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Comparison of Imax models with and without capacitor at 20 feet above the earth. No mast or radials were included in these models.

Comparison of Imax models with and without capacitor at 30 feet above the earth. No mast or radials were included in these models.

Comparison of Imax models with and without capacitor in free-space.

I got some of the modeling I want to do done, here is what I have so far. All of these are models of just the antenna, one in free-space, one at 20 feet above earth, and the last one at 30 feet above earth. None of these have mast or feed line, or any form of ground plane attached, that is...

I don't recall what specifically I used for the overall length, and I don't recall where I got it from, I want to say the imax exposed article that has been floating around the web since long before that, but am not sure. I think I would disagree with this, as its not the % of overall length...

If you look in the imax thread I created not long ago (here is a link), the quotes contain a link to the direct messages I found said data in. Unfortunately I haven't been able to add to that thread lately as I have been working long hours, but I want to model the antenna with and without a...

Balanced antenna? That would imply being center fed, unless there is another way to try and balance a vertical antenna? So its a T2LT or perhaps a Gainmaster style of matching? I would lean towards the T2LT type as that can handle quite a bit of power on its own without a matching circuit...

The old way of using pics from albums appears to not work with the forum update, so here are the images above, this time uploaded straight to this message, I think... The first one is the imax without the capacitor, the second one is with said cap. The DB

I would also like to know this. The DB

There are ham radio contesting stations that have massive towers with the several of the same antenna at multiple places on said towers. They not only switch between antennas, but also run some or all of the antennas in phase, which all affects the angles that said antennas are sensitive to...

For those interested I have found some of my models on this concept, they are posted on the forum in this thread. I didn't put them here because, even though it took up over a page of posts, it really is off-topic to the thread as a whole. The DB

I thought I lost all of these models, but apparently I haven't. I'm not sure when I made them, but it is in a folder listed as before 2020 models. One thing I am certain of is it isn't my original imax models meant to test weather a capacitor was present or not, the techniques I used are more...

@Chris120 now your just making things up. I would personally say that you are projecting your problems onto me, just because I had the gall to call you out on your trollish behavior that apparently you think is acceptable because 'this is a forum'. Anyway, I'm done with this. I will let the...

It was what, six years ago I did the initial modeling on this? Marconi made some models as well. Unfortunately my models were lost due to a hard drive crash, well two drive crashes that were a few minutes apart from each other the second one killing my backup, but the threads are still here...

Wow, what a terrible attempt at trolling. I see the post you are responding to four pages ago, and of course, like a typical troll, you didn't even bother to link to it. Go figure. Physically, yes, no argument there, but physical length is not necessarily the same as electrical length. To...

@Dr_DX, you went beyond your own words in an effort to make your point. I always give props to people who post more than just their thoughts. Two things. One, something no one on this forum will argue with you on, yes, an electrical half wavelength of feed line will repeat the impedance of...

So, mind linking us to where some of this "well known ham's" said this? Or was this just a crutch to try and silence the person questioning your statement. The DB

This will be something that likely only the manufacturer will be able to answer, if they choose to. I don't know of very many people that will drop that kind of money just to find out the answer to that type of question on their own, and even if the world smiled on someone and these antennas...

The g7-144 covers the 2 meter ham band, so I'm guessing somewhere in the range of 144 to 148 MHz give or take. The g7-150-1 is advertised as covering 148 to 155 MHz, the g7-150-2 is advertised as covering 154 to 161 MHz, and the g7-150-3 is advertised as covering 161 to 168 MHz. The DB

Be careful with these tables. What they call "loss" isn't actually loss. The correct term would be "reflected", as that much power will be reflected, and I get how some would think that since it was reflected it was "lost", but in reality not all of it is, and in most cases, most of it...