NEC-LIST: NEC Average Gain

When source placement isn't to NEC-2 or NEC-4's liking, a way to
detect it is by using the average gain feature on the RP card. I've
noticed that when I correct source placement problems and by doing so
make the average gain close to one, the reported change in antenna
gain is very similar to the amount of average gain change. Is this
coincidence, or is it legitimate to simply correct field strength
results (and presumably currents also) by dividing the field strength
by the average gain? I can see where there might be a problem with
this when multiple sources are involved, since they might contribute
unequally to the error. And of course it couldn't be done if any
source of loss is present in the model. But in other cases, will this
procedure lead to reasonably accurate results?

Roy Lewallen
Received on Tue May 02 2000 - 03:32:47 EDT