"Cecil Moore" wrote in message
...
Thierry wrote:
Without speaking about heigth above ground, QRG and length, how do we
explain the more or less omnidirectional pattern against a dipole, see
diagram at

http://www.astrosurf.com/lombry/Radi...on-pattern.gif
if there is no radiation from the coaxial ?

The vertical coax section between the impedance matching device at the
feedpoint and the RF choke is designed to radiate and it does. The
coax between the RF choke and the source is designed not to radiate.
--

Hi Cecil,

it is well what i though, but in my case this is a Carolina Windom like on
this drawing
http://www.astrosurf.com/lombry/Radi...windom-dwg.gif

The balun is attached to the wire and there is no segment above it. the coax
enter the balun and the otehr side goes to the TX
hence my question. And is this design still a Carolina Windom, excepted the
segemnts of 1/3 2/3, it looks more to a hybrid between the dipole and the
Windom... isn't it ?
And on this model, if it uses a choke balun (what is not sure) the coax 'd
not radiate RF, othewhise of course if radiate much, like an vertical

Thierry, ON4SKY



73, Cecil, W5DXP


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it is well what i though, but in my case this is a Carolina Windom like on
this drawing
http://www.astrosurf.com/lombry/Radi...windom-dwg.gif

The balun is attached to the wire and there is no segment above it. the
coax
enter the balun and the otehr side goes to the TX
hence my question. And is this design still a Carolina Windom, excepted
the
segemnts of 1/3 2/3, it looks more to a hybrid between the dipole and the
Windom... isn't it ?
And on this model, if it uses a choke balun (what is not sure) the coax 'd
not radiate RF, othewhise of course if radiate much, like an vertical

Thierry, ON4SKY


What you have is the standard Off Center Fed antenna. A true Windom is fed
with a single wire about 1/3 the distance from one end. Many are calling
the OCF antenna a Windom which it is not. The OCF antenna is often called a
Windom by mistake. The Carolina Windom has about 6 meters of coax that is
vertical below the horizontal part and then a common mode choke. The
vertical is suspose to radiate some signal for DX and the horizontal is for
a higher angle of radiation for the close in stations. I don't know if it
actually works this way in practice , but that is their selling point. Here
is a URL for the Carolina Windom.

http://www.radioworks.com/ccwcover.html

Thierry wrote:
it is well what i though, but in my case this is a Carolina Windom like on
this drawing
http://www.astrosurf.com/lombry/Radi...windom-dwg.gif

The balun is attached to the wire and there is no segment above it. the coax
enter the balun and the otehr side goes to the TX
hence my question. And is this design still a Carolina Windom, ...?

Good Grief! No, that is *NOT* a Carolina Windom, which is an antenna
sold by Radio Works. Hopefully, they have it copyrighted and therefore
can object to the above BS. See it at

http://www.radioworks.com/ccwcover.html

The antenna you mention is simply an off-center-fed dipole, not really
a Windom at all. (Why are people with 65 IQ's allowed to build web pages?)
--
73, Cecil, W5DXP


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"Cecil Moore" wrote in message
...
Thierry wrote:
it is well what i though, but in my case this is a Carolina Windom like
on
this drawing
http://www.astrosurf.com/lombry/Radi...windom-dwg.gif

The balun is attached to the wire and there is no segment above it. the
coax
enter the balun and the otehr side goes to the TX
hence my question. And is this design still a Carolina Windom, ...?

Good Grief! No, that is *NOT* a Carolina Windom, which is an antenna
sold by Radio Works. Hopefully, they have it copyrighted and therefore
can object to the above BS. See it at

http://www.radioworks.com/ccwcover.html

The antenna you mention is simply an off-center-fed dipole, not really
a Windom at all. (Why are people with 65 IQ's allowed to build web pages?)

the 65 IQ has nothing to do with it. The problem is that the manufacturer
sold it as a Windom...
and it is as it is off center fed... with a simple balun and coax, but the
opposite is not true.
Ok it is not a carolina, it 's only me who mixed both designs.

73
Thierry

--
73, Cecil, W5DXP


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