One hertz is one cycle per second, meaning repeating cycle as an event. For example, hertz is applied physics measuring the number of times for a second wave (either acoustic or electromagnetic) is repeated or can be applied, among other uses, to ocean waves that reach the Beach vibrations per second or a solid. The quantity that measures the frequency hertz is called,in this regard, the inverse of the period. One hertz is an oscillation frequency of suffering a particle over a period of one second.

ng-Lee used in Europe for terrestrial receivers. It requires a little more attention to the correct installation of the cable male with Belling-Lee type and should be attentive to the quality of the connector and match the size of connector cable.