High Quality Content by WIKIPEDIA articles! A passive radio link deflection, or passive repeater is a plant for the implementation of a microwave link, in which because of an obstacle in the signal path no direct line of sight microwave link is possible. It has the advantage over the installation of a microwave radio relay station with active components, that at the place of the installation no electricity supply is required and that no further frequencies are needed (at repeater stations with active components usually different frequencies for reception and transmission are used, in order to prevent feedbacks). The corresponding disadvantage is that the returned signal is significantly weaker.

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