Abstract :
A study of the mode of propagation and changes in attenuation found along typical paths forms the basis for the evaluation of signal strength requirements in the design of communication systems employing tropospheric scatter. A chart is presented to enable performance and/or equipment parameters to be determined for a wide range of conditions. Particular reference is made to the requirements of f.m. multi channel telephony systems. The economics, present engineering limitations, and possible future trends in such systems are discussed.