484 THE BELL SYSTEM TECHNICAL JOURNAL, MARCH 1956 



1.0 

 0.9 

 0.8 

 0.7 



0.6 



0.5 



0.4 

 0.3 



0.2 



0.004 



0.003 



0.002 



0.001 



10 



15 



20 25 



S = *equivalent"number of paths 



30 



35 



Fig. 38 — Comparison of Ri and R2 losses under various load and trunk con- 

 ditions. 



