I have a problem with a br1300 wifi system. I have it in a small window and just all the antenna is outdoor. When i have the aluminum piece behind the antenna, i have 5.5 Mb but if i don't put it behind the antenna, i have 54 Mb. I don't understand because we have a lot of that system. Maybe it 's because we have a small opening in the windows. I send you a small drawing to explain our problem.
Thanks for all,