Antenna for Speedbox

Ordered for Speedbox B 593 T-Mobile me this antenna.
Unfortunately I had the problem that at the places where I wanted to set up the router, the reception was very poor (0bis1 bar), only at the kitchen window I managed up to 3 bar constant. But there he was not centrally located in the house .......
According to Internet forums, this router is very delicate with external antennas, after a long search I came to this.
The antenna has been recognized by the router immediately. The performance can be best thought so: I went the whole house from the router and a long cable, along with attic (where the best reception was). The same reception you with antenna. Now I could set up my antenna centrally in the house, then. The Asus RT56N as Acsesspoint, due to the higher power in the WLAN area and the antenna in the attic From 0-1 to 3-4 bar is not bad.
I, the antenna for the Huawei B593 only know about.