Field tests of microwave relaying equipment

MICROWAVE has often been considered as a possible solution to the communication problems associated with transfer-trip and similar type relaying; however, it has been felt by many engineers that the reliability of such a system in its present state of development is not adequate. Reports of sustained outages because of propagation fading, false operations resulting from noise, and lack of a reliable primary power source have served to discourage prospective users. It is now apparent from field tests and actual operating experiences that all of these limitations can be avoided by proper selection of the microwave frequency band and equipment.