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Those who know modeling, if you make improvements, please publish as well as I do. We are to provide. Take a couple of models, one without and one with mast

SIRIO VECTOR 4000 SIGMA IV PHASES AND COURRENTS You supposed more than me, since j-pole is really half wave with adapter 1/4 wavelength, like the SIRIO IV. The data sheets say that the antenna is a j-pole. 4NEC2 also has a drawing explaining what you believe, is called CURRENT IMAGINARY...

No sense making a j-pole when a slim-jim is much better. Slim Jim vs J-Pole Antennas | KB9VBR J-Pole Antennas Build the Slim JIM Antenna A Uni The manufacturers say the Sigma IV is a j-pole. http://www.nevadaradio.co.uk/amateur-radio/antennas/base-antennas/sirio-new-vector-4000 (Type: 3/4...

They could show a single model that shows it is more than an antenna 5/8, or even a simple dipole. The only thing that made ​​a real-world test was -wavrider- and went they said that the team that used the Sigma IV had no power, had a headwind or coax was shorter, perhaps a lobe that will was...

Sigma V4000 Antena Sirio V4 irradiation pattern 4NEC2 .NEC Here I made a pretty complete with cone and feed point. What I see is that the radiation efficiency is very low, which makes "my myth" is quite real??. The cone does not help, hinders the gain and the performance is not helped, unlike...

Here I made a pretty complete with cone and feed point. What I see is that the radiation efficiency is very low, which makes "my myth" is quite real. The cone does not help, hinders the gain and the performance is not helped, unlike their presence is very negative.

:thumbup:

tailwind? Perhaps it is better to put the antenna on a hill slope to Reinforce the power to exploit the radio frequency falls by its own weight... and with the full moon behind...:unsure: These forces such as terrestrial and lunar gravity also help the antenna. It can be proven scientifically

So this is 0 and 180 degrees???? :unsure:

Obviously, when they run out of arguments and reasons for, dodge the discussion on the subject, try to divert, or sermonize. This is the Sirio GainMaster Antenna . She has no opposite phase currents. The Vector 4000 SIGMA V4 also have powerfuls opposites currents. If you follow...

You only refers to time radiates "in phase", but never speaks when he does against phase as I have shown. ......................"Law of Reciprocity" So you say that the antenna is good "because it radiates down", but it does so minimal, most of her energy is lost in a high one above 30 °...

To make a "gain" there must be a loss. Directional antennas lose signal in a direction to increase it in another. The vertical not, then emitted equally in all directions, however much radiation smash lobe therefore should not speak of "gain" of a portrait but efficiency is not the same as...

Lil'Yeshua, you have a Sigma 4. Where is the antenna, because it is not used? use it sometime? had much swr? Problems?

You do know that your dominator is nothing more than a j-pole with skirt??

In the case of wanting to use antennas 3/4 wave dipole instead, I prefer an array of slim jim. Much simpler to adjust, more economical, less complicated.

You confuse rather plays the fool, because he knows very well that the circular polarized antennas can not be compared with Vertical polarization antennas. How much loss have your antenna with respect to a horizontal? 30DB? :sneaky2:

Commercial broadcast use this antenna arrays. and this How to make a GAIN easily with a pair of the collinear and uncomplicated common dipoles

His assumptions are thwarted by the law of reciprocity http://en.wikipedia.org/wiki/Reciprocity_(electromagnetism)

This time also indicates that CONE ALSO WORKS IN REVERSE IN PHASE WITH ANTENNA. Is clearly visible ANTENNA THAT IS CANCELLING IN PHASE AUTO INVERTED. The antenna also cancels itself, generating neutral fields between opposing currents. The CST model antenna diplay this in slow motion in...