. Hopefully its the metal thats knocking the heck out of the signal....if not, i am going to be very disappointed in the DWL-800AP's.

Are signal amplifiers worth the money? What would they do on the D-Link that has an output of 32mW? There is one by Hawking (HSB1) http://www.hawkingtech.com/prodSpec.php?ProdID=224 that gets mixed reviews, and although it says it can boost output 100-500mW, i think it just gives higher quality within the same range, and not necessarily greater distance.

This is proving to be much tougher than i first anticipated............