Without the antenna actually disconnections took place every few seconds, do not notice the the normal surfing / POP3 email on. However, the display of Internet video streams was not possible. In the Youtube Stream broke off after about 2 seconds and was not / never resumed. One could only refreshen the side and hope the connection may time holds 4 seconds. Conclusion: Youtube was not possible.
This has changed completely with the antenna! The stream is interrupted only rarely. I can view some streams completely without fault.
But it is important the placement and orientation of this antenna. So it is very entscheident what items are placed in the immediate vicinity of the antenna. My cactus I had to banish it from the windowsill :-)
You have the antenna always 20 to 30 seconds to enter to determine whether the location or the orientation is good or bad.
Conclusion: The acquisition is worth it!