Antennas
Directional antennas are used when communicating or targeting specific areas
and are not very effective for war-driving (only if you are actually
driving.) Directional antennas are also the type of antennas that
are most effective in long-range packet capturing because the power
and waves are tightly focused in one direction.
Multidirectional antennas are similar to directional antennas in the sense the both use highly concentrated and focused antennas for their transceivers. In most cases, multidirectional antennas are bidirectional ( front and back configuration) or quad-directional. Range is usually a bit smaller when compared to equally powered unidirectional antennas because the power must be used in more than one direction.
Omni directional antennas are what most think of when they think of antennas. An omni directional is the most effective in close city driving because it transmits and receives signals from all directions, thereby providing the largest angular range. Just for all you who learn in a pictorial manner, car antennas are omni directional.
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