go to Wireless/Wireless Settimgs/Channel Width/by default is in AUTO change it to 20Mhz, if that one does not solve your issue then the one on top Mode by default its 11bgn mixed change it to 11bg...

But why these devices doesn't work in Bridge mode they do, but as i have answered Throughput and everything works half, meaning you will loose 50% performance Bridge mode is a old platform, but if...

next one will be 192.168.1.4 and so on, the answer to your Q is yes you are right

The setup I am testing internally do not test performance in a room, just set the them, 5210 radios are ment for outdoor, leave a full power and as far apart as room lets you, you will find how to...

With 7210 as Client no way Operation Mode as Client Router yes. but in your scenario useless cause your drawing is on the roof connect any TL router by lan cable from 7210 to a 740 router converted...

No bridge mode No WPA or WEP Use WPA/WPA2 PERSONAL it's defaults