Low-Power-Consumption Microwave Radio Relay System

An economical microwave radio relay system in 2-GHz and 4-GHz bands for developing areas can be realized by the combination of extremely low-power-consumption radio equipment and static power supply equipment, such as thermoelectric generators, solar cells, etc. High reliability of this system minimizes the number of maintenance personnel and of routine inspection tours to economize the system operation cost. The system in the 4-GHz band is capable of transmitting up to 1800 telephone channels, yet it features outstanding economy in television or telephone channel transmission up to 960 channels, especially in remote areas. System description, comparison with a conventional system, and a brief radio equipment description are presented here.