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A j-pole is not truly omnidirectional as it will have slightly more gain on the side the stub is on as opposed to the other. However, you won't notice the difference in the real world. If you have deep nulls in one direction on the horizon and not another, that will likely have more to do with...

As said from someone who has demonstrated multiple times that he doesn't actually understand how antenna modeling software actually works. If you bothered to read the entirety of the post you quoted from, you would see that I not only understand this, but I actually spoke to this. That being...

I know its been a while, sorry, I've just been very busy and my long responses can take some time. The current is 100% responsible for all radiation from an antenna. If the voltage contributed to radiation, the modeling programs would also show the voltage. Odd, every time I do this, the...

That has definitely been posted here before. It is a good article, and there are many that can learn much from what is within, but what was left out is also telling. SWR is not what is making people stupid, our modern day view of SWR is actually little more than a side effect of the real...

Here are some images for you. First, the center fed current magnitude by itself. This is close to one of the images you posted above. 6717 Now the phase data for that model. 6715 And finally the two sets of data put together. 6716 Then the same three again for the end fed variant...

I got Mmana-gal working in linux, so I can use it if need be. Man its been a while since I used this program. I had to really search around to find the place to put in the feed point... Unfortunately there is nothing here that shows the phase of the signal, at least that I can see. When I...

I'm not sure if mmana-gal can show the combined current and phase data. If it can that will give a visual on what I am talking about below. If it can't, let me know, I will make some models in 4nec2 where I can add the phase and current data together and post them for you. EDIT:Actually, I...

A 12 year old thread resurrected so someone could use a linked document and quoted text, both of which are being used out of context, to try and say "see I was right"? Suggestion, read your own information again, and while your at it, try putting it it in the context intended by the authors...

To answer the first question, it depends on your point of view. I have seen both methods used by hobbyists. For example, shortened mobile antennas that are 5 foot long are often referred to as shortened 1/4 wavelength antennas, and some people don't bother to put the shortened. The Imax 2000...

Yes, I meant anechoic chamber. It was after a long day of overtime and I was tired. I am doing the same thing again so if I make such a mistake again I will correct it when I am more awake. Yes, that is how they are designed. Never said it did, nor does it need to. You seem to think that...

Actually, I think you did bring up something that I should have covered better in my first post... While I use field strength when tuning antennas, in this case I used an antenna model to get a gain in dBi as my starting point. I thought I mentioned this but as I go back and reread what I...

I know, there are a lot of people that will quickly say yes and move on. I was once one of them. I note that it is interesting that no one that said tuning for "resonance" is always the best has been able to actually show this. They believe it to the core and can often give hypothetical...