512 



BELL SYSTEM TECHNICAL JOURNAL 



Network \a 



Rn = IqqR; Ln = - — - • 



IT 



Attenuation Linear Equation: 



Po- FQo =P{F - 1). 

 In physical solutions ^ (2o = Pa- 



a/Po + V^o 



1. at 



-\/Po - V(2o 



fli = 





2 



VPo + V(2o 



// = tan B 



VPo + V(2o 



2a,/ 



(1 - a,') - a,T 



