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BELL SYSTEM TECHNICAL JOURNAL 



FREQUENCY -KILOCYCLES 



Fig. 20— Characteristic impedance, Z = R — jx; temperature 90°F.— 19 gauge pairs 



Characteristics of Toll Cable Above 100 Kc. 



The preceding discussion has dealt largely with the characteristics of toll 

 cables up to 100 kc. However, some measurements have been made 



