Crosstalk in coaxial cables — Analysis based on short-circuited and open tertiaries

The problem considered herein is that of estimating, from measurements on short lengths of coaxial cable, the crosstalk to be expected in long lengths of the same cable. The method developed, which is particularly applicable to cases in which the effect of tertiary circuits on the crosstalk is large, is based on measurements of crosstalk in a short length, with the tertiaries first short-circuited and then open. The application of this method to the cable described in the companion paper by Messrs. Booth and Odarenko gave crosstalk values in good agreement with their experimental results.