Franj,
Can it be done? Yes. Will it be the 'best' of antennas
on all those bands? No. But, if that's all that you can
do, then do it. Anything is 'better' than nothing! Beware
of antenna manufacturor's claims. Taxes are never going down,
and there's no 'miracle' antennas that do everything...
'Doc

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

===========================

All dipoles of any reasonable length, inverted-V or not, commercial or home
brew, are quite efficient on all HF bands in that they all radiate most of
the power which is put into them. The problems lie in loss in the
transmission line and the essential tuner.

Erect the highest and longest dipole you can, feed it with open-wire line,
use a tuner appropriate for each band of interest and you won't be
disappointed.

Or better still, if you can manage it, erect the longest inverted-L you can
and feed it at one end tuned against a modest ground system such as a dozen
bent surface or shallow-buried radials.
----
Reg, G4FGQ

"/* frank */" wrote in message
...
I can install only a dipole of about 10 meters
(as inverted V).

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

Thanks

Frank,
Any antenna you put up is not forever. So, start small. At this pont in the
sunspot cycle there is not much propagation on 10 & 15 m. A wire 10 m long
is resonant at very close to 14.2 MHz. Feed it in the center with 50 Ohm
coax, and get on 20 meters. As an inverted V, you should be able to trim the
SWR to well below 1.5:1.

Tam/WB2TT

"/* frank */" wrote in message
...
I can install only a dipole of about 10 meters
(as inverted V).

sure, go for it!


Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

just put one up, add a tuner if your radio doesn't have one, and get on the
air! it will work fine, cover all bands from dc to daylight, is cheap, easy
to use, whitens your teeth while you transmit, and is non-fattening. don't
go pay anyone for it, just grab some wire and (horrors upon horrors) build
it yourself.

oh, and ignore the inevitable discussion that will follow shortly about why
you have to use open wire feeders instead of coax, endless debate about swr,
tuning, reflections, losses, matching, etc, etc, etc... stop reading now and
go get on the air!

"/* frank */" wrote in message
...
I can install only a dipole of about 10 meters
(as inverted V).

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

A very good antenna is a half-sized G5RV (7.5m each side). Excellent
results 7 - 28 MHz. Use tuned feeders (any length) and ATU.

73, Peter

On Fri, 02 Jul 2004 07:42:24 +0200, /* frank */
wrote:

I can install only a dipole of about 10 meters
(as inverted V).

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

Thanks

If you can make it 11 meters long, about 33 feet, that should get you
14 thru 28 mhz, with the use of 450 ohm feedline and a manual tuner.
If you can stretch it to 51 feet, you can add 10 and 7 mhz.

bob
k5qwg

Franj,
Can it be done? Yes. Will it be the 'best' of antennas
on all those bands? No. But, if that's all that you can
do, then do it. Anything is 'better' than nothing! Beware
of antenna manufacturor's claims. Taxes are never going down,
and there's no 'miracle' antennas that do everything...
'Doc

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

===========================

All dipoles of any reasonable length, inverted-V or not, commercial or home
brew, are quite efficient on all HF bands in that they all radiate most of
the power which is put into them. The problems lie in loss in the
transmission line and the essential tuner.

Erect the highest and longest dipole you can, feed it with open-wire line,
use a tuner appropriate for each band of interest and you won't be
disappointed.

Or better still, if you can manage it, erect the longest inverted-L you can
and feed it at one end tuned against a modest ground system such as a dozen
bent surface or shallow-buried radials.
----
Reg, G4FGQ

"/* frank */" wrote in message
...
I can install only a dipole of about 10 meters
(as inverted V).

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

Thanks

Frank,
Any antenna you put up is not forever. So, start small. At this pont in the
sunspot cycle there is not much propagation on 10 & 15 m. A wire 10 m long
is resonant at very close to 14.2 MHz. Feed it in the center with 50 Ohm
coax, and get on 20 meters. As an inverted V, you should be able to trim the
SWR to well below 1.5:1.

Tam/WB2TT

"/* frank */" wrote in message
...
I can install only a dipole of about 10 meters
(as inverted V).

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

Thanks

It's probably going to work like crap on 7 MHz. Consider buying
a GOOD tuner, and also try tricks like feeding the coax
common mode (shield and center tied together) to run your
ten meter dipole as a top loaded vertical wire. This assumes
you can run the coax or balanced line in a straight run away from
existing structures. You'll also need a good ground or a few
on the ground radials for the antenna to work against when
it is being run as a vertical. Don't be afraid to experiment.

Pete