Yep... it's hard to beat these simplistic center-fed antennas that Tom has
described. Just match or "tune" these low loss antenna systems (system =
antenna and balanced feed line) with a capable tuner, and work the
world. A combination of low and high ones like the 100' or 135' models
would serve stateside and DX interests. Just take into consideration their
patterns when changing bands. BTW, many articles have been written on
these balanced line, center fed antennas. They show the patterns, takeoff
angles, and the varying amounts of gain they have for each band,
considering different heights above ground. I'm sure someone can point out
the specific articles - I remember one in QST a few years back. Who needs
a G5RV with it's coaxial losses if you can bring "ladder" or open wire line
into your shack? With a complete balanced line run from the tuner to the
antenna, these are SUPERIOR and ELEGANT. I've enjoyed them at different
locations over the years... though I sure wish they were at 100+ feet like
Tom's!
73, Steve, KZ9G
At 01:20 AM 7/6/2002 -0600, you wrote:
>A *simple* solution to the 100 ft space limited antenna problem
>is to just install a 100 ft center fed dipole using Ladder Line feeders
>and an Antenna Tuner such as a Johnson Matchbox.
>
>I have 4 Ladderline fed antennas (2 - 80M dipoles, 1 - 100 ft CF,
>1 - 20M dipole) which I use extensively on 80M the WARC bands.
>I have worked over 320 countries on each of those 4 bands.
>(OK, the 80M dipoles are at 130 ft and the 100 ft CF is at 100 ft)
>
>Tom N4KG
>
>On Sat, 06 Jul 2002 "S. Markowski Jr." <km9m-zig@attbi.com> writes:
> >
> >
> > Van K7VS wrote:
> >
> > > with a g5rv, keep your antenna tuner handy as you WILL need it
> > for all
> > > bands. Certainly a compromise antenna but useful in some
> > instances.
> >
> > You "CAN" work alot of DX with a G5RV and 100 watts. You will learn
> > one new character trait.....
> > "PATIENCE"!
> > 73,
> > Zig KM9M
> >
> > _______________________________________________
> > Self Supporting Towers, Wireless Weather Stations, see web site:
> > http://www.mscomputer.com
> > Call 888-333-9041 to place your order, mention you saw this ad and
> > take an additional 5 percent off
> > any weather station price.
> > _______________________________________________
> > Towertalk mailing list
> > Towertalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
>
>
>________________________________________________________________
>GET INTERNET ACCESS FROM JUNO!
>Juno offers FREE or PREMIUM Internet access for less!
>Join Juno today! For your FREE software, visit:
>http://dl.www.juno.com/get/web/.
>_______________________________________________
>Self Supporting Towers, Wireless Weather Stations, see web site:
>http://www.mscomputer.com
>Call 888-333-9041 to place your order, mention you saw this ad and take an
>additional 5 percent off
>any weather station price.
>_______________________________________________
>Towertalk mailing list
>Towertalk@contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
|