by shahmaran » Sat Jul 11, 2009 12:13 pm
Most routers are roughly the same regarding signal strength, all pretty crap when it comes to concrete to be honest.
Best thing to do is find a decent router that has removable antennas and then buy a longer antenna, they are very cheap. I managed to find a D-Link that has removable antennas, it was very cheap too and does the job just fine.
This can almost triple your signal strength but concrete is still a big issue.
So another option is to use several compatible modems or access points as multipliers but that's an expensive option.
Also stay away from WEP encryption as it is very easy to crack when you are giving strong signal to a large area, use WPA, or if you must use WEP due to compatibility issues than use MAC filtering.