Telamon wrote:

In article 1Rt8e.2096$lz1.1199@lakeread01,
"Jack Painter" wrote:

"dxAce" wrote

Jack Painter wrote:

"dxAce" wrote

Jack Painter wrote:

"§ Dr. Artaud §" wrote I would
like to switch to a V shaped antenna, perhaps it is what they
refer to as an "inverted V" extending from a central point on
my house to both sides of the property. I would like to feed
the antenna with coax, so as to reduce the likelihood of
household interference.

Thanks for any help.

Dr. Artaud

The Inverted-vee is a center (or off-center) fed dipole with
it's ends lower than the feedpoint. Rarely a desired design,
it usually results from being unable to elevate both ends
equal to the feedpoint of a half wave dipole. It nonetheless
works fairly well and is a "complete" antenna, requiring no
grounding. It is not a vertical antenna as Ace suggested.

They are generally vertically oriented, therefore the 'inverted
vee' designation.

dxAce Michigan USA


Huh? Please describe what you mean by a "horizontal
inverted-vee" v.s. a "vertical oriented inverted-vee" Dr. Arnaud
clearly described an inverted-vee where the house forms the
center feedpoint and the ends are lower at opposite ends of his
property. This is like every other inverted-vee I ever heard of,
whether center point was a tower or any other kind of support.
Just because the ends slope downward (giving some vertical
component to the antenna) does not make it a vertical-oriented
antenna. It is not. It does have less directionality because of
it's vertical component, and slightly wider bandwidth than a pure
horizontal half wave dipole.

No, actually it has less bandwidth. Look it up!

It is also less efficient.

You get back to me after you go to 'antenna school'! And, after you
finally figure out the difference between 'horizontal' and
'vertical'.

I don't think I ever really mentioned a 'horizontal inverted
vee'...

You really need to pick up an antenna book or two and actually go
out and build some stuff.

Please, go back and read the original posters comments and actually
try to envision what he was proposing, which would seem to be a
'horizontal vee'.

At any rate, using an 'inverted vee', or a 'horizontal vee' dipole
antenna for general shortwave listening is simply a bad idea.

Your inexperience is certainly showing this morning, Jack.

dxAce Michigan USA

Steve,

Here are your exact words to Dr. Artaud:

"An inverted 'V' itself would be vertical... a horizontal 'V' I think
is what you envision."

Now as I tried to kindly point out before, you are mistaken in
calling that horizontal as compared to some imaginary and "normally
vertical inverted-vee". Of course it's horizontal, and my question
to you was "what other kind is there"? Which you have failed to
answer. I'm still waiting to hear about this vertical-inverted-vee
you're touting. I've been to some antenna schools, and I guess I
missed the day they covered your vertical-inverted-vee.

That is simple it is a vertical dipole where the angle between the two
elements is something other than 180 degrees. You would need two instead
of one mast. Maybe you could call it a vertical C instead.

No, actually one only needs one center support or mast.

There is some confusion here regarding vertical and horizontal
polarization and the V height. Ace is being physically descriptive and
Jack is talking about the electric polarization.

I have not looked up the efficiency but I expect that the V is more
lossy for transmitting and that does not apply to receiving. The angle
for receiving will affect the angle of reception though.

Again, no... it is no more 'lossy' than anything else as long as it is cut
properly.
In practical terms I found the pattern from them to be a bit more omni than what
one might consider a 'standard' dipole to be, but yes, losses applying to
transmitting apply just the same to receiving. A loss is a loss is a loss.

I've had numerous 'inverted vee's' up over the years and found them to be very
good mono-band antennas. Having said that, they are generally very tight
frequency wise and if one wishes to make broad excursions an antenna tuner would
be highly advised.

My current plan here is to put up a 60 or 90 meter band inverted vee for the
upcoming 2005-2006 season. I'd like to put up a long wire to S. America, and
that may be possible if I can secure my neighbours permission, at least over the
winter months.

My problem here at present is that my lot is 85' by 462' and I do have
unrestricted access to the West and North East, up to say 1000' but I am limited
to the South East for something in the several hundred foot range for South
America, providing I can secure permission to cross the neighbours property.

Currently I do have a 70' and 200' wire up.

dxAce
Michigan
USA