High Quality Content by WIKIPEDIA articles! In satellite dish and antenna design parlance, a feedhorn is a horn antenna used to convey radio waves between the transceiver and the reflector. The feedhorn also selects the polarity of the waves to be received, Which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions. This can be either horizontal or vertical if the polarization is linear, or clockwise or counterclockwise if it is circular. Certain devices can also allow a feedhorn to accept both linear and circular, though these cause a slight insertion loss to all incoming signals

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