622.489 : 654.9 in this article we calculate the linear parameters of a iong line formed by an urtinsulated conductor lying on the floor of a mine working. If we wish to make practical use of this system, we must know how to estimate the feasible range of transmission of a radio signal for workings in various different rocks. We can do this with the aid of the theory of long lines provided that we know the parameters per unit length of the system R0, L0, Co, and Go. For a long line, these parameters can b…
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