Bob, I also said I did not know what I would expect. This is why I asked Donald a long time ago if he could post the currents per segment and phase information from the CST model...I thought he had.
You're right Bob, I think there are only 2 currents with opposite phase flowing in the cone area of the S4 design, and the magnitudes are almost identical...thus we see cancellation and little to no far field radiation from the cone.
I'm simply using the coaxial theory:
Equal magnitude and opposite phase = cancellation, and thus we have no far field radiation.
Equal magnitude and same phase = far field radiation...like we see in a center fed dipole and a coaxial pig tail connections. Pig tail connections indicate what happens when we start to change the proper physical construction ratio for coax.
Your EzBob model of the open sleeve antenna I posted above suggests the currents are turned on. This EzBob model does not suggest the sleeve radiates either...due to cancellation. Like the S4 design, this one also shows mostly cancellation within the sleeve area, and there is no CMC flowing from the top of the cone or on the radials. The only way I might consider a real sleeve antenna to radiate with CMC is with an end fed dipole using coax shield folded back over the coax as we see in the 2Tl2 (not sure of the name) and/or the Gain Master radiator using the shield, or the 1/2 wave antenna noted below in Bill Orr's book, "The Truth About CB Antennas."
I did models as best I could on the monopole with 4 x 1/4 wave radials a 1/4 wave from the base of the monopole, but when I found my model named Open Sleeve dipole in the Eznec indes...it was a 1/2 wave center fed sleeved dipole, and not a vertical.
I have an Open Sleeve Antenna model like you mentioned, but I must have given it another name. I'll check and see if I can find it. I posted this model some time back, and made some comments regarding what I thought I saw using Eznec, but as I recall you shot me down. You said I did not understand the math. I didn't have a good argument due to a lack of understanding the article...so I dropped the whole idea. I may have deleted the models also, but I will look and if I find them I will repost.
I don't think Cebik was confused about currents. I think maybe he was ill and did not want to get into discussing the topic...knowing it could be complicated and on-going...just like you suggested. I assume he died soon thereafter.
Well Bob, I see where Donald has described several ideas for how he sees the Vector working, the latest of which claims, more or less, that the 1/4 wave cone radiates like a 1/2 wave radiator and he shows us that on the CST image he posted.
I don't know what Donald thinks about the OSA article, I don't fully understand what the article is all about either. Again, you made that clear when I posted the model of that Open Sleeve Antenna sometime back.
Bob, it was never about me not believing your words about talking to Cebik. You remember at first I believed what you were telling us, but now you forget latter when I got-off into modeling with Eznec...this is when I found no evidence of the gains you were suggesting, and started to disagree. We still don't know for sure what Cebik meant...and this is the issue. It has nothing to do with my believing you or not.
Before my learning to model, I did a month long test with my S4, consulting with you almost daily via emails. I learned some stuff about reactive antennas and feed point transformation during those discussions with you, but my testing proved nothing close to the gains...like you experienced.
If you what to know what pissed me off in regards to your words back then, long before Cebik and my modeling, I think you lead-me-on during the testing of my S4 noted above. Reason is, in the end you made the claim that the S4 was not able to produce the results you claimed with your Hybrid Vector. I wondered why you didn't just tell me that in the beginning. I never told you that my S4 did not work very well, quite the opposite, but you can't deny we were both frustrated and disappointed at my results in trying to help prove you right.
No Bob, I believed you...I took up the challenge to try and learn modeling with the idea that one day I might be able to prove you right on the S4 design. I asked you to join me in that effort...but you said you were not interested.
