There is a significant difference between actual antenna gain and the increase in performance associated with height and TOA.
Lets try and break this down in ways that are easy to understand. Completely forget about this idea of any single 1/2 wave radiator having any db gain whatsoever. This is completely impossible regardless of how you feed it. Unless of course the 1/4 wave underneath it contributes to the in phase radiation.
Elevate the 1/2 wave and use any matching network you like the end result is still unity gain at best. Please show me any application that implies it's possible to have omni directional gain in any half wave radiator.
At least here you make some sense. However, you fail to understand the reasons behind the effect. Eight feet of elevation and the worlds best feeding system is never going to remove the approximate 45 degree lobe on a 3/4 wave ground plane or give a 1/2 wave gain. On the other hand, shielding that lower 1/4 wave of the main radiator does remove most of this lobe and improves field strength on the horizon. Radiation from the cone also constructively reinforces this. Now we have far field gain where it counts.
I can certainly determine the difference between what is useful to understand this antenna and what Cebik referred to as the meaningless pages of nonsense that discussion of this non apparent colinear would generate. The Avanti team that built the first ones never once called it anything like a J-Pole. In an effort to name a nameless design it was Sirio that used the term "Coaxial J-Pole". I assure you the word coaxial makes a huge difference in the J-Pole.
For the most part I avoid discussing my credentials or business in this forum. It does take priority over the fun I have here sharing with others. I've spent over 15 years perfecting this design for Broadcast use. Learning from the brightest minds in this specific area. I don't make a dime of profit on any CB antenna and none of my customer base is here. I've logged over 1000 hours on the test range regardless of weather. Back in the day I use to weld each antenna together by hand. The results of this work and information produced is my property.
Before you could buy a Vector, I contacted the company with my specifications to arrange for them to mass produce the broadcast antenna exclusively for my company. Their expert staff was fully capable and more then willing to work with me. This provided me with access to information no one else has ever seen on this design. What did I do with it? I shared it with you guys before I even used it for it's intended marketing purpose.
What has it gotten me in return? Endless speculation from those who still can't think beyond the 1/2 wave J-Pole even when you prove the concept is false in the most tangible way possible. Tons of wasted time explaining it's concept of operation over and over. Technical data and my exact wording has been copied online and used to market other products. The few that truly understand antenna design here, expressed considerable appreciation for the one picture that was worth a million words.
You on the other hand claim I make excuses up for not sharing some hidden information with one who does not appreciate the material in the first place. Misleading others to think it's not shown at current maxima ("full bloom") or that some magic must be happening to allow the radials to reach current maxima at some other phase angle. It's been a long time since I played the game of "you must not have it or must be wrong if you don't show it". Please don't expect me to regress now.
