An antenna that focuses signals so that they come and go in a particular pattern, with a particularly strong signal in one direction. These are used especially for wireless bridges between two locations/buildings.
Some examples are the
horns (CardboardHorn),
DirectionalPatch (sometimes referred to as panel antennas),
SlottedWaveguide may be either omnidirectional or unidirectional, depending on the design.
See also: OmniDirectionalAntenna, AntennaHowTo
An alternative to LongShots with high gain antennae is asynchronous access via a MobileMailServer
