Basic NEC with Broadcast Applications

 

 

 

5.1 Modeling Impedance Loads

Modeling lumped R-L-C impedance loads on one or more segments of a wire is accomplished using the LD command. Series and parallel circuits can be generated in addition to a finite wire conductivity. To review the syntax of the LD command, see the description in Appendix A.

Here is a typical broadcast application:

More often than not, the LD command is used by setting I1 = 0 to add a series impedance to a wire such ...