Hey SSTWAL Make sure your AP is in same subnet with root router It seems you are not using WDS .. Universal Repeater works wit WEP Encryption.. Try to set you root router with WEP Encryption and then...

Draw a diagram bro

Yes use indoor antenna settings and everything will be fine .. Its nearly hassle free . also use WDS mode . So repeaters can be used to set up where wireless signals go weak.

danymarc wrote if your router has WPA use CLIENT MODE here http://www.tp-link.com/en/article/?faqid=318 5210 will only give you internet via lan cable, you will have to add a router or AP to deliver...

If the line of Sight is clear .. you would have a good connection .. Narrower Fresnel Zone is better .. Remember for a reliable link 80 % of the fresnel zone should be clear !

the root router should have WEP encryption ..