I've set up two wifi hot spots outside of my house at distance lesser than 20 meters as i don't get any ISP signal inside my house. But the problem is now i get very weak signal in my house because of nature of walls. I'm afraid of buying any repeaters as they reduce the speed by two.
So i've thought of building two simple omni-directional WiFi antennas myself (such as biquad or helical) and connect them to each other by a cable, and put one at outdoor and other at indoor. But i'm not sure if this would work out, so i need your suggestions please..
Additional Infromation: I got this idea from following instructable, but it is not for WiFi, and not simple as i think http://www.instructables.com/id/DIY-2G3G4G-Wireless-Cell-Phone-Signal-Booster/