How Wireless Video Repeater Works

Basically, the wireless video repeater (or video booster) is used: (a) to extend the transmission distance of your existing transmitter further; (b) to bypass the obstacles in the transmission path which block the wireless signal reaching the final destination. (c) to change the direction of your existing transmitter's signal to another direction.

The following diagrams illustrate some of the applications of the repeater. In Diagram A below, AV signal in location A is to be sent to location B. A building is located in the transmission path between A and B thereby blocking the direct transmission of AV signal from A to B. Installing a repeater in a suitable place in the building in between can solve this problem.

In Diagram B below, AV signal in location A is to be sent to location B on the other side of the hill. Installing a repeater on the top of the hill can relay the AV signal to the final destination located on the other side of the hill.
In Diagram C below, AV signal in location A is to be sent to location B, which is completely out of sight from location A. By installing a repeater at location C, the AV signal can be redirected to location B despite there are buildings in between.