A SOHO's connection to the internet is through an antenna that sends and receives a microwave signal to the ISP's antenna. There can be no obstacles on the direct path between the two antennae.

Line of sight wireless

Explanation:

Line of sight wireless are wireless which enable antenna to sends and receives a microwave signal to the ISP's antenna

By standing between the mounted antenna at client building so that the other side of the wireless connection you intend to create can be visible.

Line of Sight wireless also provide electro-magnetic radio waves that tends to be less affected by external forces leading to better connection reliability because all wireless networks excel only with true line of sight that is why it is always advisable that the antennas are mounted above the tree line, to ensure proper connections without obstacles between them since

Line of sight depend on having a clear line of sight between the antenna and the hotspot .

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.