--- In topband-helical@..., "k5est" <k5est@...> wrote:
>
> --- .............snipped..................
> > At the moment I am making a sloper for top band using 12 wires
> > interlaced together and connected into one complete circuit withb the
> > addition of a variometer. Getting excited with this one!
> > Cheers
> > Art
> >
>
> ...............
> Tnx Art, for the reply. I do have spare telephone
> wire (4 conductor in a sheath). Have to prepare the
> wire. Good luck on the Top Band Slooper.
>
> Wanted to mention, I still use a calculator and
> paper to do antenna designs. The computer programs
> are great but only as smart as the input's mind
> and the program software design originator. Nobody
> knows it all when it comes to antennas so the
> old proven formulas have held up good enough
> for me besides this is amateur radio....not rocket
> science, which is similar to picking your nose,
> ........searching in a dark hole for something
> to extract to prove that black holes are not
> void!<k5est-2007>
>
> Of all the modern antenna tuners / couplers.....the
> variometer is the one thing they forgot to include.
> Guess it was just too good with it's less loss than
> a tapped inductor.......Grin!
>
> Back to Top Band Helix..........I do have a nicely
> working helical/long wire antenna that is working
> pretty well. 8 radials are used that are 50 feet
> long, each and that is a portable setup. Really
> having 16 to 20 radials seems like a good
> compromise for a home station.(Sorry guys, I don't
> know metric conversions). Next step is working on
> a usable multi-band Helical/long wire using
> ladderline/ twinlead/open wire feeders....
> whatever the term is at your QTH.
>
> Cheers to you, Art........73....Walter - K5EST
>
What ever you do don't leave the wire in the sheaf. Cut the wire in
pairs say 25 feet and pre twist them. Shame the G,s just wind the wire
in one direction. The idea is to have zero added lump loads and if the
antenna is made small then obviously you have to cancel what you added
it is as simple as that. Computer programs were made around Maxwells
laws which produces non planar arrays so they screwed around with it
so it would work with coupled radiators.If they had left it alone we
would have seen a lot of new antennas made based on Maxwell
laws. Humans are wierd. unwinantennas.com