A passive repeater or passive radio link deflection, is a reflective or sometimes refractive panel or other object that assists in closing a radio or microwave link, in places where an obstacle in the signal path blocks any direct, line of sight communication. Compared to a microwave radio relay station with active components, a passive repeater is far simpler and needs little maintenance and no on-site electric power.
A passive repeater or passive radio link deflection, is a reflective or sometimes refractive panel or other object that assists in closing a radio or microwave link, in places where an obstacle in the signal path blocks any direct, line of sight communication. Compared to a microwave radio relay station with active components, a passive repeater is far simpler and needs little maintenance and no on-site electric power.
Source: Wikipedia "Passive repeater" · CC BY-SA 4.0
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