H
HAAT (Height Above Average Terrain)
Level: 2
Definition: Measure of elevation calculated from the level of nearby surrounding terrain. This is used most often in antenna tower constructions and the formula for measurement is defined by the FCC.
Hacker
Level: 1
Definition: The term was originally used to describe a serious computer user. Now it is commonly used to refer to a person who gains unauthorized access to a computer system (usually from a remote location) and then tries to take control of some aspect of that computer, make changes to it, or access information contained on it. Many hackers try to break into computers purely for the challenge. Others (also known as “crackers”) do intentional harm and/or steal information. One of the most ...
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