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Marconi read those numbers from a modeling program, and the program is, in fact, accurate. You made the mistake by dividing the absolute load impedance (or Z) from 50 ohms. This is not the correct next step. Below is a link to a web site that both has a calculator, and shows the actual math...

Glad I can help. I have noticed this as well, and agree with the older and wiser preacher here, at least mostly. That being said, I tend to scale my responses to the level of the person asking, not the lowest level that will ever read them. Sometimes, I'll put the answer right above where...

Yes, if they see themselves at the level of a technician, yes they should. Sadly most don't, and we get many CB Myths that have even filtered into the ham radio side because of it. The whole "does an antenna tuner actually tune an antenna" debate is a prime example of this. Anyone who...

A 5 foot base loaded antenna will outperform a 3 foot top loaded antenna. In this case, the longer length will outstrip the benefits of having a top load. Beware the words "more efficient". In this hobby those words seem to mean 'more efficient but not so much that you will ever notice the...

This statement is objectively true. Your not even considering the materials the different antennas are made out of and what they can and cannot handle. As I said above, if the two antenna designs were made out of the same materials this would be true, but they are not. If you don't take...

I guess you somehow think that I don't already know this... Or is it that you want to distract from the truth of the matter again? I would look at it differently, but it doesn't matter. Even with your interpretation, my statement above still stands. You are leaving certain very important...

@freecell your argument here is moot. Less wind loading does not imply more durability. They are talking about durability problems, not wind loading problems. With what they have to make quads from, namely not conductive components for the support arms, they tend to be weaker. This means...

The first question is, what version RigExpert do you have. The AA-55 Zoom and up you don't need to worry about coax length as it is possible to calibrate out the effects of the coax, there are instructions for this in the manual, look in the table of contents for the word "Calibration". If...

In the stickies above the general thread, there is a thread called "Antenna Theory". I suggest posting this in there. The DB

In my browser the link is only "http://www.w3pga.org/Antenna" not the full intended link. Opening it in a new tab doesn't change this. Yea, you actually have to use scissors and glue... The DB

I think it is a stretch to call it "non-technical", given the very low bar that some people consider what is and isn't "technical", and I think this is a tough concept for many to wrap their heads around, but it is correct. I would also direct you to chapter 5 of the freely available "Another...

Wow, another distraction... Do you really think someone like me would make the mistake of putting said radials below this point? Actually, I put them slightly higher than this point as a buffer, and to account for things like radial diameter. Yet still, according to every resource, including...

Perhaps I should come at this a different way... A note, S-N ground, or Sommerfeld-Norton ground is what nec2 calls "Real Ground". It is by far the newest and most accurate ground system out there by any measure and standard, and this has been confirmed in real world tests. Long story...

Loss resistance specifically, no. Radiation efficiency, however, yes, and this does change as you add radials. I have found the document in question... I'll link it here. https://apps.dtic.mil/sti/pdfs/ADA332891.pdf Its not a bad document, but irrelevant to the conversation at hand. After...

The MiniNec ground I was referring to is the one that is implemented as a ground type in Nec2. This is the version of MiniNec ground for the latest version of MiniNec. There are many problems with this ground type as to fit in the basic program on the types of PC's it was intended to run on...

@HomerBB Yep, thats the one, although I remember one or two bits of other info as well that I thought was included, perhaps they were in later posts in that thread or in another thread or on another forum even? I'm pretty sure they were posted in relation to that post... Anyway, I think that...

Thanks for looking, but this isn't it. This appears to be from before the post I was referring to. At the time you were also posting more on other forums, it may have been one of those I remembered as I have/had accounts on other forums as well... Unfortunately this only makes it more...

This is true, but also incomplete. This is actually more of a special case than the whole story on resonance, but on the CB band so many antennas use this special case that many people think that this is all there is. For example, take any (well most) 5/8 wavelength antennas. A lot of people...

The antenna tuner and a matching circuit at the antenna feed point does the exact same thing in the exact same way, often with the exact same type of circuit. They take the reactance at the antennas feed point and feed it with and equal amount of the opposite reactance. This is, by definition...

I tried to confirm this through modeling, intentionally removing other losses from the model. For example, I used free space to eliminate ground losses, I used perfect conductors to remove losses from materials. The results were... inconclusive. I can say at least that this part of what you...