with the use of 450 ohm feedline and a manual tuner.

Where I can purchase this kind of line ?
(some online mall that delivery outside USA/Canada),
because I can't find it here in Italy.

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

Frank, the exact impedance of the high impedance line doesn't matter at all.
You don't even need to know what its impedance is. Line loss is small just
because it has a high impedance.

Any line where the pair of wires are spaced apart more than 25mm will be
satisfactory. Wire spacing can change along its length without any bad
effects. The only effect will be a change in tuner component settings.

If you are unable to purchase a line then it is not difficult to make. You
can make the stuff in less time than it takes to order and deliver from a
manufacturer.

Use 1.6 or 1.3 mm diameter wire. Space the wires 50 mm to 100 mm apart.
There are many ways of fixing the wire to the ends of rigid plastic spacers.
The distance between spacers along the line can be anything from 100 to 200
mm. Construction depends on your judgement of what weather conditions, wind
velocity, etc., the line will have to withstand and the time in months.
Failure due to flexing in the wind can be a problem.
----
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

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

On Fri, 2 Jul 2004 08:59:17 -0400, "Dee D. Flint"
wrote:


"Bob Miller" wrote in message
.. .
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



10 meters = 32.8 feet
11 meters = 36.1 feet

A meter is approximately 3 feet and 3 inches NOT just 3 feet. Those inches
add up after a while.

Dee D. Flint, N8UZE

Yes, this is how I bombed in basic Trigonometry and decided to not
become an an Electrical Engineer :-)

Bob
k5qwg

On Fri, 2 Jul 2004 08:59:17 -0400, "Dee D. Flint"
wrote:


"Bob Miller" wrote in message
.. .
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



10 meters = 32.8 feet
11 meters = 36.1 feet

A meter is approximately 3 feet and 3 inches NOT just 3 feet. Those inches
add up after a while.

Dee D. Flint, N8UZE

Yes, this is how I bombed in basic Trigonometry and decided to not
become an an Electrical Engineer :-)

Bob
k5qwg

"Bob Miller" wrote in message
...
On Fri, 2 Jul 2004 08:59:17 -0400, "Dee D. Flint"
wrote:


"Bob Miller" wrote in message
.. .
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



10 meters = 32.8 feet
11 meters = 36.1 feet

A meter is approximately 3 feet and 3 inches NOT just 3 feet. Those
inches
add up after a while.

Dee D. Flint, N8UZE

Yes, this is how I bombed in basic Trigonometry and decided to not
become an an Electrical Engineer :-)

Bob
k5qwg


I tend to remember that a meter is 39.37 inches. Makes for an extra step,
but fewer numbers to remember.

Tam/WB2TT

"Bob Miller" wrote in message
...
On Fri, 2 Jul 2004 08:59:17 -0400, "Dee D. Flint"
wrote:


"Bob Miller" wrote in message
.. .
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



10 meters = 32.8 feet
11 meters = 36.1 feet

A meter is approximately 3 feet and 3 inches NOT just 3 feet. Those
inches
add up after a while.

Dee D. Flint, N8UZE

Yes, this is how I bombed in basic Trigonometry and decided to not
become an an Electrical Engineer :-)

Bob
k5qwg


I tend to remember that a meter is 39.37 inches. Makes for an extra step,
but fewer numbers to remember.

Tam/WB2TT

Dear Tam:
During WW2 the value was changed. UK, Canada, and USA each had a
slightly different value. Became a problem with things having threads.
I think that the Canadian value won. Now: one inch is 25.4 mm
exactly.

73 Mac N8TT

--
J. Mc Laughlin - Michigan USA
Home:


"Tam/WB2TT" wrote in message
...

snip

10 meters = 32.8 feet
11 meters = 36.1 feet

A meter is approximately 3 feet and 3 inches NOT just 3 feet.
Those
inches
add up after a while.

Dee D. Flint, N8UZE

Yes, this is how I bombed in basic Trigonometry and decided to not
become an an Electrical Engineer :-)

Bob
k5qwg


I tend to remember that a meter is 39.37 inches. Makes for an extra
step,
but fewer numbers to remember.

Tam/WB2TT

Dear Tam:
During WW2 the value was changed. UK, Canada, and USA each had a
slightly different value. Became a problem with things having threads.
I think that the Canadian value won. Now: one inch is 25.4 mm
exactly.

73 Mac N8TT

--
J. Mc Laughlin - Michigan USA
Home:


"Tam/WB2TT" wrote in message
...

snip

10 meters = 32.8 feet
11 meters = 36.1 feet

A meter is approximately 3 feet and 3 inches NOT just 3 feet.
Those
inches
add up after a while.

Dee D. Flint, N8UZE

Yes, this is how I bombed in basic Trigonometry and decided to not
become an an Electrical Engineer :-)

Bob
k5qwg


I tend to remember that a meter is 39.37 inches. Makes for an extra
step,
but fewer numbers to remember.

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