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HelicalAntenna
Helical Antenna are directional, but not as much as ParabolicAntenna.
They are almost always HomeBrew.
Jason Hecker's design is one that is also covered at seattlewireless.net
They are usually about 18dbi gain.
When using a Helical antenna make sure that the other end of the link also uses one or you will lose 3dbi of gain. Also make sure it's wound in the same direction as yours, or you will lose all signal.
Version 3 (current) modified Mon, 26 Jul 2021 12:49:28 +0000 by graybeard
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