What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,

Thanks

"jawod" wrote in message
...
What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,


Use either an 80 meter dipole fed by open wire or one of the off center fed
dipoles, often called a Windom.

jawod wrote:
What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,

Thanks



I would use a fan dipole because of the harmonic relationship between
the frequencies you wish to operate on. Others might use a
trap dipole but traps always have some loss involved and may fail due to
moisture.

KD5RPO

ORIGINAL MESSAGE:

On Sun, 01 Jan 2006 22:42:53 -0500, jawod wrote:

What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,

Thanks
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I use the W9INN trap dipole and I love it. The "traps" are not the
conventional coil/capacitor kind. Rather, they are a self-resonant
inductor with no separate capacitor, and they are rated at full legal
power as a result.

I run the antenna at 1500 watts on RTTY, probably the toughest working
conditions possible. It's been up five years through more than 40,000
contest QSOs and not a minute's problem.

W9INN is now an SK and I don't know if they are still in production,
but they are simple enough to homebrew if you have a grid dip meter.
The ARRL antenna book has more info on building this type of antenna.

73, Bill W6WRT

jawod wrote in :

What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,

Go for height first, then for length. Just build the biggest, highest damn
dipole you can and feed it in the center with open wire line, 450 ohm line
or 300 ohm TV lead, whatever you can get. Tune it at the rig with a
balanced tuner. If need be fiddle with the feedline length until you can
get it to work on all the bands you wish to use it on.

I've never had this approach fail me. Of course if you want to work a lot
of DX on 80M, this is probably NOT the way to go (unless you can get it up
100 feet or more--at 300 feet it will sing no matter what you do, but you
need real trees for that kind of height).

--
Dave Oldridge+
ICQ 1800667

On Sun, 01 Jan 2006 22:42:53 -0500, jawod wrote:

What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,

How wide is the area that can fit an 80M dipole? You should consider a
large horizontal loop aka Loop Skywire. I also use my loop on 6 and 2
meters with HB balanced tuners.

73 de n4jvp
Fritz

What would you recommend for a wire antenna if there was enough room
for
an 80 dipole? Assume use for 80M , 40M and 20M,
.......................

Myself, I prefer separate dipoles for 80,40,20 fed in parallel with a
single
coax feed. I spread the antennas far apart to minimize coupling.
Why? Pretty much standard dipole performance on each band.
No tuner needed, and thus no tuner losses. Instant band switching.
About as efficient as anything you can run for the bands it's
designed for. Of course, you would need six tie off points, but
those can be trees, fences, whatever.. In the winter I usually
convert my 20m legs to 160m. In that case, it's a 160m "Z"
dipole, and the normal 80 and 40 dipoles fed in parallel. But, so
far this year, I've been lazy and it's still in the summer mode with
80-40-20. The 160 legs have an insulator at the "20m" point, and
I bypass those for 160 with a jumper. I can also set it up to run
on 80m as a turnstile as the 160 legs also have insulators at
the "80m" points. Well...There you have it... MPG will vary... :/
MK

Hello

If you want to operate on several bands .... I recommand you the center
feeded dipole.
I use en 2 x 20 m in inverted V configuration. It works fine.

Antenna:
http://www.barbaxoops.com/modules/xc...&album=7&pos=3

Antenna tuner:
http://www.barbaxoops.com/modules/xc...&album=7&pos=0

The home made 300 ohms feeder:
http://www.barbaxoops.com/modules/xc...&album=7&pos=2

Good luck and happy new year.

Jean-Marc
F4DRH
www.barbaxoops.com



"jawod" a écrit dans le message de news:
...
What would you recommend for a wire antenna if there was enough room for
an 80 dipole? Assume use for 80M , 40M and 20M,

Thanks