Experimental research on the behavior of passive repeaters

The behavior of passive repeaters in microwave radio links has been focused by means of a series of experimental tests. Some of the measurements were concerned with the determination of quantities which characterize the behavior of the repeater alone and in connection with the whole radio link. Some other measurements were planned to investigate closely the behavior of the mirror and the anomalies which have been found. Emphasis has been given to the influence of propagation and the effects of the ground surrounding the mirror. Much of the aim has been to separate these effects. Finally some conclusions are drawn and criteria for the installation of such repeaters are pointed out.