TEU-rHOSI: IK.IXSMISSK >.\ M. Il.\ I i.x.iscr. 

 \l fir<|ui'iii\ fi tlu'ii. 



V- 2'^ 



.in.l ,,t '... .V+l= ?y 



.ilsd at 1 1. Wi= V/fx 



..iulat/2. W:.= V'fi 

 Substituting alxixr 



>ul>tracliug, 



2(h-h) 



which is the distance in miles froni the sending end of the circuit to 

 the (X)int of impedance irregularity. The velocity of propogation 

 V is not exactly constant within the entire frequency range but does 

 not vary sufficiently to materially effect the accuracy of impedance 

 trouble locations bv this method. 



