Tree I did model my system, but only a very rudimentary replication. I just modelled the Yagi on top as a big T. I just did it to grossly represent the driver in my parasitic array.
Maybe you have already seen my shunt feeding video, but if not maybe check it out. I talk about some tricks to simplify finding the 50 ohm match point for the shunt arm. If you measure the real R at the shunt arm location now with the new top loading, you should get a pretty good idea how far up to move the tap. https://youtu.be/cHlc5MTGTFM This video talks about the Omega match if you don’t want to move the shunt arm. https://youtu.be/NA-Kwr09j8M 73, de Steve Ve6wz From Babcocks iPhone > On Aug 4, 2020, at 11:01 AM, Tree <[email protected]> wrote: > > Anyone have an EZNEC model of a gamma matched tower for 160 (or 80 meters) > they are willing to share? I put a bigger antenna on top of my tower and > would like to take some of the guesswork out of fixing the SWR. > > Thanks. > > Tree N6TR > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
