And, by the way, K5GN and W5KU report that their Beverage above a barbed wire fence is the BEST Beverage at their place.
Chuck W5PR On Sat, Aug 24, 2019 at 12:41 PM Chuck Dietz <[email protected]> wrote: > I seem to remember someone saying the modelling programs are unreliable > when a wire is close to the ground. Also, there is really no way to model > the properties of "ground." It can vary in just a few feet and the moisture > content varies from day to day. I think this is a "try it" kind of antenna. > Read other's reported results. > > Chuck W5PR > > On Sat, Aug 24, 2019 at 12:29 PM Mike Waters <[email protected]> wrote: > >> The only way to predict the RDF and pattern is by modeling it. I don't >> know >> of anyone who has done this. I have a few of my .ez Beverage models in >> w0btu.com/files/ as a starting point, but I don't think that I uploaded >> everything there. >> >> There are free antenna modeling programs out there. I have only ever used >> EZNEC. Maybe someone can suggest something. >> >> 73, Mike >> www.w0btu.com >> >> On Sat, Aug 24, 2019, 12:05 PM Mikek <[email protected]> wrote: >> >> > > But what did you mean by "proper pattern"? >> > >> > I should have said, the best pattern that adjusting the Inductive loads >> > will provide. >> > >> > Yes, I understand the pattern changes with frequency. What I want to do >> is >> > inductively load the antenna, so it will have the same pattern as if we >> > increased the length. >> > >> > Say I have a BOG with a length that is ideal to give me the best RDF >> > number available at say 1.8Mhz. >> > Now, I move down to 1MHz, and I inductively load it, can I get that >> same >> > RDF number? >> > ie. can I reduce the VF to make it act like the correct length? >> > What are the caveats? >> > >> > Thanks, Mikek >> > >> _________________ >> Searchable Archives: http://www.contesting.com/_topband - Topband >> Reflector >> > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
