What's that square on the roof?

The square thing on the roof is the signal base station of the communication company, and the communication signal is used to connect the forwarding coverage.

The signal tower is a kind of wireless signal transmitter set by network operators such as China Mobile, China Unicom and China Telecom. It looks like a tower, so it is called a signal tower. It is also a form of public radio station, which refers to a radio transceiver station that transmits information through a mobile phone terminal through a communication switching center in a certain radio coverage area.

Since the popularity of wireless cities, signal towers have been used as the signal transmission base point of urban WIFI.

Canton Tower

Guang Zhouta is located in the center of Guangzhou, at the intersection of the new central axis of the city and the Pearl River landscape axis, across the river from Haixinsha Island and Pearl River New Town in the CBD area of Guangzhou in 2 1 century. It is the tallest tower in China and the third tallest tower in the world.

On September 28th, 20 10, Guangzhou Chengtou Group held a press conference and officially announced that Guangzhou New TV Tower was named Guang Zhouta, the tallest tower in China, with an overall height of 600 meters and the thinnest part of the "small waist" on the 66th floor. 10 to 1, Guang Zhouta will officially open ticket sales to receive tourists.

The above content comes from Baidu Encyclopedia-Signal Tower