Secondly, there are those that emit a similar signal, but in a beamed direction, so that when you are out of its beam influence, you will get no signal.
Okwe sibini kukho ezi zikhupha uphawu olufanayo kodwa ngendlela ekhanyayo ukwenzela ukuba xana ungekho phantsi kweempembelelo zokhanyo ungafumani luphawu