How do get the maximum range from a scanner?!

Question: hi i would like to know what antenna would be best to use on a portable handheld scanner to get the most distance from it.
thanks

Answers: hi i would like to know what antenna would be best to use on a portable handheld scanner to get the most distance from it.
thanks

The bigger the better

The answer content post by the user, if contains the copyright content please contact us, we will immediately remove it.