Topband: KM5KG network designer

[Jim Brown]

On 2/10/2021 9:16 AM, Eric Scace K3NA wrote:
> More generally, is there a modern software tool available

Hi Eric,

Many of us are using SimSmith for modeling anything that can fit on a 
Smith Chart. Freeware, mature, runs in Java, imports Touchstone files 
from measurements and antenna models (in EZNEC, the result of a 
computation of complex Z and SWR over a user chosen bandwidth). It can, 
for example, take an antenna measurement made in the shack, subtract out 
the feedline, then put it back in with a matching network that we 
design, compute and plot loss from fundamental models of >50 common coax 
lines. Lots of optimization tools.

73, Jim K9YC